366 Obfervations on the Advantages 
defcribed, and alfo as a wood of great value, 
and an excellent defence for other trees, forming 
in a fhort time a comfortable fcreen around thofe 
that are lefs hardy. Ihave planted large num- 
bers of them round fome pianesciind I have 
made; and nothing can exceed the beautiful - 
appearance thefe lively fkirts of ten Cala 
early in the fpring. ws 
Ill. ‘Fhe laft kind of land I fhall notice in 
thefe obfervations, are thofe mountainous tracts 
of barren rocky hills, which are met with in 
many parts of the country ; and which at prefent 
are nearly ufelefs. It is unneceflary to enlarge 
much upon this fubject, where the faéts lie fo 
much within the range of common obfervation. 
View the large chain of hills, or rather rocks, 
which feparate the vale of Cleveland from the 
moors in the North Riding of Yorkthire! Thefe 
hills are clad with oaks from the foot to: the 
fummit. Between Thirfk and _ Stokefley, 
woods of this defcription afford a moft charm- 
ing and delightful appearance for miles to- 
gether: where the land in general, a flinty 
rock floping to the north, is incapable of 
cultivation, haying little or no foil, except 
the feanty portion which the rains have wafhed 
into fiffures and crevices. In thefe oaks have 
fixed their roots, and made fuch growth, that, 
on one 9 the hills, a furvey of the timber 
made 
