EFFECT OF THYROID FEEDING. 287 



Riddle, O. 



'07 A Study of Fundamental Bars in Feathers. BIOL. BULL., XII., 165. 



'08 The Cause of Production of " Down " and Other Down-like Structures 



in the Plumage of Birds. BIOL. BULL., XIV., 163. 

 'o8a The Genesis of Fault-bars in Feathers and the Cause of Alternation of 



Light and Dark Fundamental Bars. BIOL. BULL., XIV., 328. 

 Strong, R. H. 



'02 A Case of Abnormal Plumage. BIOL. BULL., III., 289. 

 Torrey, H. B. 



'23 The Effect of Dissolved Thyroxin on the Division Rate of Paramecium. 



Abs. in An. Rec., XXVI., 367. 

 '24 The Depressant Action of Thyroxin on Cell Division. Abs. in An. Rec., 



XXIX., 100. 

 Torrey, H. B., and Horning, B. 



'22 Hen-feathering Induced in the Male Fowl by Feeding Thyroid. Proc. 



Soc. Exp. B. M., XIX., 275. 

 Torrey, H. B., Riddle, M. C., and Brodie, J. L. 



'25 Thyroxin as a Depressant of the Division Rate in Paramecium. J. Gen. 



Physiol., VII, 449. 

 Whitman, C. O. 



'19 Orthogenetic Evolution in Pigeons. Carn. Inst. Publ. 257, Vol. I. 



