Oil the Chemical Properties of Soils. 
ascertained by weighing, the amount of ammonia in it calculated, 
and 7000 grains of solution No. 1, containing 4"438 grains of 
ammonia added. 
The quantity of liquid left in the bottle was 2070 grains, and 
contained •298 grains of ammonia, the fresh quantity of 'stronger 
solution added 7000 grains, containing 4*438 grains. 
The total solution weighed i)070 grains, and contained 4*736 
grains of ammonia ; 1000 grains of this solution, therefore, 
contained '522 grains of ammonia. After* standing for four 
days, the liquid was drawn off and the strength determined as. 
before. This solution contained '320 grains of ammonia. 
Ammonia. 
Grains. 
Before contact with soil 1000 grains of solution contained •522 
After contact ,, ,, ,, .. '320 
•202 
Thus '202 grains of ammonia were removed from every 1000 
grains of solution. From the whole solution (weighing 9070 
grains) consequently 1 "83214 were removed and retained by the 
soil (1750 grains), which had already taken up 1"120 grains from 
the weaker solution. 
Ammonia. 
Grains. 
1000 gr.iinsof soil therefore absorbed in the 2nd Experiment 1*047 
And had previously absorbed *640 
1*687 
Or 1000 grains of soil absorbed from both solutions 1*687 grains 
of ammonia. 
In a similar manner the following experiments were made :■ — 
Experiment 6. 
There was added to the contents of the bottle used in Experi- 
ment No. 3, 5000 grains of solution No. 2, containing *304 grains 
ammonia in 1000 of liquid. 
Ammonia. 
Grains. 
Before contact with soil 1000 grains of the mixed solutions) 
contained J " 
After contact with soil 1000 grains of the solution contained -127 
*110 
Therefore *110 grains were removed from every 1000 grains of 
liquid, or *836 grains from entire solution, and retained by 1750 
grains of soil, which had already taken up *455 grains from the 
weaker solution. 1000 grains of soil therefore absorbed in 2nd 
Experiment *477 grains, in addition to *260 grains absorbed from 
the weaker solution, or from both solutions '737 grains of am- 
monia were removed and retained by 1000 grains of soil. 
