[Alexander] Strahan would like an article from JH on the [Great] Pyramid, but NM thinks that Piazzi Smyth is the man. All the same he would appreciate an article from JH, perhaps on a chemical theme.
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[Alexander] Strahan would like an article from JH on the [Great] Pyramid, but NM thinks that Piazzi Smyth is the man. All the same he would appreciate an article from JH, perhaps on a chemical theme.
Regarding the feasibility of a translation of Carl Ritter's geographical works. Will put the matter to the Council of the Royal Geographical Society and let JH know their views. The Russians were grateful for JH's help.
Thanks for JH's 'Catalogue of Nebulae.' Comments on the problems of accuracy in YV's meridian instrument due to fluctuating temperatures and other problems. Also refers to geodetic and trigonometric considerations.
Received JH's letter of 17 Nov. and full instructions from [Charles] Babbage. Will reply to solicitor of General Reversionary & Investment Company regarding Hollier Trust.
Encloses prints of specimens produced by WH's new lathe for manufacturing telescope specula. Asks JH's opinion of results.
Asks JH to be a shareholder in venture to publish new weekly scientific journal.
Is not 'at liberty' to speak of experiments on change of refrangibility of 'extra-red' rays. Discusses other experiments on extra-red regions, having used various prisms but not obtaining JH's results.
JT does not have 'luxury' of using sunshine; uses electric light. Perhaps this adds to inability to obtain heat spots [see JH's 1864-11-16].
Reads JH's earthquake article and believes the effects of the transferences of matter of which JH speaks must be very small. Discusses the dynamical theory of heat. Will send to JH volume WT is editing.
Praises JH's Iliad. Asks R.S.L. for funds to cover expenses incurred by spherical observations. Details information to be included in optical tables.
Compares W. L. Newman's and CP's calculations of optical coefficients to those in JH's work. Sends JH formulae and tables for calculating telescopic lens thickness and shape in relation to the dimensions of the telescope. Wishes JH luck on Iliad.
Compares JH's equation for lens curvature with that of C. F. Gauss.
Informing him that he has just heard of the death of Wilhelm Struve.
Sends his article on the sun and the British Almanac for 1865. Regarding various current theories relating to the sun. The professorship he applied for has not materialized.
Is grateful for his letter regarding the claim for the discovery of the hyposulfite fixing process.
Regarding the differences between portraits and photographs. Is sending him some magnesium for photographic purposes.
Encloses a letter from Angelo Secchi. Sent him a Herschelian eye piece and is having a prism prepared for him. Secchi has seen James Nasmyth's 'willow leaves.'
Photographic News received copies of papers from R.S.P.T. giving evidence of [JH's] use of hyposulfite of soda. Will refer to W. H. F. Talbot on use of bromine, as JH suggested. P. B. Goddard of Philadelphia claims to have used bromine in Daguerreotype process in 1839, but did not announce it publicly until 1843.
No summary available.
No summary available.