GATE - User contributions [en]

Page:ASC 1868 05 16 13-14.pdf/1

2022-06-14T11:14:03Z

Gregory Rashid:

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19, Bloomsbury Street,<lb/>
London. 16 May 1868<lb/>
W. C.<lb/>

Sir<lb/>
I have the pleasure to inform you that I have forwarded your eyepiece, and I enclose a paper, which will have to be produced on delivery of the box - <lb/>
I am, Sir,<lb/>
Your Obed Serv<lb/>
J.H. Dallmeyer<lb/>

Revd Father Secchi<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1866 08 09 10-45.pdf/1

2022-06-08T10:17:54Z

Gregory Rashid:

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<head>Royal Observatory, Greenwich</head>London S.E.<lb/>1866 August 9<lb/><head>My dear Sir</head>I was much gratified by your<lb/>
letter of August 1, partly because<lb/>it gave me an opportunity of showing<lb/>how highly I value the numerous<lb/>communications which I have received<lb/>from you.<lb/>I delivered your Spectrum of Arcturus<lb/>
to my First Assistant Mr. Stone, who<lb/>
is Secretary of the R. Astronomical Society.<lb/>
A No. of the Monthly Notices is usually<lb/>published in the decline of summer,<lb/>when, I doubt not, your paper<lb/>and diagram will appear.<lb/>And I made inquiry of Mr. De<lb/>La Rue about the Kew Photographs of<lb/>
the Sun. I enclose a full copy<lb/>
of his answer, which appears to
<pb/><noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1860 04 14 12-232.pdf/2

2022-06-08T08:51:12Z

Gregory Rashid:

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a short paper on the two highest latitudes reached by Spots the <unclear>winds</unclear> of which I can rely on, and finding the motions in long e at 45° and 50° remarkably retrograde, I have given a new talk in which is contained the figuration statement of what I believe<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1860 02 03 10-46.pdf/3

2022-06-08T08:47:31Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Lorenzo Mancini" /></noinclude>[[Category:ASC Proofread]]
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I have, for some time,<lb/>
been so much pressed with<lb/>
business, for the Government, in<lb/>
no way related to Astronomy,<lb/>
that I have not given so much<lb/>
attention to my proper subject<lb/>
as I could with. But I <lb/>
hope soon to be free from any<lb/>
load, and to direct my energies<lb/>
in their prefer channel.<lb/>
I am, my dear Sir,<lb/>
Yours very truly<lb/>
GBAiry<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1860 02 03 10-46.pdf/2

2022-06-08T08:43:13Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Lorenzo Mancini" /></noinclude>[[Category:ASC Proofread]]
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is the best account that I can <lb/>
give.<lb/>
Mr. <unclear>Hausell</unclear> received of the volume <lb/>
1857-1859 the following<lb/>
parts.<lb/>
Introduction<lb/>
Nos 3, 4, 6, 7, 8, 9<lb/>
(He has no other parts)<lb/>
The R. Observatory of Greenwich <lb/>
has, Vol. 1840-1841<lb/>
1843<lb/>
1850 <unclear>...</unclear> to 1857<lb/>
and, of volume 1857 to 1859,<lb/>
the following:<lb/>
Introduction<lb/>
Nos 3, 4, 6, 7, 8, 9.<lb/>
(no other parts)<lb/>
GB Airy has, of volume 1857-1859,<lb/>:
Introduction<lb/>
Nos 4, 7, 8, 9.<lb/>
(no other parts).<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1860 02 03 10-46.pdf/2

2022-06-08T08:37:59Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Lorenzo Mancini" /></noinclude>[[Category:ASC Proofread]]
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is the best account that I can <lb/>
give.<lb/>
M.r <unclear>Hausell</unclear> received of the volume <lb/>
1857-1859 the following<lb/>
parts.<lb/>
Introduction<lb/>
N.s 3, 4, 6, 7, 8, 9<lb/>
(<unclear>...</unclear> has no other parts)<lb/>
The R. Observatory of Greenwich <lb/>
has, Vol. 1840-1841<lb/>
1843<lb/>
1850 <unclear>...</unclear> to 1857<lb/>
and, of volume 1857 to 1859,<lb/>
the following:<lb/>
Introduction<lb/>
N.s 3, 4, 6, 7, 8, 9.<lb/>
(no other parts)<lb/>
GB Airy has, of volume 1857-1859,<lb/>
N.s 4, 7, 8, 9.<lb/>
(no other parts).<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1860 02 03 10-46.pdf/1

2022-06-08T08:36:37Z

Gregory Rashid:

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My dear Sir,<lb/>
in my absence from the <lb/>
Observatory, some packets of<lb/>
presses were received from you,<lb/>
and I am pretty obliged for <lb/>
those addressed to me and to the<lb/>
Observatory. M.r <unclear>Macin</unclear><lb/>
forwarded those which were<lb/>
addressed to other persons.<lb/>
Your packets have a request<lb/>
that we would inform you<lb/>
whether any preceding ones had<lb/>
not reached us. The following<lb/><noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1859 07 31 12-225.pdf/2

2022-05-25T10:30:26Z

Gregory Rashid:

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It is in consequence of this work having <lb/>
intervened that I have not previously <lb/>
replied to you. The specimen of<lb/>
your Solar records pleases me much<lb/>
and satifies me that for much of <lb/>
the preparation of a record, although <lb/> different obtained to my own, your work<lb/>
will prove sufficient. In return I<lb/>
send you a specimen of my ...<lb/>
... the observation of this day,<lb/>
... to my customary state which<lb/>
is recommended longer than your own.<lb/>
I send it to you in every state<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1859 07 31 12-225.pdf/1

2022-05-25T10:12:55Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>[[Category:ASC Not proofread]]
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Dear sir,<lb/>
The letter you wrote me on <lb/>
the 24th of June gave me the <lb/>
proudest gratification and by its <lb/>
intelligence relieved me of a load <lb/>
of anxiety refuting the Chronicles <lb/>
of this majority the Sun. Since its <lb/>
receipt I have been obliged to <lb/>
give a good deal of attention to <lb/>
the performances of a young gentleman <lb/>
whose services I have deemed for <lb/>
these weeks "only" to transcribe all<lb/>
the solar ... of ...<lb/>
(almost 720 <unclear>drawings</unclear>) to an increased<lb/>
state, from 90 millimeters to 12 inches.<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1858 02 02 12-226.pdf/4

2022-05-25T09:32:31Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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on Solar physics and terrestrial magnetism, can do me the great favour to try my method, and inform me if your arrangements would permit of your adding this class of observations to your others, at least for a time. According to my method, the observation, thrice repeated, commonly takes less than 12 minutes, exclusion of a <unclear>detail</unclear> of the forms of the spots, which requires 4 or 5 minutes more, so that coming in the day, and being practicable at any reasonable time of the middle of the day, it would not probably be found very exacting. I should be glad to hear about this from you at your convenience, and will only now add one hint which might not immediately strike you, namely that if the spots are numerous, or peculiarly situated, it is occasionally convenient to <unclear>observe</unclear> the <unclear>panorama</unclear> over the two series separately and alternately.<lb/>
Believe me to remain<lb/>
with great respect<lb/>
yours faithfully<lb/>
R.C. Carrington<lb/>
To Prof. Secchi<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1858 02 02 12-226.pdf/4

2022-05-25T09:29:19Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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on Solar physics and terrestrial magnetism, can do me the great favour to try my method, and inform me if your arrangements would permit of your adding this class of observations to your others, at least for a time. According to my method, the observation, thrice repeated, commonly takes less than 12 minutes, exclusion of a <unclear>detail</unclear> of the forms of the spots, which requires 4 or 5 minutes more, so that coming in the day, and being practicable at any reasonable time of the middle of the day, it would not probably be found very exacting. I should be glad to hear about this from you at your convenience, and will only now add one hint which might not immediately strike you, namely that if the spots are numerous, or peculiarly situated, it is occasionally convenient to <unclear>observe</unclear> the <unclear>panayer</unclear> over the two series separately and alternately.<lb/>
Believe me to remain<lb/>
with great respect<lb/>
yours faithfully<lb/>
R.C. Carrington<lb/>
To Prof. Secchi<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1856 12 18 10-42.pdf/2

2022-05-25T08:48:12Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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to present [[Name::Whewell, William|D. Whewell]] to you as a person worthy of your kindest attention. In extent and accuracy of knowledge he is scarcely equalled by any person living: - whether in matters of science, of literature, or of art. Though not a professional astronomer, he is well acquainted with our science, and is an Official Visitor of the Observatory of Cambridge as well as of that of Greenwich. You are<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1856 12 18 10-42.pdf/1

2022-05-25T08:44:44Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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My dear Sir,<lb/>
I learnt a day or two past that my friend [[Name::Whewell, William|D. Whewwll]], Master of Trinity College Cambridge, was about to make a journey to Rome; and I immediately gave him a short note of personal introduction to you.<lb/>
I write now to ask your permission<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1856 04 12 572-1.pdf/3

2022-05-25T08:26:05Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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the weight is compared with the National Standard Weight in air at the temperature 65°.66 F (18°.7 C), and under the barometric pressure 29.75 <hi rend="superscript">in</hi> (755.64 <hi rend="superscript">mm</hi>). In order to compare the weight <hi rend="underline">in vacue</hi>, it is necessary to bear in mind that the Specific Gravity of the National Standard Weight at 32°F (0°C), as compared with water at its greatest density, is 21.157, and that of the copy is 8.151.<lb/>
I am, dear Sir,<lb/>
Yours very faithfully<lb/>
GB Airy<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1856 04 12 572-1.pdf/2

2022-05-25T08:21:59Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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and to arrange for their deposit in the Collegio Romano or in any of the Academies of Rome, as may appear best adapted to them.<lb/>
The Standards are accompanied by a paper, inclosed in their Box, explaining the amount of their errors and other circumstances requiring attention in their use, and a duplicate of this paper was handed to the British Government to the forwarded in any other way.<lb/> I
have only to add to the contents of the paper that the error of the weight therein stated supposes that<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1856 04 12 572-1.pdf/1

2022-05-25T08:16:12Z

Gregory Rashid:

<noinclude><pagequality level="3" user="Irene Pedretti" /></noinclude>[[Category:ASC Proofread]]
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Dear Sir,<lb/>
I have to state to you that copies of the British Standards of Length and Weight, constructed with the greatest care and adapted to the most delicate purposes, were delivered some weeks past to the Foreign Office, to be forwarded to the Papal Government.<lb/>
Will you have the goodness to make inquiries for these,<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1853 09 08 13-51.pdf/3

2022-05-23T10:55:21Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>According to the commonly received ration of light in a Newtonian reflector and an automatic refractor, (which I believe to be very near the truth), the illuminating power of W. Lassell's 20-foot Newtonian of 24 inches in apertune is equal to that of a refractor of about 14 inches in aperture; which is <hi rend="underline">more than three times</hi> the illuminating power of your large refractor. These large refractors will therefore prove extremely efficient on nebula, and on parish Satellite, and the Milky Way or: but on the minute phenomena of a planetary surface they fail in comparison with refractors of far inferior size, in consequence of the inequalities of figure inseparable, I fear, from the system of <hi rend="underline">mechanical appropination</hi> employed in the process of figuring. Were it not for this source of imperfection, the large reflector of dead Rope, with its 6-foot diameter, might long ago have settled all questions respecting the small and close satellites of Uranus, the number of satellites attached to Neptune, the details of the phenomena on the surface of Saturn, so far. But, so far from this, it is a singular fact that we are not indebted to this enormous telescope for any <hi rend="underline">planetary</hi> discoveries whatever! - not even in satellites!!<lb/>
It is very gratifying to me to see that you are attending to the measurement of Double Stars. - I have observed but little this Spring, - my health having been far from good. In some instances, my measures of stars in your list (in No. of <hi rend="underline">Astr. Nachr.</hi>, in which are many very interesting things to which I have not now time to refer,) agree very closely with yours. Of γ <hi rend="underline">Virginis</hi> I obtained, 1855 '33 P = 171 '18; D = 3 "'362; on 4 nights, with a double-usage microm by <hi rend="underline">Amici</hi>. 1855 '46 P = 171 '17; D = 3 '308; on 5 nights, with with the parallel-wise micrometer. <lb/>
Of ε <hi rend="underline">Boötes</hi> I obtained the following<lb/>
1854 '52 P = 322 '99; D = 2 " '686; and on 3 nights, with parallel wise microm. 1855 '53 P = 323 '63; D = 2 '638; - 1 night, with double image micr. by <hi rend="underline">Amici</hi>. <lb/>
Like yourself, I have been much interested with the appearance of <hi rend="underline">Jupiter</hi>. The dark cap on the north pole is split up into <hi rend="underline">immeasurable</hi><noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1853 09 08 13-51.pdf/3

2022-05-23T10:23:45Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>According to the commonly received ration of light in a Newtonian reflector and an automatic refractor, (which I believe to be very near the truth), the illuminating power of W. Lassell's 20-foot Newtonian of 24 inches in apertune is equal to that of a refractor of about 14 inches in aperture; which is <hi rend="underline">more than three times</hi> the illuminating power of your large refractor. These large refractors will therefore prove extremely efficient on nebula, and on parish Satellite, and the Milky Way or: but on the minute phenomena of a planetary surface they fail in comparison with refractors of far inferior size, in consequence of the inequalities of figure inseparable, I fear, from the system of <hi rend="underline">mechanical appropination</hi> employed in the process of figuring. Were it not for this source of imperfection, the large reflector of dead Rope, with its 6-foot diameter, might long ago have settled all questions respecting the small and close satellites of Uranus, the number of satellites attached to Neptune, the details of the phenomena on the surface of Saturn, so far. But, so far from this, it is a singular fact that we are not indebted to this enormous telescope for any <hi rend="underline">planetary</hi> discoveries whatever! - not even in satellites!!<lb/>
It is very gratifying to me to see that you are attending to the measurement of Double Stars. - I have observed but little this Spring, - my health having been far from good. In some instances, my measures of stars in your list (in No. of <hi rend="underline">Astr. Nachr.</hi>, in which are many very interesting things to which I have not now time to refer,) agree very closely with yours. Of λ <hi rend="underline">Virginis</hi> I obtained, 1855 '33 P = 171 '18; D = 3 "'362; on 4 nights, with a double-usage microm by <hi rend="underline">Amici</hi>. 1855 '46 P = 171 '17; D = 3 '308; on 5 nights, with with the parallel-wise micrometer. <lb/>
Of ε <hi rend="underline">Boötes</hi> I obtained the following<lb/>
1854 '52 P = 322 '99; D = 2 " '686; and on 3 nights, with parallel wise microm. 1855 '53 P = 323 '63; D = 2 '638; - 1 night, with double image micr. by <hi rend="underline">Amici</hi>. <lb/>
Like yourself, I have been much interested with the appearance of <hi rend="underline">Jupiter</hi>. The dark cap on the north pole is split up into <hi rend="underline">immeasurable</hi><noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T10:19:59Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude><hi rend="underline">narrow stripes</hi>, differing in depth of colour; there has usually been one narrow interrupted streak remarkably lighter than the next, rather nearer to the southern edge of the cap than to the north pole. - Oh! for correct photographic pictures of these delicate phenomena! - Having unfortunately caught a very severe cold just before my return home, my eyes were affected with inflammation; and I find the light of Jupiter much too powerful for them at present; and consequently have been constrained to diminish my observations of him, and almost all other objects. <lb/>
In conclusion permit me again to thank you very warmly for your valuable letter, and to assure you that I shall always esteem it an honour and a pleasure to be favoured with your correspondence. - You have greatly the advantage of me in your excellent acquaintance with my language, while I with difficulty read yours; and indeed could not quite make out some of your quotations from your journal; but Mrs. Smyth (the accomplished wife of Admiral Smyth) whom I visited in my late journey, kindly deciphered and translated them for me.<lb/>
Believe me to remain,<lb/>
With high consideration,<lb/>
Very truly yours,<lb/>
W. R. Dawes<lb/>
To Professor A. Sacchi<lb/>
Rome<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1853 09 08 13-51.pdf/2

2022-05-23T09:51:05Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>distinctly was 357; and my subsequent observations led me to draw the perfect corrections of my impressions on Sept. 26. I perceive however that I entered in my journal on that night a brief note which I overlooked with preparing my observations for the Royal Astronomical Society, and the <hi rend="underline">Astronomical Nachrichten</hi>, referring to the <hi rend="underline">brighter line at the interior edge of B</hi>; viz. - "The <hi rend="underline">brighter line</hi> just at the interior edge of B is visible: it is very narrow." - This brighter line is well shown in the lithograph of my picture which accompanied my paper on Saturn in 1852, and appeared in No. 840 of the <hi rend="underline">Astronomical Nachrichten</hi>. It also appears in W. Lassell's picture on the same page; and it is mentioned by him in his more detailed account of his observations at Saturn printed in No. 922 of the <hi rend="underline">Astronomical Nachrichten</hi>; under date Dec. 6 (1852): but he had <hi rend="underline">previously to that date</hi> received from me a copy of my picture from which the lithograph was drawn; and in my accompanying letter I had drawn his attention to that point. - This fact he does not allude to in his description.<lb/>
The concentric bands of shading, of different degrees of darkness, on the surface of B, constitute a remarkable feature of that ring. - I just saw them distinctly on 26 Oct. 1851, and have detailed my observations in No. 793 of the <hi rend="underline">Astronomical Nachrichten</hi>, as well as in a paper which was sent to the R. A. S. and printed in the No. 1 (p. 12) of Vol xii of the <hi rend="underline">Monthly Notices</hi> under date Nov. 14, 1851. - See also the Monthly Notices for Nov. 12, 1852, p. 17, where, under date 1852, Sep. 20 and 25, I record observations of the <hi rend="underline">streaky</hi> shading on B, to the <hi rend="underline">brighter line</hi> at its interior edge. - W. Lassell also mentions these bands of shading in his observations at Malta on 29 Oct. 1852; but, as usual, does not refer to any previous observations of the phenomena, though he was fully aware of them. - It is remarkable that neither Hershel I nor Hershel II ever noticed these bands; - nor even [[Name::Friedrich Georg Wilhelm von Struve|Struve]] at [[Place::Tartu Observatoorium|Dorpat]] in 1826; but this negative evidence is of no great weight and cannot be deemed sufficient to prove that the phenomenon is <hi rend="underline">variable</hi>.<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T09:41:33Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>distinctly was 357; and my subsequent observations led me to draw the perfect corrections of my impressions on Sept. 26. I perceive however that I entered in my journal on that night a brief note which I overlooked with preparing my observations for the Royal Astronomical Society, and the <hi rend="underline">Astronomical Nachrichten</hi>, referring to the <hi rend="underline">brighter line at the interior edge of B</hi>; viz. - "The <hi rend="underline">brighter line</hi> just at the interior edge of B is visible: it is very narrow." - This brighter line is well shown in the lithograph of my picture which accompanied my paper on Saturn in 1852, and appeared in No. 840 of the <hi rend="underline">Astronomical Nachrichten</hi>. It also appears in W. Lassell's picture on the same page; and it is mentioned by him in his more detailed account of his observations at Saturn printed in No. 922 of the <hi rend="underline">Astronomical Nachrichten</hi>; under date Dec. 6 (1852): but he had <hi rend="underline">previously to that date</hi> received from me a copy of my picture from which the lithograph was drawn; and in my accompanying letter I had drawn his attention to that point. - This fact he does not allude to in his description.<lb/>
The concentric bands of shading, of different degrees of darkness, on the surface of B, constitute a remarkable feature of that ring. - I just saw them distinctly on 26 Oct. 1851, and have detailed my observations in No. 793 of the <hi rend="underline">Astronomical Nachrichten</hi>, as well as in a paper which was sent to the R. A. S. and printed in the No. 1 (p. 12) of Vol xii of the <hi rend="underline">Monthly Notices</hi> under date Nov. 14, 1851. - See also the Monthly Notices for Nov. 12, 1852, p. 17, where, under date 1852, Sep. 20 and 25, I record observations of the <hi rend="underline">streaky</hi> shading on B, to the <hi rend="underline">brighter line</hi> at its interior edge. - W. Lassell also mentions these bands of shading in his observations at Malta on 29 Oct. 1852; but, as usual, does not refer to any previous observations of the phenomena, though he was fully aware of them. - It is remarkable that neither Hershel I nor Hershel II ever noticed these bends; - nor even [[Name::Friedrich Georg Wilhelm von Struve|Struve]] at [[Place::Tartu Observatoorium|Dorpat]] in 1826; but this negative evidence is of no great weight and cannot be deemed sufficient to prove that the phenomenon is <hi rend="underline">variable</hi>.<noinclude><references/> {{TurnPage}}</noinclude>

Page:ASC 1853 09 08 13-51.pdf/2

2022-05-23T09:38:38Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>distinctly was 357; and my subsequent observations led me to draw the perfect corrections of my impressions on Sept. 26. I perceive however that I entered in my journal on that night a brief note which I overlooked with preparing my observations for the Royal Astronomical Society, and the <hi rend="underline">Astronomical Nachrichten</hi>, referring to the <hi rend="underline">brighter line at the interior edge of B</hi>; viz. - "The <hi rend="underline">brighter line</hi> just at the interior edge of B is visible: it is very narrow." - This brighter line is well shown in the lithograph of my picture which accompanied my paper on Saturn in 1852, and appeared in No. 840 of the <hi rend="underline">Astronomical Nachrichter</hi>. It also appears in W. Lassell's picture on the same page; and it is mentioned by him in his more detailed account of his observations at Saturn printed in No. 922 of the <hi rend="underline">Astronomical Nachrichter</hi>; under date Dec. 6 (1852): but he had <hi rend="underline">previously to that date</hi> received from me a copy of my picture from which the lithograph was drawn; and in my accompanying letter I had drawn his attention to that point. - This fact he does not allude to in his description.<lb/>
The concentric bands of shading, of different degrees of darkness, on the surface of B, constitute a remarkable feature of that ring. - I just saw them distinctly on 26 Oct. 1851, and have detailed my observations in No. 793 of the <hi rend="underline">Astronomical Nachrichter</hi>, as well as in a paper which was sent to the R. A. S. and printed in the No. 1 (p. 12) of Vol xii of the <hi rend="underline">Monthly Notices</hi> under date Nov. 14, 1851. - See also the Monthly Notices for Nov. 12, 1852, p. 17, where, under date 1852, Sep. 20 and 25, I record observations of the <hi rend="underline">streaky</hi> shading on B, to the <hi rend="underline">brighter line</hi> at its interior edge. - W. Lassell also mentions these bands of shading in his observations at Malta on 29 Oct. 1852; but, as usual, does not refer to any previous observations of the phenomena, though he was fully aware of them. - It is remarkable that neither Hershel I nor Hershel II ever noticed these bends; - nor even [[Name::Friedrich Georg Wilhelm von Struve|Struve]] at [[Place::Tartu Observatoorium|Dorpat]] in 1826; but this negative evidence is of no great weight and cannot be deemed sufficient to prove that the phenomenon is <hi rend="underline">variable</hi>.<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T09:35:22Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>distinctly was 357; and my subsequent observations led me to draw the perfect corrections of my impressions on Sept. 26. I perceive however that I entered in my journal on that night a brief note which I overlooked with preparing my observations for the Royal Astronomical Society, and the <hi rend="underline">Astronomical Nachrichter</hi>, referring to the <hi rend="underline">brighter line at the interior edge of B</hi>; viz. - "The <hi rend="underline">brighter line</hi> just at the interior edge of B is visible: it is very narrow." - This brighter line is well shown in the lithograph of my picture which accompanied my paper on Saturn in 1852, and appeared in No. 840 of the <hi rend="underline">Astronomical Nachrichter</hi>. It also appears in W. Lassell's picture on the same page; and it is mentioned by him in his more detailed account of his observations at Saturn printed in No. 922 of the <hi rend="underline">Astronomical Nachrichter</hi>; under date Dec. 6 (1852): but he had <hi rend="underline">previously to that date</hi> received from me a copy of my picture from which the lithograph was drawn; and in my accompanying letter I had drawn his attention to that point. - This fact he does not allude to in his description.<lb/>
The concentric bands of shading, of different degrees of darkness, on the surface of B, constitute a remarkable feature of that ring. - I just saw them distinctly on 26 Oct. 1851, and have detailed my observations in No. 793 of the <hi rend="underline">Astronomical Nachrichter</hi>, as well as in a paper which was sent to the R. A. S. and printed in the No. 1 (p. 12) of Vol xii of the <hi rend="underline">Monthly Notices</hi> under date Nov. 14, 1851. - See also the Monthly Notices for Nov. 12, 1852, p. 17, where, under date 1852, Sep. 20 and 25, I record observations of the <hi rend="underline">streaky</hi> shading on B, to the <hi rend="underline">brighter line</hi> at its interior edge. - W. Lassell also mentions these bands of shading in his observations at Malta on 29 Oct. 1852; but, as usual, does not refer to any previous observations of the phenomena, though he was fully aware of them. - It is remarkable that neither Hershel I nor Hershel II ever noticed these bends; - nor even [[Name::Friedrich Georg Wilhelm von Struve|Struve]] at [[Place::Tartu Observatoorium|Dorpat]] in 1826; but this negative evidence is of no great weight and cannot be deemed sufficient to prove that the phenomenon is <hi rend="underline">variable</hi>.<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T09:26:00Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>Dear Sir<lb/>
I have much pleasure in acknowledging the receipt of your very interesting letter, and return to you my sincere thanks for it. I began a reply to it more than a month ago, but was suddenly obliged to leave home, and I regret that, in consequence of illness since my return, I have been till now unable to resume my pen.<lb/>
I am very glad to learn that you were able to pay continued attention to Saturn throughout his last apparition. Your observations are extremely valuable, and will be thankfully received by our Astronomical Society. There can be no reasonable doubt of the great excellence of your large Munich Equatorial; and the observations you have made with it are evidently of great weight.<lb/>
I was not aware that you were paying so particular attention to the projection of the southern edge of the ball on to the rings, with a view to mark its exact place. - The only occasion when I judged it to be <hi rend="underline">quite clear</hi> of the division between A and B was on 26 Sept. 1854; and on that night I entered in my journal as follows: - "The division between A and B is seen to extend all 'round at both the north and south points of the ball, which does not seem to me to <hi rend="underline">encroach</hi> on it at all, though it certainly <hi rend="underline">touches</hi> it on the southern side. The diameter of the ball therefore from north to south appears to the exactly equal to the minor axis of the exterior edge of B." - This was evidently a careful observation: - but I have also recorded respecting the state of the air; "The air is not in a fine state; yet occasionally the views are sharp for several seconds together, though <hi rend="underline">considerable tremor is always present</hi>." - The highest power I was able to use with sufficient<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T09:20:04Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>Dear Sir<lb/>
I have much pleasure in acknowledging the receipt of your very interesting letter, and return to you my sincere thanks for it. I began a reply to it more than a month ago, but was suddenly obliged to leave home, and I regret that, in consequence of illness since my return, I have been till now unable to resume my pen.<lb/>
I am very glad to learn that you were able to pay continued attention to Saturn throughout his last apparition. Your observations are extremely valuable, and will be thankfully received by our Astronomical Society. There can be no reasonable doubt of the great excellence of your large Munich Equatorial; and the observations you have made with it are evidently of great weight.<lb/>
I was not aware that you were paying so particular attention to the projection of the southern edge of the ball on to the rings, with a view to mark its exact place. - The only occasion when I judged it to be <hi rend="underline">quite clear</hi> of the division between A and B was on 26 Sept. 1854; and on that night I entered in my journal as follows: - "The division between A and B is seen to extend all 'round at both the north and south points of the ball, which does not seem to me to <hi rend="underline">encroach</hi> on it at all, thought it certainly <hi rend="underline">touches</hi> it on the southern side. The diameter of the ball therefore from north to south appears to the exactly equal to the minor axis of the exterior edge of B." - This was evidently a careful observation: - but I have also recorded respecting the state of the air; "The air is not in a fine state; yet occasionally the views are sharp for several seconds together, though <hi rend="underline">considerable tremor is always present</hi>." - The highest power I was able to use with sufficient<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T09:00:39Z

Gregory Rashid:

<noinclude><pagequality level="1" user="Irene Pedretti" /></noinclude>Dear Sir<lb/>
I have much pleasure in acknowledging the receipt of your very interesting letter, and return to you my sincere thanks for it. I began a reply to it more than a month ago, but was suddenly obliged to leave home, and I regret that, in consequence of illness since my return, I have been till now unable to resume my pen.<lb/>
I am very glad to learn that you were able to pay continued attention to Saturn throughout his last apparition. Your observations are extremely valuable, and will be thankfully received by our Astronomical Society. There can be no reasonable doubt of the great excellence of your large Munich Equatorial; and the observations you have made it are evidently of great weight.<lb/>
I was not aware that you were paying so particular attention to the projection of the southern edge of the ball on to the rings, with a view to mark its exact place. - The only occasion when I judged it to be <hi rend="underline">quite clear</hi> of the division between A and B was on 26 Sept. 1854; and on that night I entered in my journal as follows: - "The division between A and B is seen to extend all 'round at both the north and south points of the ball, which does not seem to me to <hi rend="underline">encroach</hi> on it at all, thought it certainly <hi rend="underline">touches</hi> it on the southern side. The diameter of the ball therefore from north to south appears to the exactly equal to the minor axis of the exterior edge of B." - This was evidently a careful observation: - but I have also recorded respecting the state of the air; "The air is not in a fine state; yet occasionally the views are sharp for several seconds together, though <hi rend="underline">considerable tremor is always present</hi>." - The highest power I was able to use with sufficient<noinclude><references/> {{TurnPage}}</noinclude>

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2022-05-23T08:39:41Z

Gregory Rashid:

<noinclude><pagequality level="1" user="PedrettiWiki" /></noinclude>[[Category:ASC Proofread]]
[[Category:ASC Pages]]
[[Category:ASC Letters]]
My dear Sir<lb/>
Re the other leaf, I place a<lb/>
copy of the paper which was inserted in the Box<lb/>
containing the copies of the British Standards.<lb/>
I believe that you received my letter of April 12,<lb/>
containing some farther particulars relating to the<lb/>
Standard of Weight.<lb/>
In the meteorological papers, the term “Umidità”<lb/>
is used as a quantity expressible by a number,<lb/>
but it is not explained. Does it mean “the<lb/>
proportion of vapour actually in the air to the vapour<lb/>
required for complete saturation”?<lb/>
I believe that <gap/> the booksellers at Rome<lb/>
frequently have store of old books. Could you<lb/>
conveniently make inquiry for “Vita di Ansaldo<lb/>
Grimaldi, Napoli, 1769”? I am anxious to procure<lb/>
it if possible. I cannot give the name of the author.<lb/>

I am, my dear Sir, Yours very faithfully<lb/>
GB Airy
<pb/><noinclude><references/> {{TurnPage}}</noinclude>