37, Eaton Rise, Ealing,
February 3rd, 1877.
Dear Sir,—I have tried the 18 inch speculum on some tests, and especially the satellites of Uranus, and it appears fine, very fine. What I have done in photography promises well.
Yours truly,
(Signed.)
Mr. G. Calver.
From J. L. Lancaster, Esq.
Southend-on-Sea,
March 17th, 1877.