the larger wounds, where much surface is exposed to decay, the white
lead will help to keep out moisture and the organisms which cause decay.
The smaller wounds, however, heal so quickly that the evil effects of
the covering may more than offset the benefits derived from its
use.--R.A. McGinty, Colorado Agricultural College, Fort Collins,
Colorado.

Annual Report, 1915, Montevideo Trial Station.

LYCURGUS R. MOYER, SUPT.

About twenty-six years ago a plantation of white spruce was made at this
station. The trees flourished for several years and bade fair to become
a permanent success, but some six or eight years ago they began to fail
and many of them have since died. The survivors are all in poor
condition. It seems that this tree is not well adapted to prairie
conditions, at least not to the prairies of Southwestern Minnesota. Its
native range is much further north. Here it evidently suffers from heat
and dryness. The Black Hills spruce is commonly regarded as belonging to
the same species. It has not been tested nearly so long, but so far it
seems to be entirely hardy.

Something like thirty years ago a few trees of black spruce, a few trees
of European larch and a few trees of balsam fir were planted here. They
have long since disappeared. White pine planted at about the same time
disappeared with them. A single tree of Scotch pine planted at about the
same time, standing in the open, is gnarled and crooked and shows a
great many dead branches. A forest plantation of several thousand Scotch
pine, made something like twenty-two years ago, is still in good
condition. Many of the trees are from twenty-five to thirty feet high.
Some of the smaller trees have been over-topped and smothered out, but
generally the trees seem healthy. A few hundred of the black, or
Austrian, pine were set at the same time. They are about two-thirds of
the height of the Scotch pine, but they are as healthy and vigorous
trees as one would care to see. Some trees of rock, or bull, pine (Pinus
scopulorum) were set at the same time. They have grown at about the same
rate as the black pine and are healthy, vigorous trees.

Norway spruce has done better here than white spruce, some old trees
fruiting freely. The Colorado blue spruce (Picea pungens) seems to be
our best spruce, and so far as tested the Black Hills spruce is a good
second. Douglas fir has been planted in a small way in the parks, but it
is young yet.

It seems probab