ESTABLISHED BY EDWARD L. YOUMANS. 



THE 



POPULAK SCIENCE 





MONTHLY. 





_<> „ 



EDITED BY WILL T A 31 J. Y0U3IANS. 



^ 



2 K ' 5 7 51 



VOL. XXXII. 



NOVEMBER, 1S8Y, TO APRIL, 1S88. 



NEW YORK : 

 D. APPLETON AND OOMPAN^Y, 



1, 3, A>-D 5 BOND STREET. 

 1888. 



