VEGETABLE ORGANOGKAPHY. 



BOOK I. 



OF THE ELEMENTARY ORGANS, AND OF THOSE PRI- 

 MARY COMBINATIONS OF THEM WHICH MAY BE 

 CONSIDERED AS ELEMENTARY ORGANS. 



CHAPTER I. 



OF VEGETABLE STRUCTURE IN GENERAL. 



The intimate structure of vegetables, viewed under 

 very powerful microscopes, offers little diversity. Plants 

 the most dissimilar in their external appearance resemble 

 each other internally in a truly extraordinary degree ; 

 all their organs present in the interior but one tissue, of 

 a very homogenous nature, and which seems composed 

 of parts, the structure of which m one plant scarcely 

 differs from that in another, and the absolute dimensions 

 of which are by no means m conformity with the whole 

 size of the vegetable. Grew, who had first made this 

 observation, has given to these parts the name of 

 SiMiLARY Parts, because of this great resemblance 

 which they present throughout the whole vegetable 



