Scotch
Pine, on account of the greater elasticity of its wood. The great
abundance of soft needles falling from it every year better fits it
for improving a worn-out soil than any European Pine, therefore the
tree has been tried with success as a nurse for the ground in forest
plantations of Oak, when the latter begin to be thinned out by nature,
and grass is growing underneath them.

And finally, all observations agree that the White Pine is a faster
growing tree than any native Conifer in Europe, except, perhaps, the
Larch. The exact facts about that point, taken from investigations on
good soil in various parts of Germany, are as follows:

Years. Height. Annual Growth During
Last Decade.
The White Pine at 20 reaches 7.5 meters. 37 centimeters
" 30 " 12.5 " 50 "
" 40 " 18.5 " 60 "
" 50 " 22.5 " 40 "
" 60 " 26.5 " 40 "
" 70 " 28.5 " 20 "
" 80 " 30.0 " 15 "
" 90 " 32.0 " 20 "

For comparison I add here the average growth on good soil, of the
Scotch Pine, one of the most valuable and widely distributed timber
trees of Europe.

Years. Height. Annual Growth During
Last Decade.
The Scotch Pine at 20 reaches 7.3 meters. 36.5 centimeters
" 30 " 11.6 " 43.0 "
" 40 " 15.7 " 41.0 "
" 50 " 19.4 " 37.0 "
" 60 " 22.1 " 27.0 "
" 70 " 24.0 " 22.0 "
" 80 " 26.0 " 17.0 "
" 90 " 27.5 " 15.0 "
" 100 " 28.5 " 10.0 "
" 120 " 30.0 " 7.5 "

That is, the White Pine is ahead of its relative during its entire
life and attains at 80 years a height which the Scotch Pine only
reaches in 120 years. It appears then that the whole volume of wood
formed within a certain period by an acre of White Pine forest is
greater than that yielded by a forest of Scotch Pine within the same
period.

As far as reliable researches show, a forest of White Pine when
seventy years old gives an an