CONTENTS. 
CHAPTER I. 
GENERAL SKETCH OF THE EARLY PROGRESS IN NATURAL 
HISTORY . 
CHAPTER II. 
NOMENCLATURE AND CLASSIFICATION . . . . . 
CHAPTER III. 
CATEGORIES OF CLASSIFICATION 
CHAPTER IV. 
CLASSIFICATION AND CREATION . . . . . . 
CHAPTER V. 
DIFFERENT VIEWS RESPECTING ORDERS. . . « 
CHAPTER VI. 
GRADATION AMONG ANIMALS . . . . . . 
CHAPTER VII. 
ANALOGOUS TYPES - + + + «© «© «© «© 4 
CHAPTER VIII. 
. 
FAMILY CHARACTERISTICS * . . 
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