80 
ANALYSES OF THE GRASSES. 
Analysis of the ash. 
Silex ....... 
Phosphates of lime, iron and magnesia - 
Carbonate of lime - 
Magnesia ...... 
Potash 
Soda ....... 
Chlorine ...... 
Soluble silica - 
Sulphuric acid . ... . 
Carbonic acid . ... . 
Organic matter . ... . 
Per centum. 
27-000 
16-800 
5-450 
0-100 
1-610 
24-120 
3-360 
1-000 
11-880 
0-710 
5-260 
97-290 
In this analysis, we find large amounts of soda and sulphuric acid, and only a small 
quantity of potash. It is an unimportant grass, and it is not sought after by any kind of 
stock, though it is occasionally eaten. If it can be obtained, however, for the litter of the 
barn yard, or for the compost heap, it would form a valuable addition. 
X. BLACKISH-GREEN CLUBRUSH (Scirpus atrovirens). 
Gathered three miles south of Albany : cut June 22; height 30-36 inches, just out of 
flower. One stalk weighed 112-62 grs., and gave 
Water ----- 
. 
Per centum. 
40-881 
Dry matter - - - - 
- 
59-119 
Ash ----- 
- 
2-353 
Ash calculated dry 
- 
3-980 
Organic matter calculated dry 
- 
96-020 
Ash saline. The percentage of inorganic matter in these two last species of Scirpus 
is greater than in the Juncus effusus, and less than in the Glyceria fluitans, and the 
other grasses given. 
