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treatment I have applied to every observation hitherto obtained, and with great satisfaction as regards its practical use, and I am now intending forthwith to discuss the data I have derived from several points of view, but mainly with references to distribution in the body of the Sun, and period of rotation of the centres of eruption, which I at least suspect may be different to that of the surface. Why I mention all this to you is principally because I foresee during this year some interruption to my observations from probable absences from home on foreign travel, and am anxious to provide against the break in the series which may unavoidably occur if I continue to be the only observer of this sort. And I want to ask if you, as having interested yourself in this inquiry, having an excellent climate, and a fixed observatory, and being impressed with the important bearing of the subject in question

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