120 HORTUS GRAMINEUS WOBURNENSIS. 



V. Sandy Loam, or Brompton Common Loam. 



400 grains, deprived of moisture, consisted of 

 Fine sand, partly siliceous and partly calca- 

 reous - 280 grains. 

 Carbonate of lime - - 4 

 Carbonate of magnesia - 1 

 Decomposing vegetable matter - 19 

 Silica - . - 53 

 Alumina, or matter of pure clay - 15 

 Oxide of iron - 4 

 Soluble matter, principally vegetable extract 

 and sulphate of potash - 4 

 Loss - - 20 



400 



Obs. This soil affords an illustration of the term loam, in its 

 general acceptation among husbandmen and gardeners in the 

 neighbourhood of London. 



VI. Rich Black Clayey Loam. 



400 grains of the entire soil consisted of 



Water of absorption - 65 grains. 



Fine sand - 165 



Carbonate of lime 20 



Vegetable matter - 39 



Silica - 61 



Alumina - 20 



Oxide of iron 5 



Soluble matter, saline and vegetable 4 



Loss - 21 



400 

 VII. Clayey Loam. 



400 grains, freed from moisture, gave of 



Fine sand, partly calcareous and partly sili- 

 ceous - .- 190 grains. 

 Carbonate of lime 8 



Carry forward 198 



