CONTENTS. 



CHAPTER I. 



DISTINCTIONS between animals, vegetables and fossils. 

 On the vital principle essential to the two former . p. 1 



CHAPTER II. 



Definition of natural history, and particularly botany. Of 

 the general texture of plants p. 8 



CHAPTER III. 

 Of the cuticle or epidermis p. 13 



CHAPTER IV. 

 Of the cellular integument p. 1 8 



CHAPTER V. 

 Of the bark , p. '20 



CHAPTER VI. 



Of the wood .'. p. 24 



CHAPTER VII. 



Of the medulla or pith , P- 30 



CHAPTER VIII. 



Of the sap-vessels, and course of the sap; with Mr. Knight's 

 theory of vegetation p. 34 



CHAPTER IX. 

 Of the sap, and insensible perspiration p. 48 



b3 



