No summary available.
No summary available.
Letter of introduction for the Prince de Cimitil, and Prince de Casiati, who are spending a few days in Cambridge.
Letter to [Edinburgh Philosophical] Journal calling attention to 1809 article by [Paul] Erman of Berlin, which some say anticipated JH's 1824 Bakerian lecture on 'Motions produced in fluid conductors when transmitting the Electric current.' JH compares both papers, admits Erman's priority on some theoretical points but claims originality for JH's experiments.
Arrangements for paying dues to the Royal Society of Edinburgh; some comments about light passing through crystals.
Clarifies areas of disagreement with DB in JH's explanation of the results of colored tints of light passing through polarizing crystals.
Thanks for the extract of his paper. Comments on this and his own discoveries on the polarization of light. His fees for the articles will pay his subscription to the Royal Society of Edinburgh.
Sending all his papers on the deviations of tints, suitably amended to give DB due acknowledgement. Queries regarding some of DB's statements. Supports his theories in a new paper he has written for the Cambridge Philosophical Society.
It has been a long time since he last heard from him. Very busy with professional pursuits. Congratulations on receiving the Copley medal. Would like an abstract of his article on aberrations in chromatic lenses. Comments on this.
Accompanies a paper JH was submitting to the Royal Society of Edinburgh. Discusses motion of light rays in Apophyllite and various optical writings of DB.
Has been unable to answer his letters due to the King's visit. Refrained from writing on hearing of the death of W. Herschel. His paper on the absorption of light will appear in the next number of the Transactions of the Royal Society of Edinburgh. Comments on this. Grateful for any astronomical news. Advice welcomed on memoir of W. Herschel.
Some comments on sun spots based on William Herschel's ideas; considering a collection of William Herschel's writings but publishers not interested.
Forwarding to DB, through Hans Christian Oersted, a paper on caloric by Marc Seguin.
Some comments on observations by Continental observers; matters related to sending books and papers.
Regarding the change of ownership and policy of the Edinburgh Philosophical Journal. Would like a paper from him for the first number. Marked 'Private.'
Praises old Edinburgh Philosophical Journal. Promises to send DB some materials for publication.
Has received copies of reprints from Lyell. Points out errors in a printed paper of his. Has been unwell and very busy of late. Would like to add DB's name to the Optical Glass Committee.
Regarding corrections requested by JH in a printed article. Ill health and overwork applies to him also. Pleased to hear of the work of the Optical Glass Committee. Comments on this.
Asks DB to sign a certificate for the candidature of William Ritchie for admission to R.S.L.
Would have answered his last letter sooner but has been confined to his house. Encloses specimen of calcareous spar. Has in the past carried out many experiments on this substance. Is he satisfied with a statement in the Optical Glass report? Missing Transactions for the library.
Sending DB a draft of a paper; comments on quality of a chromatic lens (that of [Charles] Tulley's telescope using Pierre Guinand's glass).