604 



INDEX 



KENNEL. Effects of light and darkness on 

 the eye of Proihynchus applanatus. . . . 519 

 Kepner, Wm. a. and F'oshee, A. M. Effects 

 of liiiht and darkness on the eye of Pro- 

 ihynchus applanatus Kennel 519 



LARVAE to light and darkness. The reac- 

 tions of the melanophores of Amblystoma 

 tigrinum 195 



Laurens, Henry. The reaction of the mel- 

 anophores of Amblystoma tigrinum lar- 

 vae to light and darkness 195 



Laurens, Henry and Williams, J. W. 

 Photomechanical changes in the retina 

 of normal and transplanted eyes of Ambly- 

 stoma larvae 71 



Light and in continuous light of different 

 illuminations, and its bearing on the 

 "continuous action theory" of orientation. 

 The rate of locomotion in Vanessa antiopa 

 in intermittent 507 



Light and darkness on the eye of Prorhynchus 

 applanatus Kennel. Effects of 519 



Light and darkness. The reactions of the 

 melanophores of Amblystoma tigrinum 

 larvae to 195 



Light. ■ Reactions of the whip-tail scorpion to 251 



LiLLiE, Frank R. The free-martin; a study 

 of the action of sex hormones in the foetal 

 life of cattle 371 



Locomotion in Vanessa antiopa in intermittent 

 light and in continuous light of different 

 illuminations, and its bearing on the 

 "continuous action theory"of orientation. 

 The rate of 507 



LoNGLEY, W. H. Studies upon the biological 

 significance of animal coloration 533 



Lowe, John N. The action of various phar- 

 macological and other chemical agents on 

 the chromatophores of the brook trout 

 Salvelinus fontinalis Mitchill 147 



MACDOWELL, Edwin Carleton. Bristle 

 inheritance in Drosophila. II. Selection 109 



Mann, Frank C. and Drips, Della. The 

 spleen during hibernation 277 



Mast, S. O. Conjugation and encystment in 

 Didinium nasutum with especial reference 

 to their significance 335 



McCord, Carey 'Pratt and Allen, Floyd 

 P. Evidences associating pineal gland 

 function with alterations in pigmenta- 

 tion 207 



Melanophores of Amblystoma tigrinum larvae 

 to light and darkness. The reactions of 

 the 195 



Microdissection studies II. The cell aster: a 

 reversible gelation phenomenon 483 



Microscopic study of the reproductive system 

 of foetal free-martins. A 453 



Mollusc Crepidula plana. 1. History of the 

 cycle. Studies on sex in the hermaphro- 

 dite 1 



Mollusc Crepidula plana. II. Influence of 

 environment on sex. Studies on sex in 

 the hermaphrodite 225 



NASUTUM with especial reference to their 

 significance. Conjugation and encyst- 

 ment in Didinium 335 



PARAMOECIUM possessing extra contrac- 

 tile vacuoles. I. An account of the 

 morphology, physiology, genetics and 

 cytology of this new race. Studies on a 



race of 287 



Patten, Bradley M. Reactions of the whip- 

 tail scorpion to light 251 



Pharmacological and other chemical agents on 

 the chroHKitaijliores of the brook trout 

 Salvelinus fontinalis Mitchill. The ac- 

 tion of various 147 



Photokinetic reactions of frog tadpoles. The 361 



Photomechanical changes in the retina of nor- 

 mal and transplanted eyes of Ambly- 

 stoma larvae 71 



Pigmentation. Evidences associating pineal 

 gland function with alterations in 207 



Pineal gland function with alterations in pig- 

 mentation. Evidences associating 207 



Plana. I. History of the sexual cycle. 

 Studies on sex in the hermaphrodite 

 mollusc Crepidula 1 



Plana. II. Influence of environment on sex. 

 Studies on sex in the hermaphrodite 

 mollusc Crepidula 225 



Prorhynchus applanatus Kennel. Effects of 

 light and darkness on the eye of 519 



RATE of locomotion in Vanessa antiopa in 

 intermittent light and in continuous 

 light of different illuminations, and as 

 bearingon the"continuous action theory" 

 of orientation. The 507 



Reactions of frog tadpoles. The photokinetic. 361 



Reactions of the melanophores of Ambly- 

 stoma tigrinum larvae to light and dark- 

 ness. The 195 



Reactions of the whip-tail scorpion to light. . . 251 



Reagan, Franklin Pearce. The role of 

 the auditory sensory epithelium in the 

 formation of the stapedial plate 85 



Reproductive system of foetal free-martins. 

 A microscopic study of the 453 



Retina of normal and transplanted eyes of 

 Amblystoma larvae. Photomechanical 

 changes in the 71 



Reversible gelation phenomenon. Microdis- 

 section studies II. The cell aster: a 483 



SALVELINUS fontinalis Mitchill. The 

 action of various pharmacological and 

 other chemical agents on the chromato- 

 phores of the brook trout 147 



Scorpion to light. Reactions of the whip-tail.. 251 



Selection. Bristle inheritance in Drosophila. 

 II 109 



Sensory epithelium in the formation of the 



stapedial plate. The role of the auditory. . 85 



Sex in the hermaphrodite mollusc Crepidula 

 plana. I. History of the sexual cycle. 

 Studies on 1 



Sex in the hermaphrodite mollusc Crepidula 

 plana. II. Influence of environment on 

 sex. Studies on 225 



Sex hormones in the foetal life of cattle. The 

 free-martin ; a study of the action of 371 



Spleen during hibernation The 277 



Stapedial plate. The role of the auditory 

 sensory epithelium in the formation of the. 85 



TADPOLES. The photokinetic reactions 

 of frog 361 



Tigrinum larvae to light and darkness. The 

 reactions of the melanophores of Am- 

 blystoma 195 



Trout Salvelinus fontinalis Mitchill. The 

 action of various pharmacological and 

 other chemical agents on the chromato- 

 phores of the brook 147 



VACUOLES. I. An account of the mor- 

 phology, physiology, genetics and cytol- 

 ogy of this now race. Stuflies on a race of 

 paraniocciuni po.ssessi iig extra contractile . 287 

 Vanessa antifii)a in iiiterniittont light and in 

 continuous light of ditlerent illuminations 

 and its bearing on the "continuous action 

 theory" of orientation. The rate of 

 locomotion in 507 



w 



HIP-TAIL scorpion to light. Reactions 

 of the 251 



