Received a 5-ft. Newtonian reflector from JH's aunt Caroline; is offering it to the R.A.S. JH is on the verge of moving to Collingwood.
Showing 101–120 of 146 items
Received a 5-ft. Newtonian reflector from JH's aunt Caroline; is offering it to the R.A.S. JH is on the verge of moving to Collingwood.
Would FB deputize for him at the council meeting on Friday as he is unable to attend. Letter from F. W. Bessel regarding 61 Cygni. Has written to G. B. Airy regarding Thomas Maclear's paper.
Invitation to Hawkhurst. Has plenty of R.S.L. work to keep him from his observational work. Question of a new observatory. Has had letter from Wilhelm Struve regarding the fifteen-inch object glass.
Encloses observations on a comet by Carl Bremiker for the next meeting of the R.A.S. Will be unable to attend many of the meetings for this session. F. W. Bessel has lost his only son. C. F. Gauss's researches into the motion of the sun.
Regarding the award of the Royal Medal of the R.S.L. Is unable to come to town. Regarding the appointment of visitors to the Royal Observatory. Is preparing a paper on celestial reform.
Regarding the arrangement of the constellations.
Giving news of his own recent work on the grouping of the constellations.
Organizational matters relating to sending two vessels on an Antarctic expedition.
Thanks AD for a correction in one of JH's writings; tries to explain the partial echo that occurs when blowing across the end of an open pipe.
Gratified by WW's volume. Recalls JH's catenary theorems. Writes function to complete theory of exponential transcendents. WW's applications have greater practical bearing than JH's early efforts, which JH now finds difficult to decipher. Sorry that WW declared Mr. Gilbert's tables defective.
Announces King's enrollment as patron of R.A.S. Recalls Danish monarches who promoted astronomy. Praises Altona observatory and work of H. C. Schumacher.
Just moved [to Collingwood]. Will send information about ED's late son, Thomas Drummond. Recalls Drummond's fame and triangulation work on Irish Survey. Describes invention and first demonstration of Drummond Light.
How to reduce barometer observations and project them in curves. R.S.L. will provide table by H. C. Schumacher for this purpose. How to obtain 'law of decimal oscillations' for each station. WB's name will be affixed to results. JH needs receipt for observations, which belong to South African Literary and Philosophical Society.
L. A. J. Quetelet's observations follow centigrade thermometer and French meter. Latitude and longitude for five sites. Three sites are unknown to JH. Hopes WB completes [reduction of barometer observations] before B.A.A.S. meeting.
Advice on how to project barometric observations onto curves.
Conduct of GN [governor at Cape of Good Hope, 1837-43] toward Andries Stockenström was unimpeachable. Stockenström's letters to JH show favorable view of GN. GN was not responsible for Stockenström's removal.
WB's tables [of barometer observations] are beautifully executed. Will submit them to B.A.A.S. Notes dissimilarity of British and Irish data.
Sends barometer observations from Flushing series, Elias Loomis in U.S., and [J. S.] McCord in Montreal. Can WB prepare these before next B.A.A.S. meeting?
Returns WB's 'Curves,' which JH presented to B.A.A.S. Sends results of 1837-1838 [barometer] observations by Captain [Edward] Belcher along Pacific coast of North and Central America.
Lady [Pleasance] Smith conveyed Duke of Northumberland's interest in JH's color photographs. Encloses others, and explains use of light-sensitive juices of flowers to produce colors.