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Biol Bull 75: 395-408. (December 1938)
© 1938 Marine Biological Laboratory
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THE OXYGEN-CONSUMPTION OF COLPIDIUM CAMPYLUM

ROBERT H. HALL 1

1 From the Department of Zoölogy, Columbia University, New York

A procedure has been described for obtaining accurate measurements of the rate of oxygen-consumption of Protozoa. This procedure involves the use of Warburg manometers and concentrated suspensions of organisms made up from bacteria-free cultures. The rate of oxygen-uptake by the holotrichous ciliate Colpidium campylum has been determined. The average of 36 measurements gave a value of 112.5 mm.3 Omacr2/hr./million for the rate at 19.8° C. in the medium in which the infusoria had been growing for 48 hours. The rate remained constant over a period of more than four hours. The standard deviation of the measurements was 0.0363.







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Copyright © 1938 by the Marine Biological Laboratory.