216 
PLANTING FOREST TREES. 
flowers the whole year, and in addition, the vacancies are sown in 
the spring, with some of the best annuals chiefly of a minor charac¬ 
ter ; the taller ones being more applicable to the decoration of the 
shrubbery walks, &c. The herbaceous plants are chiefly hardy, yet 
they require some degree of shelter from north winds, (in exposed 
situations) and protection from the mischief of hares and rabbits; 
any light wire fence or trellessing answers for protection, and like¬ 
wise for the support of climbing plants; on the outer side of the 
guard, a second fence or screen would be useful and highly orna¬ 
mental, if composed of evergreen shrubs, and planted alternately 
with Rhododendron Cypress Magnolia, &c. 
I. Smith. 
ARBORICULTURE. 
i 
Article XIII.—ON PRUNING FOREST TREES. 
BY CORONELA. 
The subject of planting and particularly upon elevated and inferior 
lands, is one that has of late years very much occupied the attention 
of the public, and has produced many very ingenious and useful pub¬ 
lications ; but I have never yet seen any full elucidation of the differ¬ 
ent advantages from the application of comparatively good and bad 
land to this purpose. It is very true, that the clothing of mountains 
ivith foliage is not only a laudable measure with reference to the ge¬ 
neral ornament as well as shelter of the country, but it is for the 
most part the best purpose to which they can be applied, and there¬ 
fore to those who happen to be possessed of them, it is a wise pro¬ 
ceeding to commence the process with all possible expedition. 
It is found, that the increase in the circumference of trees is 
generally from about one to two inches annually, and the annual in¬ 
crease in height from twelve to eighteen inches, some falling a little 
short, and others exceeding this calculation. Whilst a tree is grow¬ 
ing annually twelve inches in height, and one inch in circumference, 
it attains twenty-three solid feet in 60 years, another growing with 
an annual increase of eighteen inches in height, and two inches in 
circumference, will attain the same solid contents in thirty-three 
years. Suppose an acre of land which will produce in sixty years, 
