The American Naturalist 



sent t o"t h e*E d o r of T H E AMERICAN NATURALIST, VarV*on-on°-r 



Articles containing research work bearing on the problems of organic evolu- 

 tion are especially welcome, and will be given preference in publication. 

 r.»»i. ° ne nu . n ^ rea . r "P rint8 of contributions are supplied to authors free of charge. 

 Farther reprints will be supplied at cost. 



Subscriptions and advertisements should be sent to the publishers. The 

 subscription price is four dollars a year. Foreign postage is fifty cents and 

 Canadian postage twenty-five cents additional. The charge for single copies is 

 thirty-five cents. The advertising rates are Four Dollars for a page. 



THE SCIENCE PRESS 

 Lancaster, Pa. Garrison, N. Y. 



NEW YORK : Sub-Station 84 



THE BULLETIN— f 



! Specimens. Books 



! St., Adelphi-London-England 



TENTH EDITION. 



THE MICROSCOPE, 



an introduction to Microscopic Methods and to Histology, 

 by Simok Hknby Gage, of Cornell University. , Orer 

 360 large octavo pages and above 260 figures in this new 

 and fully reviswfedition. Price $2 00, postpaid. 

 COMSTOCK PUBLISHING CO., Ithaca, N. Y. 



BIRDS' EGGS ! Back or Current Numbers 



W. F. H. ROSENBERG, 

 57 Haverstock Hill, London, N. W. 

 England 



begs to announce the publication of a 



Pri. 



15) of Birds' Eggs, c< 

 ing over 900 species from all parts 

 world. This Catalogue is svstenuu 

 arranged, with author-' iwinu-s. ir.dii 



It will be 

 will the folk 



i appli- 



No. 12. Lepidoptera, (5,000 species) • N 

 13. Coh-optera : No. 14, Mammals. 



In course of preparation : New Pri* 

 List of Reptiles, Amphibians and Fishes. 

 . kfrges* Stock in the world of specimei 

 in all branches of Zooloev 



of any American or Foreign technical 

 or trade journal and magazine fur- 

 nished on short notice at moderate 

 rates ; all kinds of Government and 

 State Reports in stock. Clippings on 

 special subjects furnished promptly. 

 Large stock of American Naturalist, 

 Science and Popular Science on hand. 



Magazines, Books and Papers 

 of all kinds bought 



Special Subscription Price List on request. 

 Information concerning any periodical 

 furnished free of charge. 



A. W. CASTELLAN0S 

 259 Armstrong Ave., 

 Jersey City, N.J., U.S.A. 



