Asks GA if he knows of any rules or pitfalls in calculating time from earlier times [even B.C.] to the present.
Asks GA if he knows of any rules or pitfalls in calculating time from earlier times [even B.C.] to the present.
Has little advice to offer JH about time calculation [see JH's 1849-3-29], except for fairly standard reminders.
Glad to hear that Margaret Louisa [JH's daughter] is coming to visit GA's family; could JH send along the key to the R.A.S. strong box?
Responds to GA's 1849-4-4, and sends the key.
Is making a case for JH's priority claims with regard to the means of determining double star orbits, in conflict with Yvon Villarceau.
A note about forwarding papers related to the double star question [see JH's 1849-4-9].
Extended comments about some of GA's statements in GA's abstract of Yvon Villarceau's papers on double stars [see GA's 1849-4-11].
Some responses to the question of copyright and of revision of articles prepared for the Encyclopaedia Metropolitana.
A note of thanks for a copy of JH's Outlines Astr.
Regarding the 'chilled' casting of a telescope.
Returning papers of Yvon Villarceau and an abstract of them, together with comments on them.
Informing JH that they have been appointed members of a committee for proving a three foot reflector for the Cape Town Observatory.
Responds to a JH question about the accuracy of the calculations for the figure of the earth in GA's article in the Encyclopaedia Metropolitana.
Is William Dawes equatorial telescope available for purchase?
JH's wife, Margaret, is writing to Mrs. Dawes and will ask about the telescope [see GA's 1849-10-23].