Letter from James Thomson Bottomley, regarding a paper 'Thermal radiation in absolute measure' by James Thomson Bottomley and J C Beattie Encloses remarks as requested by Mr Harrison. Requests deletion of some extraneous words. Responds some some of the criticisms. Notes that the other author, J C Beattie, is at the Cape of Good Hope, and is entitled to respond on his behalf. Subject: Physics and Chemistry [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 31 January 1899. 29 January 1900