CONTENTS OF VOLUME XLVIII. V 



Xo. 6. JUNE, 1925. 



H V.MAN, LIBBIE H. Respiratory Differences Along the Axis of 



the Sponge Grantia 379 



KJ.\NAI>\ , ( '[.. \ki.\CE H. The Distribution of Certain Insects 



of Reversed Behavior . 390 



\Yi<.i.i.\iioi<\, H \KBARA. The Individuality of (he Germ- 

 nuclei During the Cleavage of the Fertilized Egg of the 

 Rotifer, Asplanchna intermedia 402 



TK\< S,HI-.\K\ C. The Relation of Carbon Dioxide to Sponta- 

 neous Movements in the Larvce of Opsanus tan 408 



HAI.IAMN, I-'KAM i> M. The Relation of Body to Environ- 

 mental Temperatures in Turtles, Chryscmys marginala 

 Belli and Chelydra serpentina (Linn.) 432 



Hot n\i \, H. (;// the Color Changes in the Skin of the Lizard 



/':.-, hosodn homalocephalum 446 



( i i \ i i AM>, I.. K. Toxicity of < / Protozoa in I'ivo 



ami in \'itn>; Animals Defaunated icithont Injury 455 



