CONTENTS OF VOL VIII. 



No. I. — April, 1893. 



Pages 

 I. Wm. M. Wheeler. 



A Contribution to Insect Embryology . 1-160 



II. Jacques Loeb. 



A Contribution lo the Physiology of Col- 

 oration in Ajiimals 161-164. 



III. W. S. Miller. 



The Structure of the Lnng 165-188 



IV. Albert C. Eycleshymer. 



The Developme7it of the Optic Vesicles 



in Amphibia 189-194 



No. 2. — May, 1893. 



I. J. S. Kingsley. 



The Embryology of Linmlits {Part II) . 195-268 

 II. Edwin O. Jordan. 



The Habits and Development of the 



Newt 269-366 



III. WiLLLAM A. LOCY. 



The Formation of the Mediillary Groove 



in the Elasmobranchs 'h^^-'^7^ 



IV. Howard Ayers. 



Some Nerve-Mnscle Experiments on the 



^^''^s , 379-392 



