498 
The Iiijluence of Lime on the 
Second Analysis — 
Carbonate of Lime. Lime. 
1500 grs. gave 0 ()4 equal to 0-240 in 1000 grs. 
Mean of the two Analyses 0'2415 ,, 
Equal to G*762 prrs. lime in 28,000 grs. liquid. 
Lime in 28,000 grs. original lime-water 27 -910 
Ditto after 48 hours' digestion with the soil 6*762 
Absorption by 2000 grs. soil 21 • 154 
Or 10-577 by 1000 grs. of the soil. 
It thus seems that at four different periods the soil has removed 
from solution — 
In 1 hour 9 '254 lime by 1000 grs. soil. 
In 2 hours 10-045 ,, 
In 24 ,, 10-038 ,, 
In 48 „ 10-577 
The determination of the lime in the case of the 24 hours' 
digestion is not very satisfactory, inasmuch as the Analyses did 
not very well agree — a circumstance which was learnt too late 
for a remedy. It may fairly be assumed that tlie number is pro- 
perly intermediate between those above and below it, and we 
have consequently, in the case of this soil, a progressive absorp- 
tion of lime due to a longer digestion of tlie soil in the lime- 
water ; still the amount of difference is not great, inasmuch as, 
after 48 hours, the extra quantity of lime absorbed is only l-9th 
of that absorbed within the first hour. 
We will now pass on to the other soils. • 
Soil No. 15 — Top soil of the London Clay — 
28,000 ers. litne-water. 
2,000 grs. soil. 
Experiment No. 5. 
A quantity drawn off after 1 hour's digestion. 
First Analysis — 
Carbonate of Lime. 
1500 grs. gave 1-63 cqualjto 0-608 lime in 1000. 
Second Analysis— 
1500 grs. ,, 1-65 ,, 0-616 „ 
Mean of the two Analyses 0-612 
Equal to 17-136 in 28,000 grs. of li(|ui(l. 
Lime in the original 28.000 grs. lime-water 27-916 
Ditto alter 1 hour's digestion with the soil .. .. 17-13G 
Absorption by 2000 grs. soil 10 '780 
Or an absorption of 5.390 by 1000 grs. soil. 
Experiment No. 6. 
A second c^uantity drawn off after 2 hours' digestion. 
