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Published online by Cambridge University Press: 31 May 2012
For a number of years, a line has been drawn between animals which merely live in water but obtain atmospheric air for respiration, and those truly aquatic forms which depend upon oxygen removed from solution in the water surrounding them. In making a study of the latter type of organisms, we recently noted that there are two distinct methods of respiration correlated with rate of blood circulation.
* —A paper read before the thirty-first ,annual meeting of the Entmological Society of America, at Atlantic City, N.J., Dec. 28, 1936. (Introduced by Prof. C. T. Brues).