Copy letter from [Herbert Rix] to Dr Arthur Gamgee, Fellow of the Royal Society 'Dear Dr Gamgee, In answer to yr. [your] enquiry about Prof. [Professor Arthur Herbert] Church's paper on Turacoporphyrin we have looked thro' our volumes & find in Phil. Trans. ['Philosophical Transactions of the Royal Society'] A. 1892, p. 511, a paper by him entitled 'Researches on Turacin', &c. We think this may be the one you want. An abstract of it appeared at Proceedings ['Proceedings of the Royal Society'] vol. 51 p.399, which might perhaps contain all you want. You can consult the Proc. at the Soc. [Society] Vaudiese de Sci. [Science] Naturalles; we send them these. Yours faithfully'. 12 February 1896