Letter | Published:

Researches on Animals Containing Chlorophyll


MR. PATRICK GEDDES appears to have been anticipated in most of the points set forth in his paper on Further Researches on Animals containing Chlorophyll, published in NATURE of January 26 last, by Dr. Brandt, of Berlin, who, in a paper read before the Physiological Society of Berlin on November 11 last, and published in the Proceedings of the Society on the “Symbiosis of Lower Animals with Algæ,” describes the cultivation, after removal from the bodies of the various animals affected by them, of the well-known yellow and green chlorophyll-containing bodies, their development of starch grains, and their successful artificial implantation into the bodies of fresh hosts previously free from them; this latter being an important fact apparently not known to Mr. Geddes. Dr. Brandt further names the species of algæ in question under two genera, Zoochlorella and Zooxanthella, and gives to the peculiar physiological relations of mutual advantage between the plants and animals the term “symbiosis” Mr. Geddes appears not to have seen this paper of Dr. Brandt, since he merely refers to some of his earlier papers on the same subject, but it is important. Dr. Brandt's claims in the matter should not pass without notice in NATURE. I have not seen Dr. Brandt's original paper, but only an abstract published in the Naturforscher of January 14 last, from which I take the information given above.

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