INDEX 



567 



Rat. Studies on Inbreeding. II. The effects 

 of inbreeding on the fertility and on the 

 constitutional vigor of the albino 335 



Rats. On several effects of feeding small 

 quantitiesof Sudan III to young albino. . . 101 



Reactions and nictaliolisiii in .\Iay-fly nymphs. 

 I. Reversals lO pliototaxis and the resist- 

 ance to pot:issiiiii] cNanide. II. Rever- 

 sals of phototaxis and carbon dioxide pro- 

 duction. Light 423 



Redfield, Alfred C. The physiology of the 

 melanophores of the horned toad Phryno- 

 soma 275 



Regeneration of Tubularia supported by facts? 

 Is the theory of axial gradient in the 265 



Relative effectiveness of food, oxygen, and 

 other substances in causing or preventing 

 male-production in Hydatina 521 



Resistance to potassium cyanide. II. Re- 

 versals of phototaxis and carbon dioxide 

 production. Light reactions and metab- 

 olism in May-fly nymphs. I. Reversals 

 of phototaxis and the 423 



Reversion in orientation to light in the colonial 

 form, Spondylomorum quaternarium. 

 Effects of chemicals on 503 



Rich, Arnold, .^nd Kepner, Willi.\m A. 

 Reactions of the proboscis of Planaria 

 albissima Vejdovsky 83 



Riddle, Osc.\r. A demonstration of the 

 origin of two pairs of female identical twins 

 from two ova of high storage metabolism . . 227 



Rubj'-eyed dilute gray, a third allelomorph in 

 theAlbinoseriesof therat 55 



SECRETIONS of Arbacia and Asterias. 

 Studies on the physiological significance 

 of certain precipitates from the egg 459 



Shull, a. Fr.\xklin. Relative effectiveness 

 of food, oxygen, and other substances in 

 causing or preventing male-production in 

 Hydatina 521 



Significance of certain precipitates from the 

 egg secretions of Arbacia and Asterias. 

 Studies on the physiological 459 



Smith, E. A..\n-d Guyer, M. F. Studies on 

 cytolysins. I. Some prenatal effects of 

 lens antibodies 65 



Spondylomorum quaternarium. Effects of 

 chemicals on reversion in orientation to 

 light in the colonial form 503 



Stein, E. R., Jr., and Atlee, W.C. Light reac- 

 tions and metabolism in May-fly nymphs. 

 I. Reversals of phototaxis and the resist- 

 ance to potassium cyanide. II. Reversals 

 of phototaxis and carbon dioxide pro- 

 duction 423 



(Stichopus) . The amount of bottom material 

 ingested by holothurians 379 



Stockard, Charles R., and Papanico- 

 laou, George N. Furtherstudieson the 

 modification of the germ-cells in mammals : 

 The effect of alcohol on treated guinea- 

 pigs and their descendants 119 



Sudan III to young albino rats. On several 

 effects of feeding small quantities of 101 



TISSUE culture. Contribution to the 

 study of epithelial movement. The 



corneal epithelium of thefrogin 545 



Toad Phrynosoma. The physiology of the 



melanophores of the horned 275 



Tubularia supported by facts? Is the theory 



of axial gradient in the regeneration of 265 



Twins from two ova of high storage metab- 

 olism. A demonstration of the origin of 

 two pairs of female identical 227 



VARIABILITY in the body weight of the 

 albino rat. Studies on inbreeding. I. 

 The effects of inbreeding on the growth 



and 1 



Vejdovsky. Reactions of the proboscis of 



Planaria albissima 83 



Vigor of the albino rat. Studies on inbreed- 

 ing. II. The effects of inbreeding on the 

 fertility and on the constitutional 335 



WEIGHT of the albino rat. Studies on 

 inbreeding. I. The effects in inbreed- 

 ing on the growth and variability in 



the body 1 



Whiting, P. W., and King, Helen Dean. 

 Ruby-eyed dilute gray, a third allelo- 

 morph in the Albino series of the rat 55 



Woodward, Alvalyn E. Studies on the 

 physiological significance of certain pre- 

 cipitates from the egg secretions of Ar- 

 bacia and Asterias 459 



