78 
which had grown in the granitic soil, contained most water ; but that 
the proportion of charcoal was nearly alike in those of each soil. 
The quantity, however, and proportion of the earths which he found 
they contained, corresponded, very nearly, with the contents of the 
respective soils : thus the trees which grew in the granitic soil, 
abounded in silica, and contained metallic oxides ; whilst those 
which grew in the calcareous soil, contained no metallic oxide, but 
a considerable proportion of lime. This, however, will appear more 
obvious by the following tabular representation of the results of 
his experiments, made with the pinus ahies. 
Analysis demonstrated the contents of the two soils, and the con- 
stituent parts of the pinus ahies in the different soils, to be as 
follows : 
Analysis of the Granitic Soil. 
73.25 Silica 
13.25 Alumine 
1,74 Lime 
9,00 Iron and manganese 
97,24 
Analysis of the Calcareous Soil. 
98,000 Carbonate of lime 
0,625 Alumine 
0,625 Oxide of iron 
0,025 Petrolium 
99,275 
Analysis of the Fixed Substances contained 
in the Pinus Abies, growing in the Gra- 
nitic Soil 
13,49 Silica 
14,86 Alumine 
46,34 Carbonate of lime 
10,52 Metallic oxides 
3,60 Pot-ash 
4,24 Alkaline sulphates and muriates 
0,77 Carbonate of magnesia 
99,82 
Of the Fixed Substances contained in the Pi- 
nus Abies, growing in the Calcareous Soil. 
63 Carbonate of lime 
16 Alumine 
15 Alkalies and alkaline sulphates and 
muriates 
94 
The absorption of earths, metallic oxides, and various saline sub- 
stances, for the accomplishment of important purposes, in the vege- 
