PART Till. PICTURESQUE PLANTING. 463 



equally diffused throughout the whole plant, as in the sweet- 

 briar, and several others. These are the general characteristics 

 of trees and shrubs ; but there are many other peculiarities 

 which present themselves, upon a more minute examination, 

 which, where ornament is attended to, deserve also the notice 

 of the planter. Some of these I shall advert to in treating of 

 the bark, buds, leaves, flowers, and fruit. 



7. With respect to the bark of trees and shrubs, in some it is 

 of a red colour, as in the dogwood ; in some white, as the 

 birch ; in others black, as the oak ; in some brown, as the 

 Guelder rose ; in others green, as the holly. The texture of the 

 bark of some trees is firm, as the oak ; of others spungy, as the 

 cork tree. The bark of some is very thin, as the beech ; of 

 others very thick, as the Scotch fir. Of some it is brittle, as 

 the hornbeam ;. of others glutinous, as the holly ; of others 

 thready, as the lime and the elm. The duration of bark varies. 

 Some trees throw off annually their outer coat, as the arbutus 

 and the birch ; but most trees constantly retain it The pro- 

 perties of some barks are astringent, as those of the oak 

 and the bramble ; of others sweet, as of the lime ; of others 

 bitter, as of the abele ; of others resinous, as of most of the fir 

 tribe. 



8. With respect to buds, some trees have no buds at all, as the 

 pine tribe, and most evergreens ; in others they are very large, 



