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4. On the Physiological Action of Light. No. III

Published online by Cambridge University Press:  15 September 2014

James Dewar  and
John G. M'Kendrick
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Extract

Since the date of our last communication, we have continued our investigations, with the following results:–

1. The light from a beam of uncondensed moonlight, though of weak intensity, and almost entirely free from heat rays, is still sufficient to alter the electro-motive power of the nerve and retina.

2. We have examined the phenomenon in the eyes of the following animals:—(1.) The common newt (Triton aquaticus). (2.) The gold-fish (Cyprinus auratus). (3.) The rockling (Motella vulgaris). (4.) The stickleback (Gasterosteus trachurus). (5.) The common edible crab (Cancer pagurus). (6.) The swimming crab (Portunus puber). (7.) The spider crab (Hyas coarctatus). (8.) The hermit crab (Pagurus Bernhardus), and (9.) The lobster (Homarus vulgaris).

Type
Proceedings 1872-73
Information
Proceedings of the Royal Society of Edinburgh , Volume 8 , 1875 , pp. 179 - 182
Copyright
Copyright © Royal Society of Edinburgh 1875

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