No summary available.
No summary available.
No summary available.
No summary available.
No summary available.
Is desirous of procuring impressions of prismatic spectra from all parts of the globe. These should show the chemical influence of the solar rays. The B.A.A.S. may be able to help or Colonel Edward Sabine. Can JH use his influence?
Thanks JM for a copy of the Correspondence of the Late J. Watt. In commenting on it, JH discusses at some length the doctrine of phlogiston as it relates to the discovery of the composition of water.
Would be pleased to accommodate JH if he is attending the B.A.A.S. meeting.
Sending treatises on radiant heat for the R.S.L. and JH.
Sends a work for JH; would he also present the other copy to the R.S.L.
Thanks for sending his book on the Correspondence of James Watt. Hopes to give it the attention it deserves, but meanwhile comments on the water controversy of Henry Cavendish, Joseph Priestley, and James Watt.
Plans to send parcel to observatory at Cape of Good Hope; does JH have anything to include?
In response to a request, JH is not willing to part with any letters from his father, William, but will send one of William Herschel's notes to his sister, Caroline.
Glad JH is writing the meteorology. Collecting materials for charts of ocean. Forwards some of this to JH for comments.
Notes that actinometer observations prove faulty due to problem with instruments. Asks that WS notify Indian observatories to join others in terminating such observations until JH finds method of getting around problem.
Sympathizes with JH's feelings of regret over actinometer readings. Has procured a new thermometer and carried out experiments toward correction of actinometers.
The books are on their way [see GA's 1847-3-30].
Believes all actinometric measurements made are useless because they did not take into account the rate of expansion of the liquid, which is not constant.
Asks WS to take the chair at the next meeting of the R.A.S [probably concerning the Adams-Leverrier dispute].
Asks WS if possible to enclose a note by Francis Beaufort to John Russell concerning request for pension for Thomas Maclear. Lays aside double star observations; continues work on orbit equation.
W. S. Jacob sends Alpha Centauri observations to R.A.S.; uses JH's Cape Results as a guide to double stars.