74 
ANALYSES OF THE GRASSES. 
IV. QUACK-GRASS (Triticum repens). 
1. First specimen. Grown in the rear of the Old State House : cut May 1; height 11 
inches. Five whole plants weighed 124 grs., and gave the following percentages : 
Water - 
Dry matter - 
Ash - 
Ash calculated dry 
Organic matter calculated dry 
79-355 
20-645 
2-528 
12-245 
87-755 S. 
2. Second specimen. From the same place : cut June 8; height 46-48 inches, just be¬ 
ginning to head out. Five stalks weighed 361 grs., and gave the following per¬ 
centages : 
Water. 80-232 
Dry matter ------- 19-768 
Ash.2-081 
Ash calculated dry ----- 10-527 
Organic matter calculated dry - - - 89-473 S. 
3. Third specimen. From the same place : cut June 21 ; height 50 inches, in flower. 3’wo 
stalks weighed 174-20 grs., and gave the percentages following : 
Water.71-618 
Dry matter ------- 28"3S2 
Ash.2-612 
Ash calculated dry ----- 9"203 
Organic matter calculated dry - - - 90 "797 S. 
D v 
The above shows — excluding the water—a gradual decrease of inorganic, and a 
corresponding increase of organic matter as the plant advances in age. 
4. Fourth specimen. From the same place : cut May 1 ; height 11 inches. 100 grains of 
ash gave 
Carbonic acid 
. 
. 
Per centum. 
1-455 
Silicic acid 
- 
- 
27-150 
Phosphates - 
- 
- 
17-250 
Lime 
- 
- 
0-112 
Magnesia 
- 
- 
trace. 
Potash 
- 
- 
7-350 
Soda 
- 
- 
26•785 
Sodium 
- 
- 
3-565 
Chlorine 
- 
- 
5-425 
Sulphuric acid 
- 
- 
4-811 
Organic acids 
- 
- 
- 
5-200 
99-103 S. 
