ie ee ae 
65 
Pine was planted 12 by 12 feet apart, with Boxelder for nurse trees, 
but all were dead by the end of the second year. Larger specimens, 
planted in the college lawn, lived through several years, making a 
feeble growth, but all succumbed in the drought of 1894. European 
Larch and Boxelder were set in one plat, and the Larch made a good 
stand, but a freeze in May, 1890, when the Larch leaves were half 
grown, kilied a large number of the trees. It required several years 
for the Larch remaining to form leading shoots, and the best trees in 
the plantation are now scarcely as high as the Boxelder among 
which they grow. The species was highly recommended for planting 
throughout the West a number of years ago, but this experiment does 
not demonstrate in it any value for this latitude. 
The following discussion of plats in this planting is given as illus- 
trating the action of the several species in mixture: 
PLAT 1.—One-half acre, 4 by 4 feet, 1,361 trees. 
Beas abe: Bas 
1 Wd) Bak aS 
DeaOrsb. S- B.C 
Rebar SPB 
Bese bo) © Bas 
Peebok 2B PB 
1554 Or") Bes bien © 
Ear bb PB 
B—Boxelder. 
P— Populus certinensis (Russian Poplar). 
S—White Spruce (Scotch Pine substituted in one-third of plat). 
C—Cottonwood. 
The Russian Poplar soon failed largely, and it was replaced the 
second and third year after planting with Green Ash. The White 
Spruce were wild seedlings dug in the Black Hills and grown one year 
in nursery rows, at the college. The Spruce was set at the same time 
the other trees were, and the weather being favorable a good stand was 
secured. The first few years the growth was extremely small, but the 
trees are now (1897) well established and are making vigorous growth 
in the shade of the Boxelders, which average two to three times their 
height. In most cases the Boxelder crowns meet over the Spruce, 
but as yet the latter show no injury from the shading. 
The Scotch Pines in this plat are fully equal to those in plat 8, noted 
below, and the Boxelder and Silver Maple seem to have about the 
same effect as nurse trees. The Cottonwoods have thinned out consid- 
20191—No. 18 D 
