ANATOMY AND PHYSIOLOGY OF PLANTS. 247 



the nucleus, through all of which, vessels are distri- 

 buted, to form a medium of communication from one 

 part to another. 



In some cases, the vessels are seen to branch off on each side from 

 the radicle, and spread themselves by innumerable ramifications 

 through the cotyledons. From the radicle, vessels also pass upwards 

 to the plume. 



44. The intention of the seed, as a perfect body, can 

 require no particular remarks for the present; at ano- 

 ther time, we shall introduce it under an article on 

 germination. 



RECEPTACLE. 



45. The receptacle, as we have already observed, is 

 the part to which the flower or fruit is attached, and as 

 these parts do not have one common situation, recepta- 

 cles necessarily differ in their anatomical structure, ac- 

 cording to the plants to which they belong. 



In a general way, they are composed of the same texture as the 

 parts from which they proceed, only in a different state of mo- 

 dification. 



ON THE APPENDAGES TO PLANTS. 



1. The subject of our present treatise, will be the 

 anatomy and physiology of those extra organs, which 

 have been previously arranged as appendages to the ve- 

 getable organization, viz. the branch, the bulb, the bud, 

 the petiole, and so on. 



