BOOKS BY LOUIS AGASSIZ, 



Published by 

 HOUGHTON, MIFFLIN AND COMPANY, 



4 Park Street, Boston; 

 ii East 17TH Street, New York. 



METHODS OF STUDY IN NATURAL HISTORY. 



By Louis Agassiz. With Illustrations. 

 Crown 8vo, gilt top, $1.50. 



CONTENTS: 



I. General Sketch of the Early Progress in Natural History 

 II. Nomenclature and Classification. 

 III. Categories of Classification. 

 IV.. Classification and Creation. 



V. Different Views respecting Orders. 

 VI. Gradation among Animals. 

 YIT. Analogous Types. 

 VIII. Family Characteristics. 

 IX. The Cnaracter of Genera. 

 X. Species and Breeds. 

 XI. Formation of Coral Reefs. 

 XII. Age of Coral Reefs as showing Permanence of Species. 



XIII. Homologies. 



XIV. Alternate Generations. 

 XV. The Ovarian Egg. 



XVI. Embryology and Classification. 



Skillfully planned, and tersely written ; and while embodying 

 many general hints as to the method by which scientific truth has 

 been reached, it sketches the history of science in past times. 

 The knowledge which it imparts so gracefully is of the most 

 interesting character, anu is enforced by apposite and practical 

 illustration. A more delightful scientific work we have never 

 chanced to encounter ; and we therefore cordially commend it to 

 all classes of readers. — New York Albion. 



Never before has science been so completely popularized. — 

 Philadelphia Press. 



