398 . Wells on the Soils of the Scioto Valley, Ohio. 
Constituents soluble in dilute Acid. 
Iron, Alumina, and Manganese, = 02.000 
Organic matter combined with Iron, 
Alumina and Manganese, = 00.440 
Silica, soluble, = 00,200 
i = 2.55 
Magne == KSS 
Tísces. m Phosphoric - not ipeo 
Alkalies 
Total per centage of extract with Acid, == 6.470 
Carbonic Acid, = 09.30 
Organic saei poni selaMe by Ammonia, = 00.42 
Soda, = 00.05 
Organic matter remaining with the iasaleble residue and de- 
termined by ignition = 00.50 
Insoluble silicates, == 90.27 
Total, = 100.507 
Another soil analyzed was taken from an uncultivated por- 
tion of the Ree Ree Bottom. ‘This land is set in grass, 
which has never been mowed, but is occasionally pastured. 
Chemical analysis gave the following results : — 
Water, hygroscopic and combined, = 01.56 
icem and nice matters _— by A — 00.0024 
— 
"Total, == 00.0033 
Constituents soluble in pure Water. 
Berzelius’s extract of earth, Alkaline chlorides in 
the traces of Lime, = 0.237 
matter, ely Crenie Acid, = 0.050 
Iron, Lime, with traces of Silica, = 0.055 
Total water extract, = 0.342 
Per centage, = 00.111 
