Concerning object-glasses.
Showing 21–40 of 73 items
Concerning object-glasses.
Concerning the new meridional instrument. Is JH coming to town soon?
Willing to let GA choose the best objective lens [see GA's 1848-4-5]; then JH offers another possibility; all are ill at Collingwood.
No summary available.
No summary available.
Regarding the reinstatement of the zenith tube.
Further information on the zenith tube. Description of a zenith tube.
Does not believe that GA's proposal [see GA's 1848-5-4] will work.
No summary available.
Apologizes for having questioned GA's proposal [see GA's 1848-5-6], which is very good and should work well.
No summary available.
No summary available.
Received proof pages of Admiralty Manual [see JH's 1848-2-2], and wants to add a paragraph on the zodiacal light [which GA attaches].
Regarding Mary Somerville's proposals for extraordinary terrestrial refractions—Admiralty Manual.
Agrees that no requests for additional observations should be made of Thomas Maclear; Admiralty Manual is about to be printed [see GA's 1848-7-15].
A note accompanying JH's copy of Admiralty Manual [see JH's 1848-7-15 or later].
Forwarding some misdirected proofs of ship's officers instructions to JH [see GA's 1848-7-17].
Asks JH for his opinion of F. W. A. Argelander's letter concerning the publication of his work by the R.A.S.
Wants more information about a Venus parallax expedition.
Forwards a letter about the Venus parallax expedition [see GA's 1848-9-21], and adds some comments.