GENERAL TEXTURE OF PLANTS, 15 



close spiral line, /. c ; in others several of 

 these holes run together, as it were, into 

 interrupted spiral clefts, f, d ; and in some 

 those clefts are continued, so that the whole 

 tube, more or less, is cut into a spiral line, 

 f. e ; which, in some young branches and ten- 

 der leaves, will unroll to a great extent, when 

 they are gently torn asunder. The cellular 

 texture especially is extended to every part 

 of the vegetable body, even into the thin 

 skin, called the cuticle, v/hich covers every 

 external part, and into the fine hairs or down, 

 which, in some instances, clothe the cuticle 

 itself 



Before we offer any thing upon the sup- 

 posed functions of these different organs, 

 we shall take a general view of the Vegetable 

 body, beginning at the external part and 

 proceeding iowards. 



