INDEX 



ABBOTT, Charles Hahlan. Reactions 

 of land isopods to light 193 



Acclimatization as a factor affecting the upper 

 thermal death points of organisms 427 



Adrenin on the pigment migration in the 

 melanophores of the skin and in the pig- 

 ment cells of the retina of the frog. The 

 effect of 391 



Anabiosis of the earthworm 57 



Association and color discrimination in mud- 

 minnows and sticklebacks 443 



Assortive mating in a nudibranch Chromo- 

 doris zebra Heilprin 247 



BIGNEY, Andrew Johnson. The effect of 

 adrenin on the pigment migration in the 

 melanophores of the skin and in the pig- 

 ment cells of the retina of the frog 391 



CALKINS, Gary N. Uroleptus mobilis, 

 Engelm. I. History of the nuclei dur- 

 ing division and conjugation 293 



Cells of the retina of the frog. The effect of 

 adrenin on the pigment migration in the 

 melanophores of the skin and in the pig- 

 ment 391 



Character and selection. Fluctuations in a 

 recessive Mendelian 157 



Chromodoris zebra Heilprin. Assortive mat- 

 ing in a nudibranch 247 



Collins, H. H. Studies of normal moult 

 and of artificially induced regeneration of 

 pelage in Peromyscus 73 



Color discrimination in mudminnows and 

 sticklebacks. Association and 443 



Comparison of the thyroid glands of iodin-fed 

 and normal frog larvte. Studies on the 

 relation of iodin to the thyroid. II 417 



Conjugation. Uroleptus mobilis, Engelm. 

 I. History of the nuclei during division 

 and 293 



Corneal epithelium. Demonstration of epi- 

 thelial movement by the use of vital 

 staining, with observations on phagocy- 

 tosis in the 37 



Chozier, W. J. Assortive mating in a nudi- 

 branch Chromodoris zebra Heilprin 247 



. On the use of the foot in some mollusks 359 



DEATH points of organisms. Acclimati- 

 zation as a factor affecting the upper 

 thermal 427 



Development in mice. Observations on the 

 relation between suckling and the rate of 

 embryonic 49 



Discrimination in mudminnows and stickle- 

 backs. Association and color 443 



Division and conjugation. Uroleptus mo- 

 bilis, Engelm. I. History of the nuclei 

 during 293 



Dyes), and to excretory toxins. The reac- 

 tion of Selachii to injections of various 

 non-toxio solutions and suspensions (in- 

 cluding vital 101 



T?ARTH\VORM. Anabio.sis of the 57 



Embryonic development in mice. Obser- 

 vations on the relation between suckling 

 and the rate of 49 



Engelm. I. History of the nuclei during 

 division and conjugation. Uroleptus 

 mobilis 293 



Epithelial movement by the use of vital 

 staining, with observations on phagocyto- 

 sis in the corneal epithelium. Demon- 

 stration of 37 



531 



Excretory toxins. The reaction of Selachii to 

 injections to various non-toxic solutions 

 and suspensions (including vital dyes), 

 and to 101 



FLUCTUATIONS in a recessive Mende- 

 lian character and selection 157 



Foot in some mollusks. On the use of the. . . 359 

 Frog larv;c. Studies on the relation of iodin 

 to the thyroid. II. Comparison of the 

 thyroid glands of iodin-fed and normal.. 417 



. The effect of adrenin on the pigment 



migration in the melanophores of the 

 skin and in the pigment cells of the 

 retina of the 391 



GL.\NDS of iodin-fed and normal frog 

 larvae. Studies on the relation of iodin 

 to the thyroid. II. Comparison of the 

 thyroid 417 



TTEREDITARY tumor. An 507 



HosKiNs, E. R., AND HosKiNS, M. M. The 

 reaction of Selachii to injections of vari- 

 ous non-toxic solutions and suspensions 

 (including vital dyes), and to excretory- 

 toxins 101 



, M. M., HosKiNS, E. R., AND. The re- 

 action of Selachii to injections of various 

 non-toxic solutions and suspensions (in- 

 cluding vital dyes), and to excretory 

 toxins 101 



TNBREEDING. III. The effects of in- 



1 breeding, with selection, on the sex ratio of 

 the albino rat. Studies on 1 



Injections of various non-toxic solutions and 

 suspensions (including vital dyes), and to 

 excretory toxins. The reaction of Selachii 

 to 101 



Iodin-fed and normal frog larvae. Studies 

 on the relation of iodin to the thyroid. 

 II. Comparison of the thyroid glands of. 417 



to the thyroid. I. The effects of feeding 



iodin to normal and thyroidectomized 

 tadpoles. Studies on the relation of 397 



to the thyroid. II. Comparison of the 



thyroid glands of iodin-fed and normal 

 frog larvae. Studies on the relation of. . 417 



Isopods to light. Reactions of land 193 



JACOBS, M. H. Acclimatization as a fac- 

 tor affecting the upper thermal death 

 points of organisms 427 



KING, Helen Dean. Studies on in- 

 breeding. III. The effects of inbreed- 

 ing, with selection, on the sex ratio of 



the albino rat 1 



KiRKHAM, William B. Observations on the 

 relation between suckling and the rate of 

 embryonic development in mice 49 



LARVAE. Studies on the relation of iodin 

 to the thyroid. II. Comparison of the 

 thyroid glands of iodin-fed and normal 



frog 417 



Light in the colonial forms, Volvox glabator 

 and Pandorina morum. Reversion in the 



sense of orientation to 367 



. Reactions of land isopods to 193 



MAST, S. O. Reversion in the sense of 

 orientation to light in the colonial 

 forms, Volvox globator and Pandorina 



morum 367 



Mating in a nudibranch Chromodoris zebra 

 Heilprin. Assortive 247 



