CONTENTS OF VOLUME XXXVI. 



No. i. JANUARY, 1919 



JUST, E. E. The Fertilization Reaction in Echinarachnius 



parma, I I 



JUST, E. E. The Fertilization Reaction in Echinarachnius 



parma, II 1 1 



JUST, E.. E. The Fertilization Reaction in Echinarachnius 



parma , III 39 



FLATHER, MARY D. The Effects of a Diet of Polished and 



Unpolished Rice upon the Metabolic Activity of Para- 



. 

 mecium 63, 



No. 2. FEBRUARY, 1919 



DUESBERG, J. On the Present Status of the Chondriosome 



Problem 71 



CHAMBERS, MARY H. The Effect of Some Food Hormones 

 and Glandular Products on the Rate of Growth of Para- 

 mecium caudatum 82 



JUDAY, CHANCEY. A Freshwater Anaerobic Ciliate 92 



ALLEE, W. C. Note on Animal Distribution Following a 

 . Hard Winter 96 



LUND, E. J. A Simple Method for Measuring Carbon Dioxide 



Produced by Small Organisms 105 



THOMPSON, C. B., AND SNYDER, T. E. The Question of the 



Phylogenetic Origin of Termite Castes 115 



CHILD, C. M. Demonstration of the Axial Gradients by 



Means of Potassium Permanganate : . . . . 133 



No. 3. MARCH, 1919 



KANDA, SAKYA. On the Reversibility of the Heliotropism of 



Arenicola Larvcz by Chemicals 149 



iii 



