26 OF THE BARK. 



Carrot, the red part of which is all bark. 

 In the Parsnep, though not distinctly colour- 

 ed, it is no less evident. In the Turnip it is 

 much thinner, though equally distinct from 

 the wood or body of the root. 



The Bark contains a great number of 

 woody fibres, running for the most part lon- 

 gitudinally, which give it tenacity, and in 

 which it differs very essentially from the parts 

 already described. These woody fibres when 

 separated by maceration exhibit in general 

 a kind of net-work, and in many instances 

 great regularity and beauty of structure. In 

 a family of plants to which the Mezereon be- 

 longs, the fibres of the inner bark have a 

 beautiful white shining appearance like silk. 

 In one of this tribe, a native of Jamaica, and 

 called Lace Bark, that part may be separated 

 by lateral extension into an elegant kind of 

 lace. 



In the old bark of the Fir tribe, on the 

 contrary, nothing of this kind is discernible. 

 The bark of the Cluster Pine, Pinus Pinaster, 

 some inches in thickness, is separable into 

 thin porous layers, each of them the produc- 

 tion of one season, which do really seem te 



