The American Naturalist 



8 Editor of THE AMERICAN NATURALIST, Garri) 

 tides containing research work bearing on the f 



One hundrea reprints of contributions are supplied to authors free of < 

 er • . will be supplied at cost. 



sent to the publishers. 



dollars a year. Forei 

 wenty-five cents additional. 1 

 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 



TO ORNITHOLOGISTS 

 AND MUSEUMS 



W. F. H. ROSENBERG 



Begs to announce the publication of a new 

 Price List (No. 11) of Bird Skins. This 

 catalogue contains over 5,004) species, and is the 

 largest and most complete price list of birds 

 ever published. It is arranged in systematic 

 order, based on the classification of the British 

 Museum "Catalogue of Birds," with authors' 



to families. It will be sent gratis and post 

 free on application, as will the following lists : 



No. 7, Mammals ; No. 8, Birds' Eggs ; 



No. 9, Reptiles, Amphibia, and Fishes. 



Specimens sent on approval. 



Fifty Years of Darwinism 



; the eleven addresse 

 of Charles Darwin delivered 1 

 American Association for the 



Henry Holt & Company 



34 West 33d 5 

 378 Wabash i 



Microscopes "d Accessories 



Hand Cameras of Highest Quality 

 Binoculars, Prism and Galilean 



! Scientific Instruments 



Laboratory Apparatus 



! Max Meyer New York 



