510 



INDEX 



GENE of Drosophila melanogaster involv- 

 ing further decrease in facet number 

 and increase in dominance. A change 



in the bar 293 



Geographical variation and Mendelian inheri- 

 tance 369 



Glands in Rana pipiens tadpoles. The results 



of earliest removal of the thymus 189 



Glands of thyroidless Bufo larvae. The para- 

 thyroid 201 



Grave, Caswell. Amaroucium pellucidum 

 (Leidy) form constellatum (Verrill). I. 

 The activities and reactions of the tadpole 

 larva 239 



HEAD-FREQUENCY in Planaria doroto- 

 cephala in relation to age, nutrition, and 

 motor activity. Ptudieson the dynam- 

 ics of morphogenesis and inheritance in 



experimental reproduction. X 403 



Hegner, Robert W. The relations between 

 nuclear number, chromatin mass, cyto- 

 plasmic mass, and shell characteristics in 



four species of the genus Arcella 1 



Heilbrunn, L. v. An experimental study of 

 cell-division. I. The physical conditions 

 which determine the appearance of the 



spindle in sea-urchin eggs 211 



Hemispheres of Amblystoma. The trans- 

 plantation of the cerebral 159 



Hooker, Henry D., Jr., Laurens, Henry, 

 AND. Studies on the relative physiologi- 

 ea' value of spectral lights. II. The sensi- 

 bility of Volvox to wave-lengths of equal 



energy content 345 



Hydrogen ion concentration and oxygen con- 

 tent of water upon regeneration and me- 

 tabolism of tadpoles. The effects of 461 



INHERITANCE. Geographic variation 

 and Mendelian 369 



Inheritance in Drosophila. III. Correlation. 

 Bristle. 419 



Inheritance in experimental reproduction. 

 X. Head-frequency in Planaria dorotoce- 

 phala in relation to age, nutrition, and 

 motor activity. Studies on the dynamics 

 of morphogenes is and 403 



Inanition in the young upon the ultimate size 

 of the body and of the various organs in 

 the albino rat. The effects pf 97 



Ion concentration and oxygen content of water 

 upon regeneration and metabolism of tad- 

 poles. The effects of hydrogen 461 



JACKSON, C. M., AND Stewart, C. A. 

 The effects of inanition in the young upon 

 the ultimate size of the body and of the 



various organs in the albino rat 97 



Jewell, Minna E. The effects of hydrogen 

 ion concentration and oxygen content of 

 water upon regeneration and metabolism 

 of tadpoles 461 



LARVA. Amaroucium pellucidum (Leidy) 

 form constellatum (Verrill) . I. The ac- 

 tivities and reactions of the tadpole. . . . 239 

 Larvae. The parathyroid glands of thyroid- 

 less Bufo 201 



Laurens, Henrt, and Hooker, Henry D., 

 Jr. Studies on the relative physiological 

 value of spectral lights. II. The sensi- 

 bility of Volvox to wave-lengths of equal 



energy content 345 



Lights. II. The sensibility of Volvox to 

 wave-lengths of equal energy content. 

 Studies on the relative physiological value 

 of spectral 345 



MacDOWELL, Edwin Carleton. Bristle 

 inheritance in Drosophila. III. Cor- 

 relation 4 19 



Markham, Blackwell, Wilson, H. V., and 

 Asymmetrical regulation in anuian em- 

 bryos with spina bifida defect. 171 



Melanogaster involving further decrease in 

 facet number and increase in dominance. 

 A change in the bar gene of Drosophila 293 



Mendelian inheritance. Geographic variation 

 and 36 I 



Metabolism of tadpoles. The effects of hy- 

 drogen ion concentration and oxygen con- 

 tent of water upon regeneration and .... 461 



Migration and sex recognition in frogs. The 

 role of voice and coloration in spring 325 



Morphogenesis and inheritance in experimen- 

 tal reproduction. X. Head-frequency in 

 Planaria dorotocephala in relation to age, 

 nutrition, and motor activity. Studies 

 on the dynamics of 403 



Motor activity. Studies on the dynamics of 

 morphogenesis and inheritance in ex- 

 perimental reproduction. X. Head-fre- 

 quency in Planaria dorotocephala in re- 

 lation to age, nutrition and 403 



Mya arenaria after extraction. The reforma- 

 tion of the crystalline style in 259 



NUCLEAR number, chromatic mass, cyto- 

 plasmic mass, and shell characteristics 

 in four species of the genus Arcella. The 



relations between 1 



Number and increase in dominance. A 

 change in the bar gene of Drosophila me- 

 lanogaster involving further decrease in 



facet 293 



Nutrition and motor activity . Studies on the 

 dynamics of morphogenesis and inheri- 

 tance in experimental reproduction. X. 

 Head-frequency in Planaria dorotocephala 

 in relation to age 403 



OXYGEN content of water upon regener- 

 ation and metabolism of tadpoles. The 

 effects of hydrogen ion concentration 



and 461 



Oxytricha. II. The formation of double- 

 animals or 'twins.' An experimental 

 study of an aniicronucleate 129 



PARATHYROID glands of thyroidless 

 Bufo larvae. The 201 



Pellucidum (Leidy) form constellatum (Ver- 

 rill). I. The activities and reactions of 

 the tadpole larva. Amaroucium 239 



Pipiens tadpoles. The results of earliest re- 

 moval of the thymus glands in Rana. . . . 189 



Planaria dorotocephala in relation to age, nu- 

 trition, and motor activity. Studies on 

 the dynamics of morphogenesis and in- 

 heritance in experimental reproduction. 

 X. Head-frequency in 403 



RANA pipiens tadpoles. The results of 

 earliest removal of the thymus glands 

 in 189 



Rat. The effects of inanition in the young 

 upon the ultimate size of the body and of 

 the various organs in the albino 97 



Reactions of the tadpole larva. Amaroucium 

 pellucidum (Leidy) form constellatum 

 (Verrill) . I . The activities and 239 



Recognition in frogs. The r61e of voice and 

 coloration in spring migration and sex.. . . 325 



Reformation of the crystalline style in Mya 

 arenaria after extraction. The 259 



Regeneration and metabolism of tadpoles. 

 The effects of hydrogen ion concentration 

 and oxygen content of water upon 461 



