3<oi 



A 



THE AMERICAN 



MONTHLY 



Microscopical Journal 



CONTAINING 



CONTRIBUTIONS TO BIOLOGY 



VoLaUmr XVII, 



FOR 



1896. 



FOUNDED IN 1880, BY ROMYN HITCHCOCK: F. R. M. S. 



PUBLISHED SINCE 1887, BY CHAS. W. SMILEY, 



WASHINGTON. D. C 



