RELATION OF lODIN TO THYROID 425 



LITERATURE CITED 



Allen, B. M. 1918 The results of thyroid removal in the larvae of Rana 

 pipiens. Jour. Exp. Zool., vol. 24, no. 3. 



GuDERNATSCH, J. F. 1914 Feeding experiments with tadpoles; a further con- 

 tribution to the knowledge of organs with internal secretions. Am. 

 Jour. Anat., vol. 15. 



1916 Studies on internal secretions. IV. Treatment of tadpoles 

 with thyroid . and thymus extracts. Reported at the thirty-third 

 session of the Am. Asso. of Anatomists. 



Morse, M. 1914 The effective principle in thyroid accelerating involution in 

 frog larvae. Jour. Biol. Chem., vol. 19, p. 421. 



1918 Factors involved in the atrophy of the organs of the larval 

 frog. Biol. Bull., vol. 34, no. 3. 



Swingle, W. W. 1918 The acceleration of metamorphosis in frog larvae by 

 thyroid feeding and the effects upon the alimentary tract and sex 

 glands. Jour. Exp. Zool., vol. 24, no. 3. 



1918 The effect of inanition upon the development of the germ cells 

 and germ glands of frog larvae. Jour. Exp. Zool., vol. 24, no. 3. 



