AQUEOUS SOLUTION OF THE SOIL. 315 
below. Dr. Zoller analyzed the water that was thus col- 
lected from a number of soils at Munich, in the half year, 
April 7th to Oct. 7th, 1857. He found 
IN 100,000 OF LYSIMETER-WATER: 
Potash, 0.65 0.24 0.20 0.55 0.38 
Soda, 0.71 0.56 0.74 2.37 0.60 
Lime, 14.58 5.76 7.08 6.84 9.23 
Magnesia, 2.05 0.89 0.18 0.29 0.51 
Oxide of iron, 0.01 0.63 0.83 0.57 0.43 
Chlorine, 5.75 0.95 2.08 3.94 3.52 
Phosphoric acid, 0.22 -- — — — 
Sulphuric acid, 1.05 2.71 2.78 2.93 3.35 
Silica, 1.04 1.13 1.75 _. 0.95 0.93 
Bete master, willl comet 99 47 12.59 13.67 12.08 10.19 
nitric and carbonic acids, 
Total, 47.23 25.46 29.26 30.52 29.15 
The foregoing analyses of drain and lysimeter-water 
‘exhibit a certain general agreement in their results. 
They agree, namely, in demonstrating the presence in the 
soil-water of all the mineral food of the plant, and while 
the figures for the total quantities of dissolved matters 
vary considerably, their average, 363 parts to 100,000 of 
water, is probably about equally removed from the ex- 
tremes met with on the one hand in the drainage from a 
very highly manured soil, and on the other hand in that 
where the soil-solution is diluted with rain or spring water, 
It must not be forgotten that in the analyses of drain- 
age water the figures refer to 100,000 parts of water; 
whereas, in the analyses on p. 311, they refer to 100,000 
parts of soil, and hence the two series of data cannot be 
directly compared and are not necessarily discrepant. 
Is Soil-Water destitute of certain Nutritive Matters ? 
—We notice that in the natural solutions which flow off 
from the soil, phosphoric acid in nearly every case exists 
in quantity too minute for estimation; and when estimat- 
ed, as has been done in a number of instances, its propor- 
tion does not reach 2 parts in 100,000. This fact, together 
with the non-appearance of the same substance and of oth- 
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