CONTENTS OF VOLUME VI. 
Nos ——Theorynots CollimeationSmar).rjeicilersi= ie clare cleneles= H. B. Newson. 
2.—The Pennsylvanie Amphibia of the Mayou Creek, Illinois, 
ShalestmePlates Wl comxelivirrareryate.rencrsretsrteret leis Roy L. Moodie. 
3.—Krametia cans. Plates XV. to XXII........... C. M. Sterling. 
4.—Evidences of Pleistocene Crustal Movements in the Mis- 
SISSIPPIaValleypecsteieee eo eee oat Odd: 
5.—The Influence of Salt Solution Upon the Intestine of the 
ID, JBI Oca lll PS ooo oa oom eos bs OOD OOOGaS Grace Russell. 
6.—A Comparison of Three Skulls of Castoroides. Plates 
EXOXUTAV UAL Op RONG VAL Levens ereratey chee sats Ace leie hele fone: eter ¢ H. T. Martin. 
7. Cytological Studies of Femur-rubrum and Other Melanopli. 
Telia, MOWALUL tie; O-OC0lS, oo oecconccnaoecdH Jadine Nowlin. 
