100 
ANALYSES OF THE OAT. 
According to this analysis, the acre, to the depth of one foot, contains 
Lime 
Organic matter 
Magnesia 
Potash - 
Soda 
Chloride of sodium 
Sulphuric acid 
Soluble silica 
14769-562 lbs. 
472013-437 
6261-750 
2178-000 
30219-750 
1497-375 
884-812 
1701-562 
For obvious reasons, the calculations are confined to those elements which exist in the 
smaller quantities. We have only to compare the analyses and the calculations, to form 
an opinion of the effects of cultivation. It is supposed that the greater absorbent power of 
the soil as it is, is due to the organic matter in part added in the manure; inasmuch as we 
have fully shown, in another place, that the absorbent power of a soil is mostly due to the 
presence of organic matter. 
II. The soil of the middle acre was left unmanured ; but it is remarked that it is 
naturally the best soil of the three acres, as it receives the wash of adjacent lands. 
1. Soil of the middle acre as it was. 
One hundred grains, saturated with moisture, gave 
Water. 25 -823 
Dry soil ....... 74-177 
100 grs. of dry soil gave 
Organic matter ...... 4-085 
Water.2-220 
Silica.- 85-185 
Alumina and peroxide of iron - - - 5-610 
Soluble silica ...... O'075 
Lime -------- 0-198 
Magnesia 0-044 
Potash - - - - - _ - - - 0-158 
Soda.1-093 
Chloride of sodium ..... 0-019 
Sulphuric acid. trace. 
Phosphates appreciable. 
98-687 S. 
