CENTRAL PARK, 



^YRK. 

 3&&ft,AL mg 



* 



POPULAE SCIENCE 



MONTHLY. 



CONDUCTED BY E. L. YOUMANS. 



VOL. n. 



NOVEMBER, 1872, TO APRIL, 1873. 



NEW YORK : 

 D. APPLETON AND COMPANY, 



649 & 551 BROADWAY. 

 1873. 



