462 GENERAL ZOOLOGY 



Hesse, R.: "Ecological Animal Geography," John Wiley & Sons, Inc., New 

 York. 



Kepner, W. A.: "Animals Looking into the Future," The Macmillan Com- 

 pany, New York. 



Morgan, T. H.: "Evolution and Adaptation," Columbia University Press, 

 New York. 



Pearse, A. S.: "Animal Ecology," McGraw-Hill Book Company, Inc., New 

 York. 



Shelford, V. E. : "Laboratory and Field Ecology," Williams & Wilkins Com- 

 pany, Baltimore. 



: "Animal Communities in Temperate North America," University of 



Chicago Press, Chicago. 



Snodgrass, R. E.: "Anatomy and Physiology of the Honey Bee," McGraw- 

 Hill Book Company, Inc., New York. 



Wheeler, W. M.: "Ants, Their Structure, Development and Behavior," 

 Columbia University Press, New York. 



Chapter XVII 



Beebe, C: "The Bird, Its Form and Function," Henry Holt & Company, 

 New York. 



Harmer, S. F., and A. E. Shipley: " Cambridge Natural History," The Mac- 

 millan Company, New York. 



Lankester, E. R.: "A Treatise on Zoology," A. & C. Black, Ltd., London. 



Metcalf, C. L., and W. P. Flint: "Destructive and Useful Insects," 

 McGraw-Hill Book Company, Inc., New York. 



Parker, T. J., and W. A. Haswell: "Textbook of Zoology," The Macmillan 

 Company, New York. 



Pratt, H. S.: "A Manual of the Common Invertebrate Animals, Exclusive 

 of Insects," P. Blakiston's Son & Co., Philadelphia. 



: "A Manual of the Land and Freshwater Vertebrate Animals of the 



U.S., Exclusive of Birds," P. Blakiston's Son & Co., Philadelphia. 



Snodgrass, R, E.: "Principles of Insect Morphology," McGraw-Hill Book 

 Company, Inc., New York. 



Ward, H. B., and G. C. Whipple: "Freshwater Biology," John Wiley & 

 Sons, Inc., New York. 



Wilder, H. H.: "The Pedigree of the Human Race," Henry Holt & Com- 

 pany, New York. 



Williams, S. H.: "The Living World," The Macmillan Company, New York. 



