288 BIOLOGY: GENERAL AND MEDICAL 



REFERENCES. 



"The New International Encyclopedia," N. Y., Dodd, Meade 



& Co., 1907. 

 A. T. MASTERMAN: "Elementary Text-book of Zoology," 



Edinburgh, 1902. 



T. W. GALLOWAY: "First Course in Zoology," Phila., 1906. 

 E. STRASBURGER, F. NOLL, H. SCHENK, and G. KARSTEN: "A 



Text-book of Botany. "Third Engish edition by W. H. 



Lang, N. Y., 1908. 



