IV CONTENTS OF VOLUME XXVII. 



FOOT, KATHARINE, AND STROBELL, E. C. Preliminary Report of 

 Crossing two Ilemipterous Species with Reference to the Inheritance 

 of a Second Exclusively Male Character 217 



No. 5. NOVEMBER, 1914. 



HARVEY, E. NEWTON. Is the Fertilization Membrane of Arbacia 



Eggs a Precipitation Membrane! 237 



KINGERY, H. M. So-called Parthenogenesis in the White Mouse. . . . 240 



BANTA, A. M. AND GORTNER, R. A. A Milky White Amphibian Egg 



Jell 259 



ROGERS, C. G. AND LEWIS, E. M. The Relation of the Body Tem- 

 perature of the Earth-worm to that of its Environment 262 



ROGERS, C. G. AND LEWIS, E. M. The Temperature Coefficient of 

 the Rate of Contraction of the Dorsal Blood-vessel of the Earth- 

 worm 269 



TURNER, C. H. AND SCHWARZ, E. Auditory Powers of the Catocala 



Moths; an Experimental Field Study 275 



No. 6. DECEMBER, 1914. 



WODSEDALEK, J. E. Spermatogenesis of the Horse with Special Ref- 

 erence to the Accessory Chromosome and the Chromatoid Body. . 295 



TURNER, C. H. An Experimental Study of the Auditory Powers of 



the Giant Silkworm Moths (Saturni-idce) 325 



HICKERNELL, L. M. A Preliminary Account of Some Cytological 



Changes Accompanying Desiccation 333 



RUNYAN, E. M., AND TORREY, H. B. Regulation in Vorticella 343 



