INTRODUCTION. 



Ixi 



III. Heath Soil, or Black Siliceous Moor Soil. 



^ 



400 grains, deprived of moisture, gave of 



Fine sand, principally siliceous 



>- 



Decomposing vegetable matter 

 Silica, or the earth of flints 

 Alumina, or the pure matter of clay 



Oxide of iron ' - " , - ~ - * _ _ - - . ^ 



Soluble matter, principally vegetable extract and common salt - ~ fi 



Loss -'-__ _ _ ^ 



^^0 grains. 

 65 



9 



2 



*-^ 



400 



r 



IV. Rich Siliceous Soil, or Rich Saiidy Soil 



■ J 



400 grains, deprived of moisture, afforded of 



Fme sand, chiefly siliceous and partly calcareous - ' . ^ ^ aha 



Coarse gravel 



Carbonate of lime, or chalk - 



Carbonate of magnesia - - - - ^ 



Decomposing vegetable matter destructable by fire 



Silica, or the earth of flints " - ' ^ ' 



Alumina, or the matter of pure clay - - ' - '. 



Oxide of iron - _" Z J - . . 



Soluble matter, consisting of vegetable extract and phosphate of lime 



Loss - ' ' _ 



grains, 



9 



1 



SO 



31 



8 



4 



4 



12 



400 



Ohs. 



This soil, when on a elayey suhsoii; produced' large crops for two successive 



seasons. 



but afterwards required a regular supply of manure, 

 of grave , the produce was very inferior. It is properly a hungry soil, and requires an addi- 

 tion ot clay, and calcareous earth, to render it permanently fertile. 



J ' ■ 



V. Sandy Loam, or Brgmpton Comrnon Loam: 

 400 grains, deprived of moisture, consisted of * " " " 



f 



i^ine sand, partly siliceous and partly calcareous - . - , oqa o-rmn. 



Carbonate of lime 



Carbonate of magnesia 

 Decomposing vegetable matter 

 Silica, or earth of flints 

 Alumina, or matter of pure clay 

 Oxide of iron 



k < ^t 



4 



'tX.^^ t 



19 



15 



4 



Soluble matter, principally vegetable extract and sulphate of potash - - 4 



* ^ 



IToss - - _ - - 20 



rfl 



400 



• is soil affords an illustration of the term loam, in its general acceptation amonff 

 husbandmen and a^r^.r....;„.u.^„:.i . , .. ' ^ ^ ^ 



and Gardeners in the neighbourhood of London. 



