451 
These slopes should never he steeper than forty-five degrees. The hills 
surrounding the city of Milwaukee have been, in a number of instances, 
improved by terraces supported by these sods, and make a very beautiful 
appearance, at moderate expense ; affording level spaces for the support 
of fruit-bearing trees and shrubs. 
The following analysis of the ash of this grass are from Emmons’ Ag. 
of N. Y., Yol. ii, p. 77-78. The first was of plants cut when the flowers 
were just appearing ; the second of well made hay, rather after the ma¬ 
turity of the plant: 
• 
First. 
Second. 
Silica. 
56.320 
Silicic acid... 
48 300 
Phosphates... 
11.650 
14.981 
Lime. 
0.030 
Carbonate of lime. 
not determined. 
3.540 
Potash. 
3.531 
15.624 
Soda.... 
12.505 
6.828 
Sodium. 
4.180 
Magnesia. 
a trace. 
1996 
Sulphuric acid. 
5.156 
0.200 
Chlorine. 
6.365 
0.863 
Organic acid... 
4.400 
Loss. 
3.883 
100.000 
100.351 
The amount of water in the newly cut grass, in 100 parts, is...... G4.17 
Dry matter remaining. 34.12 
Ash. 1.71 
The amount of water in the newly cut grass, in 100 parts, is...... G4.17 
Dry matter remaining. 34.12 
Ash. 1.71 
In dry hay the nutrire matter is.95.00 
Ash.. 5.00 
72. POA COMPRESSA. LillTKEUS. 
Blue grass—wire-grass. Culms much flattened, obliquely ascending 
from a creeping rhizoma, the uppermost joint near the middle ; leaves 
short, bluish green; panicle dense, contracted, the short branches 2 to 4 
together, covered to near the base, with the 4 to 9-flowered spikelets; 
flowers linear-elliptical, rather obtuse, hairy below on the lateral nerves 
and keel; ligule short, obtuse. Perennial; flowers from June to August. 
Culms 9 to 18 inches long. Naturalized in Wisconsin, Illinois, Ohio, 
Iowa, Minnesota, and about Lake Superior. 
This, the true “ blue grass,” soon finds its way among the wild grasse* 
