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Journal of Experimental Biology 15,1-9 (1938)
Published by Company of Biologists 1938

The Clasping Reflex In Frogs And Toads And The Seasonal Variation In The Development Of The Brachial Musculature

C. L. SMITH PH.D.¹

¹ Department of Zoology, Liverpool University

By the methods described in this paper it has been shown that:

(1) A clasping action can be produced in male frogs at all times of the year.

(2) This reaction is peculiar to the male.

(3) The course of the decline and onset of the hypertrophy of the brachial musculature up to a maximum at the breeding period can be followed.

(4) This hypertrophy appears to follow fairly closely the changes occurring in the interstitial tissue of the testis.

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