4-7 
fp4 COMPARATIVE ZOOLOGY 
STRUCTURAL AND SYSTEMATIC 
FOR USE IN 
Schools ano Colleges 
BY 
JAMES ORTON, A.M., Ph.D. 
LATE PROFESSOR OF NATURAL HISTORY IN VA8SAR COLLEGE, CORRESPONDING 
MEMBER OF T11E ACADEMY OF NATURAL SCIENCES, PHILADELPHIA 
AND OF THE LYCEUM OF NATURAL HISTORY, N. Y., ETC. 
NEW EDITION, REVISED BY 
CHARLES WRIGHT DODGE, M.S. 
PROFESSOR OF BIOLOGY IN THE UNIVERSITY OF ROCHESTER 
“ The education of a naturalist now consists chiefly in learning how 
to compare."— Agassiz 
HARPER & 
NEW YORK 
1895 
