Some details of improvements in the calotype method.
Some details of improvements in the calotype method.
Sends JH sample of chemicals and paper to make calotype himself.
Has read WT's paper before the R.S.L. and now complains they will not print it in the R.S.P.T. as they understand it has appeared elsewhere.
Reports on paper by Samuel Brown to the Royal Society of Edinburgh on the conversion of carbon to silicon, and other transmutations. Reports on discovery of new element, ozone, and complains further about R.S.L. Council.
Expresses reservations about Samuel Brown's work. Apologizes for delay in trying calotype; has done only some vegetable substance trials.
Agrees to meet JH and Edward Sabine on Saturday. Kew Observatory was given to R.S.L., but R.S.L. has not yet taken possession of it. [JH annotation: election of General Morrison to R.S.L.]
Magnetic observatory is still not operational one year after FW's arrival. Thomas Maclear is now in 'Zwartsland' [Zwartkops?]. FW shares quarters with C. P. Smyth and William Mann. Hopes to begin observations next week at Cape Town and Simon's Bay; G. G. Lewis will make observations at Grahamstown. Problems with meteorological instruments. Proposes magnetic survey of entire colony. [JH annotation: Enquire what FW meant about measurement conversions, malfunctioning needle, and broken tube in 19 Feb. 1841 letter to Humphrey Lloyd.]
M. F. B. Dausse visited FW several times to study instruments and copy meteorological observations. Dausse urged FW to share these with D. F. J. Arago, who is concerned at delay in publishing survey results. Please notify R.S.L. that Arago's official request will arrive soon. Encloses copy of FW's 15 Apr. 1841 letter to Arago. New rain gauge. Problems with anemometer and dipping needle. Will visit Cape Agulhas with Thomas Maclear to make magnetic observations.
Grateful for kind reception that JH gave to GM's son, who attended Exhibition to demonstrate GM's telescopes.
Asks whether JH will be prepared to present the committee report on N. L. Lacaille's stars at the B.A.A.S. meeting on 29 July.
Asks whether JH will be prepared to give the committee report on systems of simultaneous magnetical and meteorological observations at the B.A.A.S. meeting on 29 July.
JH, G. B. Airy, and Thomas Henderson are appointed to oversee the publication of the reductions of the calculations of N. L. Lacaille's stars. They will have £105 at their disposal.
JH, William Whewell, George Peacock, Humphrey Lloyd, and Edward Sabine are appointed by the B.A.A.S. to study systems of simultaneous magnetical and meteorological observations. They will be granted £100.
Outlines suggestions from [Drinkwater-]Bethune for improving 'Report of Standards.' Bethune distinguished Exchequer, Local, and Parliamentary (or National) standards, and preserved unit called 'land chain' equal to twenty yards.
List of papers JH took from CLH on his 'last visit' to [Hanover]. Miscellaneous notes about relatives and acquaintances.
Requests JH's opinion on five specific points in 'Report on Standards.'
Sends JH a copy of Thomas Maclear's base measurements, and will transmit JH's letter to Maclear.
Argues that John Hind is sick from too much observing, and should be given funds to take an extended vacation.
Apologizes for illness preventing him from coming to Collingwood; comments on the South African political picture, and AS's intention to retire.
A notice of meeting of the Standards Commission.