AUTHOR AND SUBJECT INDEX 



1 BNORMALITIES occurring after conjuga- 



-^* tion in Paramecium caudatum. Variation 

 and inheritance of 387 



Adaptation to liigh temperatures, on the heat 

 resistance of Paramecium caudatum. The 

 effects of certain salts, and of 211 



Albino rats held at constant body-weight by un- 

 derfeeding for various periods. Changes in 

 the relative weights of the various parts, sys- 

 tems and organs of young 99 



Amphioxus during locomotion. The orientation 

 of 37 



Aphids. The predetermination of sex in phyl- 

 loxerans and 285 



Arey, Lesi IE B. The orientation of Amphioxus 

 during locomotion 37 



Ascaris. The effect of carbon dioxide on the 

 eggs of . 355 



As3xal reproduction of Hydra. Inheritance in 

 the 157 



<r>AR EYE' mutant of Drosophila. The ef- 

 -*-* feet of selection upon the 515 



Body-weight by underfeeding for various periods. 

 Changes in the relative weights of the various 

 parts, systems, and organs of young albino 

 rats held at constant 99 



Bridges, Calvin B. A linkage variation m Dro- 

 sophila 1 



Bristle inheritance in Drosophila. I. Extra bris- 

 tles. 61 



/-""ALKINS, Gary N. Didinium nasutum. I. 



^ The T ife history 225 



Carbon dioxide on the eggs of Ascaris. The ef- 

 fect of 355 



Caudatum. The effects of certain salts, and of 

 adaptation to high temperatures, on the heat 

 resistance of Paramecium 211 



Caudatum. Variation and inheritance of abnor- 

 malities occurring after conjugation in Para- 

 mecium 387 



Chamber a n, Mary Mitchell, Loeb, Jacque.s. 

 and. An attempt at a physico-chemical ex- 

 planation of certain groups of fluctuating 

 variation 559 



Chemical explanation of certain groups of fluc- 

 tuating variation. An attempt at a physico- 



559 



Curtis, Maynie R. and Pearl, Raymond. 

 Studies on the physiology of reproduction in 

 the domestic fowl. X. Further data on 

 somatic and genetic sterility. 45 



T ^ IDINIUM nasutum. I. The life history 225 



-*^ Dioxide on the eggs of Ascaris. The effect 

 of carbon 355 



Domestic fowl. X. Further data on somatic 

 and genetic sterility. Studies on the physi- 

 ology of reproduction in the 45 



Drosophila. A linkage variation in 1 



Drosophila. I. Extra bristles. Bristle inheri - 

 ance in 61 



Drosophila. The effect of selection upon the 

 'bar ej'e' mutant of 515 



Drosophila. The occurrence of lethal factors in 

 inbred and wild stocks of 531 



"P'GGS of Ascaris. The effect of carbon diox- 

 -'-' ide on the 355 



Eye' mutant of Drosophila. The effect of selec- 

 tion upon the 'bar 515 



TRACTORS in inbred and wild stocks of Droso- 

 -f_ phila. The occurrence of lethal 531 



Fishes in their natural environment to .«alts. 

 The reactions and resistance of 243 



Fission rate of Stylonyrhia pustulata. Heritable 

 variations and the results of selection in the 



451 

 Fluctuating variation. An attempt at a physico- 

 chemical explanation of certain groups of 5.59 

 Fowl. X. Further data on somatic and genetic 

 sterility. Studies on the physiology of re- 

 production in the domestic 45 



TTEAD length of spermatozoa in seven addition- 

 -'--* al species of insects. Variation in 505 



Heat resistance of Paramecium caudatum. The 

 effects of certain salts, and of adaptation to 

 high temperatures, on the 211 



Heliotropic reactions of animals and plants. The 

 relative efficiency of various parts of the 

 spectrum for the 23 



Hutchison, Robert H. The effects of certain 

 salts, and of adaptation to high temperatures, 

 on the heat resist nee of Paramecium cau- 

 datum 211 

 Hydra. Inheritance in the asexual reproduction 

 of 157 



T NBRED and wild stocks of Drosophila. The 

 * occurrence of lethal factors in 531 



Inheritance in Drosophila. I. Extra bristles. 

 Bristle 61 



Inheritance in the asexual reproduction of Hydra. 



157 

 Inheritance of abnormalities occurring after con- 

 .iugation in Paramecium caudatum. Varia- 

 tion and • 387 

 Insects. Variation in head length of spermatozoa 

 in seven additional species of 505 



TACKSON, C. M. Changes in the relative 

 '-' weights of the various parts, systems and or- 

 gans of young albino rats held at constant 

 body-weight by underfeeding for various 

 periods. 99 



L ASHLEY, K. S. Inheritance in the asexual 

 reproduction of Hydra. 157 



Length of spermatoz a in seven additional species 

 of insects. Variation in head 505 



Lethal factors in inbred and wild stocks of Droso- 

 phila. The occurrence of 531 



Life history. Didinium nasutum. I. The 225 



Linkage variation in Drosophila. A 1 



Locomotion. The orientation of Amphioxus 

 during 37 



Loeb, Jacques, and Chamberlain, Mary Mit- 

 chell. An attempt at a physico-chemical 

 explanation of certain groups of fluctuating 

 variation. 559 



Loeo, Jacc<ues, and Wa.steneys, Hardolph. 

 The relative efficiency of various parts of the 

 spectrum for the heliotropic reactions of ani- 

 mals and plants. 23 



569 



