Bibliography 113 



WODISKA, J., A Boof^ of Precious Stones, New York: G. P. Putnam's Sons. 

 SWENGEL, H. & L.j The Romance of Your Eirthstone, Ithaca, N. Y.: Slinger- 

 land-Comstock Co. 



INSECTS 



BEARD, DANIEL CARTER, American Boys' Boo\ of Bugs, Butterflies, and 

 Beetles, Philadelphia: J. B. Lippincott & Co. This is a good book; a useful, 

 entertaining, well illustrated volume that belongs in the library of every 

 boy and girl. 



LUTZ, FRANK EUGENE, Field Boo\ of Insects, New York : G. P. Putnam's Sons. 

 Especially suited to the study of insects in the northeastern United States. 



Our Insect Friends and Foes, Washington, D. C.: National Geographic 

 Society. Stories about the lives of bees, ants, beetles, bugs, butterflies, etc. 



MAMMALS 



BEARD, DANIEL CARTER, American Boys' Boo^ of Wild Animals, Philadel- 

 phia: J. B. Lippincott & Co. The writer has long been a favorite for 

 young people. 



BLAIR, WILLIAM REID, In the Zoo, New York: Scribner & Sons. Written 

 with the understanding of a man who has taken pride in the develop- 

 ment of his "animal children" for more than twenty-seven years. 



MOSSES 



MARSHALL, N. L., Mosses and Lichens, Garden City, N. Y.: Doubleday, 

 Doran & Co. One of the few books describing the common lichens. 



REPTILES 



DITMARS, RAYMOND L., The Boo^ of Living Reptiles, Philadelphia: J. B. 

 Lippincott & Co. Written for young people. 



TREES 



HARLOW, WILLIAM M., Pn.D., Trees of the Eastern United States and 

 Canada (Whittlesey House, McGraw-Hill Book Co., Inc., New York 

 City). 



KAUFFMAN, ERLE, Kingdom of the Trees (Reilly and Lee, Chicago, 1940). 



