SUBJECT AND AUTHOR INDEX 



ACTIVITIES and reactions of the tadpole 

 larva. Amaroucium pellucidum (Leidy) 

 formconstellatum (Verrill). I. The.... 239 



Activity. Studies on the dynamics of mor- 

 phogenesis and inheritance in experimen- 

 tal reproduction. X. Head-frequency in 

 Planaria dorotoccphala in relation to age, 

 nutrition and motor 403 



Age, nutrition and motor activity. Studies 

 on the dynamics of morphogenesis and in- 

 heritance in experimental reproduction. 

 X. Head-frequency in Planaria doroto- 

 cephala in relation to 403 



Albino rat. The effects of inanition in the 

 young upon the ultimate size of the body 

 and of tfie various organs in the 97 



Allen, Bennet M. The parathyroid glands 

 of thyroidless Bufo larvae 201 



Allen, Bennet M. Theresiiltsof earliest re- 

 moval o! the thymus glands in Rana pip- 

 iens tadpoles 189 



Amaroucium pellucidum (Leidy) form con- 

 stollatum (Verrill). I. The activities and 

 reactions of the tadpole larva 239 



Amblystoma. The transplantation of the 

 cerebral hemispheres of 159 



AmicTonucleate Oxytricha. II. The forma- 

 tion of double-animals or 'twins.' An ex- 

 perimental study of an 129 



Anuran embryos with spina bifida defect. 

 Asymmetrical regulation in 171 



Arcella. The relations between nuclear num- 

 ber, chromatin mass, ctyoplasmic mass, 

 and shell characteristics in four species of 

 the genus 1 



Arenaria after extraction . The reformation of 



the crystalline style in Mya 259 



Asymmetrical regulation in anuran embryos 

 with spina bifida defect 171 



B.4R gene of Drosophila melanogaster in- 

 volving further decrease in facet number 

 and increase in dominance. A change in 



the 293 



Bifida defect. Asymmetrical regulation in 



anuran embryos with spina 171 



Bristle inheritance in Drosophila. III. Cor- 

 relation 419 



Bufo larvae. The parathyroid glands of thy- 

 roidless 201 



Burr, H. Saxton. The transplantation of 

 the cerebral hemispheres of Amblystoma. 159 



CELL-DIVISION. I. The physical condi- 

 tions which determine the appearance 

 of the spindle in sea-urchin eggs. An ex- 

 perimental study of 211 



Cerebral hemispheres of Amblystoma. The 



transplantation of the 159 



Child, C. M. Studies on the dynamics of 

 morphogenesis and inheritance in experi- 

 mental reproduction. X. Head-fre- 

 quency in Planaria dorotoccphala in rela- 

 tion to age, nutrition, and motor activity. 403 



Chromatin mass, cytoplasmic mass, and shell 

 characteristics in four species of the genus 

 Arcella. The relations between nuclear 

 number 1 



Coloration in spring migration and sex recog- 

 nition in frogs. The role of voice and. .. . 325 



Constellatum (Verrill). I. The activities and 

 reactions of the tadpole larva. Amarou- 

 cium pellucidum (Leidy) form 239 



Correlation. Birstle inheritance in Drosophia. 



Correlation. Bristle inheritance in Droso- 

 phila. III. 419 



Crystalline style in Mya arenaria after extrac- 

 tion. The reformation of the 259 



CfMMiNS, Harold. The role of voice and 

 coloration in spring migration and sex rec- 

 ognition in frogs 325 



Cytoplasmic mass, and shell characteristics in 

 four species of the genus Arcella. The re- 

 lations between nuclear number, chroma- 

 tin mass 1 



DAWSON, J. A. An experimental study 

 of an amicronucleate Oxytricha. II. 

 The formation of double-animals or 

 'twins' 129 



Defect. Asymmetrical regulation in anuran 

 embryos with spina bifida 171 



Dominance. A change in the bar gene of Dro- 

 sophila melanogaster involving further 

 decrease in facet number and increase in. 293 



Dorotoccphala in relation to age, nutrition and 

 motor activity. Studies on the dynamics 

 of morphogenesis and inheritance in ex- 

 perimental reproduction. X. Head-fre- 

 quency in Planaria 403 



Double-animals or 'twins.' An experimental 

 study of an. amicronucleate Oxytricha. 

 II. The formation of 129 



Drosophila. III. Correlation. Bristle inher- 

 itance in 419 



Drosophila melanogaster involving further 

 decrease in facet number and increase in 

 dominance. A change in the bar gene of . 293 



Dynamics of morphogenesis and inheritance 

 in experimental reproduction. X. Head- 

 frequency in Planaria and dorotoccphala 

 in relation to age, nutrition, and motor ac- 

 tivity. Studies on the 403 



EDMONDSON, Charles Howard. The 

 reformation of the crystalline style in 



Mya arenaria after extraction 259 



Eggs. An experimentalstudy of cell-division. 

 I. The physical conditions which deter- 

 mine the appearance of the spindle in sea- 

 urchin 211 



Embryos withspina bifida defect. Asymmet- 

 rical regulation in anuran 171 



FACET number and increase in dominance. 

 A change in the bar gene of Drosophila 

 melanogaster involving further decrease 



in 293 



Frogs. The r61e of voice and coloration in 

 spring migration and sex recognition in. . 325 



509 



