February 13th, 1877.
Dear Sir,—I like the 18 inch speculum, and I think it as good as it can be, and if the larger one is as good I shall be delighted with it.[1] It gives beautiful star images; I see Sirius as a brilliant dot, a glorious object without ray or flares of any kind. I never saw it so well before.
Yours truly,
(Signed.)
Mr. G. Calver.
Footnote:
[1] This alludes to the 37 inch, then under consideration; and I may now add that Mr. Common is perfectly satisfied with it, and “consider it a very fine mirror.”
(From the same Gentleman.)