Abstract
A VERY remarkable red-water phenomenon is at present observable in a small pond in Broad Oak Park, Worsley, near Manchester, just in front of the seventh tee on the golf course. The surface of the pond—at any rate at times—is covered in places with an almost blood-red scum, which seems to float on the surface film like fine dust. The scum sometimes assumes a greenish hue. Microscopical examination shows that it is due to the presence of immense numbers of a large species of Euglena, the green chlorophyll of which, as in the case of Hmatococcus, is more or less replaced by red hmatochrome.
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DENDY, A. A Red-water Phenomenon due to Euglena. Nature 91, 582 (1913). https://doi.org/10.1038/091582b0
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DOI: https://doi.org/10.1038/091582b0
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