Absorptive Properties of Soils. 
511 
Experiment No. 37. 
Soil No. 7, after liming. 
First Analysis — 
Platinum Salt. Ammonia in 1000. 
1000 grs. distilled gave 0-G7 equal to 0'051 
Second Analysis — 
1000 grs. „ 0-69 0-052 
Mean of the two results 0-0515 
Experiment No. 38. 
Soil No. 7, limed and exposed to vapour of ammonia. 
First Analysis — 
Platinum Salt. Ammonia in 1000. 
300 grs. distilled gave 7'15 equal to r817 
Second Analysis — 
300 grs. „ 7-23 „ 1-837 
Mean of the two results 1- 827 
Experiment No. 39. 
Soil No, 7, exposed to vapour of ammonia without previous 
liming. 
First Analysis — 
Platinum Salt. Ammonia in 1000. 
300 grs. distilled gave 7-72 equal to 1*961 
Second Analysis — 
300 grs. 8-25 „ 2-896 
Mean of the two results 2-028 
The following numbers therefore represent this series : — 
1000 grs. soil in natural state contains 0-0830 
Ditto, after liming 0-051 
Ditto, after liming and exposure to vapour of ammonia .. .. 1-827 
Ditto, after exposure to ammonia without liming 2-028 
Another negative result is here presented, or rather it is 
evident tliat lime has neither assisted nor interfered with the 
absorption of ammonia, for the numbers are too nearly alike to 
allow of any inference being drawn from them. 
In order that the reader may compare the results obtained in 
the experiments now described, they may be collected together in 
a table, which is given on page 512. 
In the early part of tliis paper it was remarked that this 
investigation was anything but concluded, and that the results 
now given could only be regarded as an instalment. Under such 
circumstances it would be rash to give any decided opinion on 
this interesting question. Certain inferences may, however, 
safely and with advantage be drawn from the results already 
obtained. The first of these is one that is not entirely new 
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