1744 ARBORETUM AND FRUTICETUM. PART III. 
1585 
Q. sessilifldra at Studley Park. 
Height 118 ft. ; girt of trunk 333 ft.; diameter of the head 96 ft. 
different, though it is generally alleged that plants of Q. sessiliflora grow 
faster, and they certainly have a more robust appearance, than those of @. : 
pedunculata, when of six or eight years’ growth; for which reason Mr. Bree 
considers it the best species for copse wood. (See Gard. Mag., vol. xii. 
-p. 572.) Willdenow observes, also, that Q. pedunculata is the tenderer 
of the two when young, which may result from its coming earlier into leaf. 
The growth of both species, in about 10 years from the acorn, in good soil, in 
the climate of London, may be stated as from 15 ft. to 18 ft., or even more, if 
extra preparation were given to the soil. Both will attain the height of 50 ft. 
in 30 years, which may be considered the average height of the species in 
ordinary soils in England; but, in deep loamy soils, both attain the height of 
100 ft. and upwards. The stem of the oak, Marshall observes, is naturally 
short ; and, if left to itself, the tree, in an open situation, will generally feather 
to the ground. It has not the upright growth of the ash, the elm, and the ~ 
pine tribe: nevertheless, by judicious training, or by planting in close masses, 
the oak will acquire a great length of stem; in this case, however, it rarely 
swells to any considerable girt. There are many hundreds of oak trees, we 
are informed, in the government plantations in the Forest of Dean, which, . 
