COLTON'S PHYSIOLOGIES. 



PHYSIOLOGY: Experimental and Descriptive . . . $1.12 

 For High Schools, Normal Schools, and Colleges. 440 

 pages. Illustrated in colors. 



PHYSIOLOGY: Briefer Course 90 



For High Schools. 399 pages. Illustrated in colors. 



ELEMENTARY PHYSIOLOGY AND HYGIENE . . .60 



For Elementary Schools. 320 pages. Illustrated. 



D. C. HEATH & CO., Publishers, Boston, New York, Chicago. 



COPYRIGHT, 1899 AND I 9 OI > 

 BY BUEL P. COLTON. 



TYPOGRAPHY BY J. S. GUSHING & CO ., NORWOOD, MASS. 



