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On Photo-Chemical Processes in the Retina

1877; Nature Portfolio; Volume: 15; Issue: 387 Linguagem: Inglês

10.1038/015477a0

1476-4687

Arthur Gamgee,

Photoreceptor and optogenetics research

IN an article which lately appeared in NATURE (vol. xv., p. 308), I gave an account of certain very remarkable discoveries made by Prof. Kühne, of Heidelberg, which added additional interest to the startling announcement contained in a recent communication made by Prof. Boll, of Rome, to the Berlin Academy, to wit, that the external layer of the retina is, during life,- of a purple colour, which disappears at death, but which is, during life, continually being bleached by the action of light. In my first communication I stated that the account of Boll's researches which I was able to give, was only quoted at second-hand from Kühne's paper, as the number of the Proceedings of the Berlin Academy containing Boll's communication1 had not yet reached Manchester. Having now had the opportunity of reading that communication, I am able to state that the summary of it contained in my first article was correct in every particular. As the paper is, however, one of peculiar importance I propose, with the concurrence of the Editor of NATURE, to insert a verbatim translation of it in next week's number of NATURE.