16 BULLETIN OF THE BUSSEY INSTITUTION. 
PEATS. 
XXIII. A. Peat, from Thomas Motley, Esq., Bussey Farm. 
Moisture ,. : ‘ : j . 1a 
Volatile matter (beside moisture) . 77.78 
Ash . i : : ‘ : . 6.98 
100.00 
The sample contained : — 
1.20% nitrogen. 
B. Peat, from Henry Saltonstall, Esq., Lynnfield. 
Moisture. : ° : : - 12.50% 
Volatile matter (beside moisture) . 74,52 
Ash .. ° ° : ° : -; 12.08 
100.00 
The sample contained : — 
0.16% of phosphoric acid, and 
1.66 of nitrogen. 
C’. Mud, from a pond-hole, from Henry Saltonstall, Esq. 
Moisture . : ° Tit . 9.24% 
Volatile matter (beside moisture) . 53.82 
Ash . : : 5 : ° » 36.94 
100.00 
The sample contained : — 
0.385% of phosphoric acid, and 
1.47 of nitrogen. 
D. Peat, from Mr. F. H. Appleton, West Peabody. 
The sample contained : — 
1.28% of nitrogen. 
The prices charged for the commercial fertilizers of the foregoing 
list range from $50 to $60 per ton for the superphosphates, and from 
$ 40 to $70 per ton for the dried tankings and blood. But the prob- 
able value to the farmer of the several substances may be calculated 
with tolerable accuracy, as will appear from the following considera-_ 
tions. 
The only constituents the value of which as manure it is worth | 
