VOL. III. 



NO. 6. 



APRIL, 1897. 



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A Journal Devoted to Research in 

 Natural Science. 



RA TES: — $1.00 per year to all countries, in advance. Single numbers, 10 cts. 



Published the Fifteenth of Bach Month by 



MUSEUM PUBLISHING CO., 



Walter F. Webb, Manager, 

 ALBION, N. Y. 



