AMERICAN NATURE SERIES (Continued) 



I. NATURAL HISTORY (Continued) 



Section B. A Shorter Natural History, mainly by the Authors 

 of Section A, preserving its popular character, its proportional treat- 

 ment, and its authority so far as that can be preserved without its 

 fullness. Size not yet determined. 



II. CLASSIFICATION OF NATURE 



1. Library Series, very full descriptions, 8vo. 7Axl0j in. 



Already publisht: 



NORTH AMERICAN TREES, by N. L. Britton, Director of the 

 New York Botanical Garden. $7.00 net; carriage extra. 



FERNS, by Campbell E. Watkrs, of Johns Hopkins University, 

 $3.00 net; by mail, $3.30. 



2. Pocket Series, Identification Books — " How to Know," brief and 



in portable shape. 



III. FUNCTIONS OF NATURE 



These books will treat of the relation of facts to causes and 

 effects— of heredity and the relations of organism to environment. 

 8vo. 6§x8g in. 



Already publisht: 



THE BIRD : ITS FORM AND FUNCTION, by C. W. Beebe, 

 Curator of Birds in the New York Zoological Park. $3.50 net; 

 by mail, $3.80. 



Arranged for: 



THE INSECT: ITS FORM AND FUNCTION, by Vernon L. 

 Kellogg, Professor in the Leland Stanford Junior University. 



THE FISH : ITS FORM AND FUNCTION, by H.M.Smith, of 

 the U. S. Bureau of Fisheries. 



IV. WORKING WITH NATURE 



How to propagate, develop, care for and depict the plants and 

 animals. The volumes in this group cover such a range of subjects 

 that it is impracticable to make them of uniform size. 



Already publisht: 



NATURE AND HEALTH, by Edward Cirtis, Professor Emeritus 

 in the College of Physicians and Surgeons. 12mo. $1/25 net; 

 by mail, $1.37. 



THE FRKSHWATER AQUARIUM AND ITS INHABITANTS. 

 A Guide for the Amateur Aquarist, by Otto Eggeling and 

 Frederick Ehrenberg. Large 12 mo. $2.00 net; by mail, $2.19. 



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