No summary available.
Showing 1–20 of 29 items
No summary available.
No summary available.
Encourages GA to consider favorably the offer of Hugh Percy [Duke of Northumberland] of donating a telescope to Cambridge Observatory.
Details about proposals for magnetic expeditions, as they are to be presented to British government [see GA's 1838-11-12]. Also included is a copy of the resolutions passed at a B.A.A.S. meeting on 25 Aug. 1828.
About JH's visit to Carl Friedrich Gauss, and Gauss's well-devised magnetic measuring instruments.
A note along with letters from R. A. Cauchoix, the telescope maker, and [J. C. Spencer,] Lord Althorp, about the B.A.A.S.; JH is trying to clean up observation reports before leaving for the Cape.
About the question of an astronomer for a vacant position at Kew Observatory.
Further about the telescope to be donated by Hugh Percy [see JH's 1833-8-15], along with a promise that JH will write to R. A. Cauchoix about the telescope.
George Everest-Thomas Jervis affair. Observations on the production of color by chemical rays.
More about arrangements with R. A. Cauchoix and the telescope for Cambridge Observatory; JH also comments on the state of his nebula work.
Has been asked to serve on a Standards Commission, to reestablish standards destroyed by the fire in the Houses of Parliament [1834]; is willing to serve.
Comments on the work of the Standards Commission, hoping that it will move quickly to a conclusion [see GA's 1838-11-14].
Replies to GA's request for meeting dates [see GA's 1838-11-14], and suggests ways to shorten the work of the commission [see JH's 1838-11-16].
Agrees to GA's suggested dates [see GA's 1838-11-20]; comments on several approaches to defining a standard of weight.
Describes the tests and adjustments JH has recommended to Thomas Maclear to try to remove anomalies from the functioning of the transit circle at the Royal Observatory, Cape of Good Hope; also comments on the beauty of some southern nebulae.
Congratulates GA on being honored by H. M. Government [GA was offered a knighthood, which he declined], and of being appointed Astronomer Royal, and further tells GA about some of JH's observations, and the instruments in use [letter finished 11 Oct.].
Thanks GA for all his efforts on Thomas Maclear's behalf [see GA's 1839-2-25]; comments on some developments in photography, including the work of Nicephore Niepce done in approximately 1826.
Sympathizes with GA in the family sorrow [deaths of GA's sons Arthur and George]; JH complains that house hunting, and other matters, are keeping him from important work.
About astronomical matters, such as parallax and variable stars.
Comments on GA's and Edward Sabine's work on the figure of the earth; describes some results JH obtained from using quartz for polarizing light, and is unhappy with the proposed recipient of the R.A.S. medal, M. C. T. Damoiseau, whose lunar theory JH cannot understand.