VOL. IV. 



NO. 12. 



OCTOBER, 1898. 



U(ELJ?l 



A Journal Devoted to Research in Natural Science 



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



Published on the 1 5th of each month by Museum Publishing Co., Albion, N. Y. 



