ESTABLISHED BY EDWARD L. YOUMANS. 



THE 



POPTJLAK SCIENCE 



donated ** s90C a*t*» 



,-jANTlLfi LIBRARY ASS 



MONTHLY. 



* 



: 



^ano^ 



EDITED BY WILLIAM JAY YOUMANS. 



B-JWHMr9i 



VOL. XXXVII. 



MAY TO OCTOBER, 1890. 





NEW YORK : 



D. APPLETON AND COMPANY, 



1, 3, and 5 BOND STREET. 



u ? "j 



1890. 



