Wells on the Soils of the Scioto Valley, Ohio. 825 
black. Sample examined, of an extraordinary degree of fine- 
ness, and entirely free from stones or pebbles. Absorptive 
and retentive character for moisture, — 7.4170 grammes, dried 
at 219? F., absorbed up to point of saturation 4.5230 grm's 
water; making whole weight of soil and water — 11.9400 
grammes. The above quantity of saturated soil exposed 24 
hours, Therm. 60, to the open dry atmosphere, lost 2.3545 
grm's moisture. 
Continued exposure until weight ceased to vary, under the 
same circumstances, whole loss — 4.2485. 
Thoroughly dried at 212°, additional loss = 0.2745 ; 
whole loss — 4.5230. 
CHEMICAL ANALYSIS. 
Water, hygrometric and combined, = 03.636 
ay and resinous — eeu by alcohol, .0030 
ether, .0025 
Total extract, 0055 
Per centage of the whole amount, — 00.0164 
Constituents soluble in pure Water. 
Extracts of earth; Alkaline chlorides, with traces 
of ime, = .0460 
Organic matter, Crenic Acid, = .0208 
Silica, Iron, Lime, with traces of Sulphuric Acid, = .0652 
Total water extract == .1320 nd 
Total per centage, ES 
Constituents soluble in dilute Acid. 
Tron, Alumina, and traces il Ex?" 
Organie matter in sx PE ah tg Alumina, &c. Ga 0.640 
Silica, soluble, dise" 
Phosphoric Asi; am ad 61 
Potassa and Siudk; m e 
Lime == 1.026 
Make: = 0.236 
Total per centage constituents soluble in acid, 
