𝔖 Bobbio Scriptorium
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The Hydrographic Department

✍ Scribed by TEMPLE, GEORGE T.


Book ID
109401782
Publisher
Nature Publishing Group
Year
1880
Tongue
English
Weight
281 KB
Volume
22
Category
Article
ISSN
0028-0836

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## With 3 figures. 1. Plankton Catcher. Though the disadvantages of nets for quantitative catches of planktic metazoa have long been agreed upon, they are still the only implements in general use. In freshwater and coastal waters the pump method is sometimes resorted to, but the inherent disadvant