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19, Bloomsbury Street,
London. 16 Dec 1867
W. C.
Sir
I beg leave to inform you that your enlarging lens apparatus is now quite completed and I am only waiting for the opportunity of a little fine weather for the purpose of testing it at the Kew Observatory before sending it to you.
I am Sir
Yours Obediently
J.H. Dallmeyer
Revd P.A. Secchi
