138 W. W. SWINGLE 



Smith, P. E. 1916 The effect of hypophysectomy in the early embryo upon 

 the growth and development of the frog. Anat. Rec, vol. 11, p. 57. 

 1920 The pigmentary, growth and endocrine disturbances induced 

 in the anuran tadpole by the early ablation of the pars buccalis of the 

 hypophysis. Amer. Anat. Mem., no. 11. 



Spaeth, R. A. 1916 Evidence proving the melanophore to be a disguised type 

 of smooth muscle cell. Jour. Exp. Zool., vol. 20. 



Swingle, W. W. 1920 Homoplastic thyroid transplants. Anat. Rec, vol. 18, 

 pp. 263-264. 



1920 Homo- and heteroplastic endocrine transplants. Abstracts of 

 American Society of Zoologists, December, 1920, pp. 27-28. 



PLATE 1 



EXPLANATION OF FIGURES 



Microphotographs 



5 Contracted condition of subepidermal melanophores of normal larvae. 

 Surface view from whole mount of skin. X 700. 



6 Expanded melanophores giving the appearance of a reticulum. Surface 

 view from section cut on bias. X 700. 



