THE SCOPE OF BIOLOGY 25 



CALKINS, Protozoology, Lea & Febiger, New York. 



COLTON, Zoology, Descriptive and Practical, D. C. Heath & Co., 

 Boston. 



DAVIDSON, Practical Zoology, American Book Company, New York. 



HAWK, Physiological Chemistry, P. Blakiston's Son & Co., Philadelphia. 



LONG, Text-book of Physiological Chemistry, P. Blakiston's Son & 

 Co., Philadelphia. 



MELL, Practical Laboratory Methods, Macmillan Co., New York. 



PARKER and PARKER, Practical Zoology, Macmillan Co., New York. 



PAYNE, Manual of Experimental Botany, American Book Company, 

 New York. 



PRATT, Invertebrate Zoology, Ginn & Co., Boston, Mass. . 



RICHARDS and WOODMAN, Air, Water, and Food, Wiley & Son, New 

 York. 



ROCKWOOD, Laboratory Manual of Physiological Chemistry, F. A.Davis, 

 Philadelphia. 



SHARPE, Laboratory Manual in Biology, American Book Company, 

 New York. 



