NAT U R E BOOKS 

 Our Trees: How to Know Them 



Photographs from nature by ARTHUR I. EMERSON 



With a guide to their recognition at any season of the 

 year, and notes on their characteristics, 



distribution, and culture 

 By CLARENCE M. WEED, D.Sc. 



140 illustrations. Small quarto. Cloth, $3.50 net. 



Wild Flower Families 



By CLARENCE M. WEED, D.Sc. 

 A popular hand-book which carefully covers the 

 haunts, characteristics, and family relationships, with 

 suggestions for their identification, of the more widely 

 distributed herbaceous wild flowers. 

 80 illustrations. i2mo. Cloth, $1.30 net. 



Birds in Their Relation to Man 



By CLARENCE M. WEED and NED DEARBORN 

 Each family of birds is assigned the performance of certain 

 special functions in the economy of nature, and it is to a study 

 of these functions that this volume is devoted. The authors 

 thoroughly outline the services rendered by the various bird 

 families, making it clear at the same time that the investiga- 

 tion by which their information has been secured is the result 

 of the closest scientific methods. 



Accurately and lavishly illustrated with full-page plates and 

 drawings in the text. Cloth, $2.jo net. 



J. B. LIPPINCOTT COMPANY 



PUBLISHERS :: :: :: :: PHILADELPHIA 



