Agrees that some of JH's suggestions about meteor showers were probably unnecessary [see GA's 1848-1-29].
Showing 1–9 of 9 items
Agrees that some of JH's suggestions about meteor showers were probably unnecessary [see GA's 1848-1-29].
Surprised by GA's unhappiness with George Merz [see GA's 1848-2-17]; suggests GA seek information from Thomas Maclear at the Cape, who is getting a new telescope from George Merz.
Is aware of T. J. Hussey's drawings [see GA's 1848-2-1]; needs information about P. A. Hansen's lunar theory for an appreciation JH is to provide.
Regarding spots on the sun and [T. J.?] Hussey and [A.?] Dawson's observations.
Concerning P. A. Hansen's observations of Lunar irregularities.
Regarding the proposed eight-inch object glass. Supplementary estimate for the Admiralty. Extract of a letter from Otto Struve.
Regarding modifications for the actinometer. Has written to Georg Merz regarding the object-glass. Regarding the eight-inch object-glass. Name of the maker of his actinometer. [JH has written a rough draft of his reply to this letter on the same sheet.]
Georg Merz's practice regarding the sale of object-glasses. Is preparing a model of a transit circle.
JH comments on quality of Georg Merz object glasses.