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SOILS TESTED FOR SOLUBLE SILICA AND THE PHOSPHATES. 
We subjoin to the foregoing analyses a statement of the several tests, made for the 
purpose of ascertaining the presence of soluble silica and the phosphates. 
1. Marcellus slate soil, Manlius. 100 grs. gave 
Soluble silica___ 0-15 
Phosphates_ _ __a trace. 
2. Soil of Mr. Geddes’s farm, Fairmount. 100 grs. gave 
Soluble silica_ 0-19 
Phosphates appreciable. This is one instance in which the phosphates have been 
detected in this peculiar soil. 
3. Mountmorris, or soil of the Genesee flats. 100 grs. gave 
Soluble silica_ 4-167 
Phosphates not appreciable in 100 grs. It is possible, however, that 100 grains, 
freed of water and organic matter, would give indication of the presence of 
phosphates. 
4. Cayuga clay, cropping out on Cayuga lake, and used for brick. 
Soluble silica, a trace. 
Phosphates not appreciable. 
5. Harmon’s wheat soil, Wheatland. 
Soluble silica evident in 100 grs. 
The phosphates not appreciable in 400 grs. 
6. Soil from the farm of Mr. E. Ball, Hoosic falls. 
Soluble silica, a trace. 
Phosphates, a trace. 
7. Soil in which the Kalmia latifolia grows w4ll : situated upon the ravines underlaid by the 
Marcellus slate. 
Soluble silica_ 0*05 
Phosphates inappreciable. 
8. Soil from the farm of Mr. Levi Hopkins. 
Soluble silica--- 0-05 
Phosphates-a trace. 
9. Albany clay. 
Soluble silica, a trace. 
Phosphates quite evident. 
10. Niagara clay. 
Soluble silica, a trace. 
Phosphates not appreciable. 
11. Peat, from Hoosic falls. 
Soluble silica_ 0*32. 
Phosphates not appreciable. 
