Abstract
IN NATURE of November 10 (p. 44), a contrivance is mentioned by the use of which the sea-water in a small aquarium can be kept in motion. The same kind of apparatus has been employed during the winter 1897–98 in Kiel, for keeping Peridinea and Diatoms of the Plankton in a healthy condition. Prof. Geo. Karsten has described the apparatus used in the Wissenschaft. Meeresuntersuch. der Kommiss. z. wissenschaft. Untersuch. d.deutsch. Meere in Kiel und der Biolog. Anstalt a. Helgoland, vol. iii. part 2, March 1898, p. 8. In this case a clinostat-clockwork was used, and the plunger rose five times in three minutes. The bell-jar, serving as an aquarium, was very small, holding about 1˙5 litre. Ceratium and Skeletonema got on very well, the same plants dying off rapidly on being kept in water at rest.
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DARBISHIRE, O. On Keeping Marine Organisms Alive in Small Aquaria. Nature 59, 78 (1898). https://doi.org/10.1038/059078a0
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DOI: https://doi.org/10.1038/059078a0
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