TWELVE 



LECTURES 



ON 



COMPARATIVE EMBRYOLOGY, 



DELIVERED BEFORE 



THE LOWELL INSTITUTE, IN BOSTON, 



DECEMBER AND JANUARY, 1848-9, 



BY 



LOUISAGASSIZ, 



PROFESSOR OF ZOOLOGY AND GEOLOGY IN THE LAWRENCE SCIENTIFIC SCHOOL, 



CAMBRIDGE UNIVERSITY. 



PHONOGRAPHIC REPORT, BY JAMES W. STONE, A, M., M. D. 

 President of the Boston Phonographic Reporting Association, and of the Buylston Medical Society, 



ORIGINALLY REPORTED AND PUBLISHED IN THE BOSTON DAILY EVENING TRAVELLEK, 



BOSTON: 



HENRY FLANDERS & CO., 



REDDING & CO., GOULD, KENDALL & LINCOLN, JAMES MUNROE & CO- 

 NEW YORK : DEWITT DAVENPORT, TRIBUNE BUILDINGS, 

 PHILADELPHIA '. G. B. ZIEBER & CO. 



1849. 



