VOL. VI. 



NO. 3. "Whole number 63. 

 JANUARY, 1900. 



U4EU7H 



A Journal Devoted to Research in Natural Science. 



RA TES: — 50 cts. per year to all countries, in advance. Single numbers, 5 cts. 



Published on the 15th of each month by Museum Publishing Co., Albion, N. Y. 



