Praises old Edinburgh Philosophical Journal. Promises to send DB some materials for publication.
Showing 21–35 of 35 items
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.
Asks DB to sign a certificate for the candidature of William Ritchie for admission to R.S.L.
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).
Is pleased with Mr. Johnston's reply. Regarding a figure used by JH in his paper and its true significance. Is not certain yet whether to join the B.A.A.S.
Excusing JH for returning to Slough suddenly before leaving for Hanover.
Thanks for his letter regarding the dioptric lights. Gives his own views as to their importance.
Regarding DB's views on support for JH in the presidency of the R.S.L.
Sends an abstract of his paper on observations relating to the practical construction of telescopes [JH's 'Practical Rules,' 1822]. Would like 25 copies for distribution. His recent experiments with polarized light.
Regarding terminology for polarization and refraction of light. DB's statement concerning the experiments of E. L. Malus and light through crystals.
Sends JH's 1823 paper 'Absorption of Light by Coloured Media' to Royal Society of Edinburgh. Approves DB's illustration of polarized light in mineral apophyllite. Corrects DB's quotation from JH's letter regarding crystals observed on Mont Blanc.
Vol. 6 and 7 of F. W. Bessel's observations. Did DB receive JH's paper?
JH's theory of colors. Edward Troughton has DB's instrument one-third completed. When will DB want JH's encyclopedia article on 'Variation'?
Sends circular of F. W. Bessel's 'Declinations.' Sent paper on 25 July for Royal Society of Edinburgh, similar to DB's paper outlined in previous issue [of Edinburgh Journal of Science]. Argues for continuity of color spectrum versus 'per saltum' transitions.
Asks DB to write a paragraph explaining the novelty of the photographic process of '[Andrew?] Ross and [Thomas?] Thomson' as distinct from [Nicéphore] Niépce's albuminous process.