The American Naturalist 



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 sent to the Editor of THE AMERICAN NATURALIST, fiarrison-on-Hudson, New York. 

 Short articles containing summaries of research work bearing on the 



problems of organic evolution s 



in publication. 



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 Further reprints will be supplied at cost. 

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Lancaster, Pa. 



THE SCIENCE PRESS 

 NEW YORK : Sub-Station 84 



Garrison, N. Y. 



S, at the Post Office a 



FOR SALE 



ARCTIC, ICELAND and GREENLAND 

 BIRDS' SKINS, 



Particulars of 

 G. D1NESEN, Bird Collector 

 Husavik, North Iceland, Via Leldle, England 



JAPAN NATURAL HISTORY SPECIMENS 



Perfect Condition and Lowest Prioes. 

 Specialty: Bird Skins, Oology, Entomology, Marine 

 Animals and others. Catalogue free. Correspond- 

 ence solicited. 



T. FUKAI, Naturalist, 



For Sale Entire 



An important collection of Indian Birds' 

 Eggs, containing approximately 3,300 

 specimens of about 620 species, and in- 

 cluding among other varieties the Green- 

 ish Willow Warbler (Acanthopneuste 

 viridanus), Red-browed Finch (Calla- 

 canthis burtoni), Tibetan Sand-Grouse 

 (Syrrhaptes tibetanus), Spotted Sand- 

 Grouse (Pteroclurus senegallus), Ibis- 

 bill (Ibidorhynchus struthersi), White- 

 bellied Minivet (Pericrocotus erythro- 

 pygius), Bearded Vulture (Gypaetus 

 barbatus), numerous Cuckoos with their 

 hosts, etc., etc. 



Particulars and full list may be had 

 from 



W. F. H. ROSENBERG 



57 Haventock Hill London, N. W. 



Marine Biological Laboratory 



Wood* Hole, Man. 



INVESTIGATION gj^jp^jlgjg. 



able for^beginnem^in 



INSTRUCTION 



