620 



INDEX 



INHALATION of ethyl alcohol and certain 

 related substances. The experimental 

 modification of germ cells. II. The effect 



upon the domestic fowl of the daily 165 



Intoxications, upon the progeny. The experi- 

 mental modification of germ cells. III. 

 The effect of parental alcoholism, and cer- 

 tain other drug 241 



LAMELLIBRANCHS. The rhythmic 

 contractions in the mantle of 2.31 



Length of life of Tribolium confusum. The 

 effect of X-rays on the 573 



Life of Tribolium confusum. The effect of 

 X-rays on the length of 573 



Locomotion in actinians. Pedal Ill 



LoEB, Jacques and W.^sten'eys, H.\rdol'ph. 

 A re-examination of the applicability of 

 the Bunsen-Roscoe law to the phenomena 

 of animal heliotropism 187 



Lower organisms. The relation between spec- 

 tral color and stimulation in the 471 



MANTLE of lamellibranchs. The rhyth- 

 mic contractions in the 231 



MARSH.4.LL, Walter W. and Muller, Her- 

 mann J. The effect of long-continued 

 heterozygosis on a variable character in 

 Drosophila 457 



Mast, S. O. The relation between spectral 

 color and stimulation in the lower organ- 

 isms 471 



Media of different densities on the shape of 

 amoebae. The effect of 565 



Modification of germ cells. I. General plan 

 of exneriments with ethyl alcohol and 

 certain related substances. The experi- 

 mental 125 



Modification of germ cells. II. The effect 

 upon the domestic fowl of the daily inha- 

 lation of ethyl alcohol and certain related 

 substances. The experimental 165 



Modification of germ cells. III. The effect of 

 parental alcoholism, and certain other 

 drug intoxications, upon the progeny. 

 The experimental 241 



Morris, Marg.\ret. A cytological study of 

 artificial parthenogenesis in Cumingia. ... 1 



Movements of the tentacles in actinians. The 95 



Muller, Hermann J., Marshall, Walter 

 W. and. The effect of long-continued 

 heterozygosis on a variable character 

 in Drosophila 457 



"IWTERVOUS transmission in the actinians. . 87 



ORGANISMS. The relation between 

 spectral color and stimulation in the 

 lower 471 



PARAMAECIUM in pure cultures of bacte- 

 ria. The growth of 421 



Paramaecium. The effects of a thyroid diet 



upon 529 



Parker, G. H. Actinian behavior 193 



Parker, G. H. Nervous transmission in the 

 actinians 87 



Parker, G. H. Pedal locomotion in actini- 

 ans Ill 



Parker, G. II. The movements of the tenta- 

 cles in actinians 95 



Parthenogenesis in Cumingia. A cytological 

 study of artificial 1 



Pearl, Raymond. The experimental modi- 

 fication of germ cells. I. General plan of 

 experiments with ethyl alcohol and cer- 

 tain related substances 125 



'Pearl, Raymond. The experimental modi- 

 ficationof germ cells. II. The effect upon 

 the domestic fowl of the daily inhalation 

 of ethyl alcohol and certain related sub- 

 stances 1 65 



Pearl, Raymond. The experimental modi- 

 fication of germ cells. III. The effect of 

 parental alcoholism, and certain other 

 drug intoxications, upon the progeny. . 241 



Pedal locomotion in actinians Ill 



Progeny. The experimental modification of 

 germ cells. III. The effect of parental 

 alcoholism, and certain other drug intoxi- 

 cations, upon the 241 



Proteins. On the reations of ameba to iso- 

 lated and compound 53 



REACTIONS of ameba to isolated and 

 compound proteins. , On the 53 



Redfield, Eliz.^beth S. P. The rhythmic 

 contractions in the mantle of lamelli- 

 branchs 231 



Roscoe law to the phenomena of animal helio- 

 tropism. A re-examination of the ap- 

 plicability of the Bunsen- 187 



SCHAEFFER, A. A. On the reactions of 

 ameba to isolated and coinpound pro- 

 teins 53 



Sex. A further contribution to the theory of 593 



Shape of amebae. The effect of media of 

 different densities on the 565 



Shumway, Waldo. The effects of a thyroid 



diet upon Paramaecium 529 



Spectral color and stimulation in the lower or- 

 ganisms. The relation between 471 



Stimulation in the lower organisms. The 

 relation between spectral color and 471 



Structure and development of the eggs of 

 Crepidula. Effects of centrifugal force 

 on the 311 



TENTACLES in actinians. The move- 

 ments of the 95 



Theory of sex. A further contribution to the 593 

 Thyroid diet upon Paramaecium. The ef- 

 fects of a 529 



Transmission in the actinians. Nervous. ... 87 

 Tribolium confusum. The effect of X-rays 



on the length of life of 573 



w 



X 



ASTENEYS, Hardolph, Loeb, 

 Jacques and. A re-examination of 

 the applicability of the Bunsen-Roscoe 

 law to the phenomena of animal helio- 

 tropism 187 



•RAYS on the length of life of Tribolium 

 confusum. The effect of 573 



