IV CONTENTS OF VOLUME XXXII. 



No. 4. APRIL, 1917. 



CHILD, C. M. Experimental Alteration of the Axial Gradient in 



the Alga, Griffithsia bornetiana 213 



CI.AYBERG, HAROLD D. The Effect of Ether and Chloroform on 



Certain Fishes 234 



RICHARDS, A. The History of the Chromosomal Vesicles in 

 Fundulus and the. Theory of Genetic Continuity of Chromo- 

 somes 249 



No. 5. MAY, 1917. 

 PATTERSON, J. T. Studies on the Biology of Panicopidosomopsis. 



L, Data on the Sexes 291 



NEWMAN, H. H. On the Production of Monsters by Hybridization 306 

 FOOT, KATHARINE, AND STROBELL, E. C. Results of Crossing 

 Euschistus variolarius and E use Justus icteric us with Reference 

 to the Inheritance of two Exclusively Male Characters 322 



No. d. JUNE, i<>i7. 



HICKERNELL, Louis MAX. .1 Study of Desiccation in the Rotifer, 

 Philodina roseola, with Special Reference to Cytological 

 Changes Accompanying Desiccation 343 



MIAFFER, E. L. Mitochondria and Other Cytoplasmic Structures 



in the Spermatogenesis of Passaliis corn lit us 407 



