The Journal of General Physiology
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The Journal of General Physiology, Vol 7, 599-602, Copyright © 1925 by The Rockefeller University Press

ARTICLE

HYDROGEN ION CONCENTRATIONS IN THE BLOOD OF INSECTS

R. W. Glaser 1

1 From the Department of Animal Pathology of The Rockefeller Institute for Medical Research, Princeton, N. J.

The range of pH values for the blood of grasshoppers and of houseflies is 7.2 to 7.6. The range of values for roaches is 7.5 to 8.0. The range for Malacosoma americanum is 6.4 to 7.4; and the range for Bombyx mori is 6.4 to 7.2. From the work of other investigators and from the writer's results, it is apparent that the pH of insect blood, in general, may vary between 6.4 and 8.0. In the forms observed no correlation exists between blood pH and age, nor between pH and metamorphosis.

Accepted on March 4, 1925


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