SUBJECTS 



757 



Polarity : 



Morphological, physiological 

 basis of, in regeneration 

 (Loeb) 337, 687 



Protein : 



Digestion, by pepsin, effect of 

 acids (Northrop) 



607 

 Purification : 



Amphoteric colloids, signifi- 

 cance of isoelectric point 

 (Loeb) 237 



R 



Radium : 



Green plants in absence of 

 light, action on, of (Pack- 

 ard) 37 

 — — in presence of light, 

 action on, of (Packard) 



37 

 Ray: 



Fluorite, rate of recovery from 

 action of (Bovie and 

 Hughes) 323 



iS-ray: 



Temperature coefficient of ac- 

 tion upon egg of Nereis 

 (Redfield and Bright) 



255 

 Reaction : 



Planarians, reversal, by 

 strychnine, (Moore) 



97 

 Photogenic, reversibility of, in 

 Cypridina (Harvey) 



133 

 Starfish, reversal, by strych- 

 nine, (Moore) 97 

 Recovery : 



Fluorite rays, action of, rate 

 of recovery (Bovie and 

 Hughes) 323 



Reduction : 



Methylene blue, rate of, by 

 milk, relation of oxygen con- 

 centration (Harvey) 



415 



Regeneration : 



Bryophyllum calycimwi, stem 

 (Loeb) 81 



Physiological basis of morpho- 

 logical polarity (Loeb) 



337, 687 

 Respiration : 



(Brooks) 193 



(Gustafson) 181 



(Irwin) 209, 399 



(Osterhout) 171 



(Thomas) 203 



Aspergillus niger, effect of an- 

 esthetics (Gustafson) 



181 



Bacillus suMllis, effect of ether 

 (Brooks) 193 



Method of studying (Oster- 

 hout) 17 



Sciatic nerve of frog, rate in ac- 

 tivity (Moore) 613 



— — of frog, rate in rest 

 (Moore) 613 



Wheat, effect of ether 

 (Thomas) 203 



Response : 



Branchiae of Chromodoris, con- 

 trol of response to shading 

 (Crozier) 585 



Photic, of Mya arenaria, effect 

 of temperature on latent 

 period (Hecht) 667 



— , of Mya arenaria, latent 

 period (Hecht) 657 



Rest: 



Sciatic nerve of frog, respira- ^ 

 tory rate (Moore) 



613 

 Root: 



Marble etched by, in absence 

 of bacteria (Fred and Haas) 



631 



— , , in presence of bacteria 



(Fred and Haas) 631 



Rope: 



Bread control (Cohn, Wol- 

 BACH, Henderson, and 

 Cathcart) 221 



