158 
in the order of the experiments by which they 
were procured. 
Thus, I obtained from 400 grains of a good sili- 
ceous sandy soil from a hop-garden near Tunbridge, 
Kent, GRAINS. 
Of water of absorption - - - 19 
Of loose stones and gravel principally sili- 
ceous - - - - 53 
Of undecompounded vegetable fibres - 14 
Of fine siliceous sand - 212 
Of minutely divided matter, separated by 
agitation and filtration, and consisting of 
Carbonate of lime - - - 19 
Carbonate of magnesia - 3 
Matter destructible by heat, principally 
vegetable - - - - 15 
Silica - - - - 21 
Alumina - - - 13 
Oxide of iron - - 5 
Soluble matter, principally common 
salt and vegetable extract - 3 
Gypsum - - 2 
— 81 
Amount of all the products 379 
Loss - - - 21 
The loss in this analysis is not more than usually 
occurs, and it depends upon the impossibility of 
collecting the whole quantities of the different 
precipitates ; and upon the presence of more 
moisture than is accounted for in the water of 
absorption, and which is lost in the different 
processes. 
