The American Naturalist 



sent to the Editor of THE AMERICAN NATURALIST,Garri8on-on Hudson New V 

 tin- .ri ?j!L e 1. ,?" ta, ? ,nB re8ea fch work bearing on the problems of organic 

 tlon are especially welcome, and will be given nreferenm in n„h\io a t; nn 



une hundred reprints of 

 Further reprints will be suppfii 

 Subscriptions 



price is four dollars a year. 



enty-five cents addition! 

 aadv 



Canadian po&tage 



the publishers, 

 je is fifty cent! 

 charge for single copi 

 Four Dollars for a page. 



oreign | 

 . The i 



Lancaster, Pa. 



THE SCIENCE PRESS 

 NEW YORK : Sub-Station 84 



Garrison, N. Y. 



THE BULLETIN— For bargains in Ethnolograph- 

 ical and Pre-historic Specimens. Books on Natural 

 History, Science, Travel, Voyages, etc. See The 

 Bulletin post free for 3 cent stamp. 



4 Duke St., Adelphi-London-England 



TENTH EDITION. 



THE MICROSCOPE, 



an introduction to Microscopic Methods and to Histology, 

 by Simon Hbnby Gage, of Cornell University. Oyer 

 360 large octavo pages and above 250 figure* in this new 

 and fully revised edition. Price $2.00, postpaid. 

 COMSTOCK PUBLISHING CO., Ithaca, N. V. 



BIRDS' EGGS 



W. F. H. ROSENBERG, 

 57 Haverstock Hill, London, N. W., 

 England 



begs to announce the publication of a new 

 Price List (No. 15) of Birds' Eggs, con- 

 taining over 900 species from all parts of 

 the world. This Catalogue is systematic- 

 ally arranged, with author*,' nam es, indica- 

 tions of localities, and an index to families. 

 It will be sent post free on application, as 

 will the following lists: 



No. 11, Birds' Skins, (5,000 species) • 

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

 13, Coleoptera ; No. 14, Mammals. ' 



In course of preparation : New Price 

 List of Reptiles, Amphibians and Fishe" 

 . ^ r f st S f ck tbe world of specimens j 

 in all branches of Zoology. 



Back or Current Numbers 



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. CASTELLANOS 

 259 Armstrong Ave., 

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



