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 Lancaster, Pa. Garrison, N. Y. 



NEW YORK : Sub-Station 84 



THE BULLETIN— For bargains in Ethnolograph- 

 »ric Specimens, Books on Natural 

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 4 Duke St., Adelphi-London-Eagiand 



TENTH EDITION. 



THE MICROSCOPE, 



an introduction to Microscopic Methods and toHistolotX 



BSSBSBBS* 



COMSTOCK PUBLISH1NO CO., Ithaca, N. Y. 



BIRDS' EGGS 



W. F. H. ROSENBERG, 



, 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- 

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 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 Fishes. 



Largest Stock in the world of specimens 

 in all branches of Zoology. 



University of Colorado 



Mountain Laboratory 



Fourth summer session June 24 to Au- 

 gust 2, 1912. Courses in Field Biology 

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The laboratory is at Tolland, Colo., in 

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 Fees and expenses moderate. 



For pamphlet address the professor m 



Dr. Francis Ramaley 



University of Colorado 

 BOULDER COLORADO 



