178 L. J. COLE AND W. A. LIPPINCOTT. 



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NOTE. While the foregoing paper was in press there came to our attention a 

 paper by Albert Pezard on "Le conditionnement physiologique des characteres 

 sexuels secondaires chez les Oiseaux. Du role endocrine des glandes genitales," 

 Bull. Biol. de la France et' de la Belgique, T. 52, Fasc. i et 2, pp. 1-176. This 

 is a very interesting contribution to the literature of the genital glands in birds as 

 endocrine organs and has an extensive bibliography, mostly of foreign references. 



