INTRODUCTION. 



Ixiii 



IX. Rich Alluvial Soil, partly formed by the Deposition ofjlowing Water. 



400 grains deprived of moisture, gave of 



Fine sand ' - " -" 



Aluminous stones _ " _ " - 



Carbonate of lime - - 



115 grains. 

 70 



'* 



23 



Decomposing vegetable and animal matter - ■"-■•- 34 



Silica 



Alumina . 

 Oxide of iron " 



■f 



Sulphate of lime or gypsum 



Carbonate of lime 



Soluble vegetable and saline matters 



100 

 28 

 ]3 



2 



Loss 



7 



8 



400 



Obs. Of all the soils employed in the experiments, this one was the most productive : it was 

 upon a porous suhsoil; all the superior grasses flourished here in an extraordinary degree : it 

 therefore offers data whereby to judge of the comparative value of soils for grasses. 



X. Vegetable Mould. 



400 grains^ freed from moisture, gave of 



Fine sand . ^ , 



TJndecompounded vegetable fibre 

 Decomposing vegetable fibre 

 Silica - - - - 



Alumina _ . _ _ 



Soluble matter, principally vegetable extract 

 Oxide of iron - - _ 



231 grains. 

 13 



57 

 50 



18 



4 



2 



Loss - - - - - 25 



400 



XI. Active Peat, or Fertile Peat Moss. 



400 grains, freed from moisture, gave of 



Fine siliceous sand 



Undecompounded vegetable fibre 

 Decomposing vegetable matter 

 Muriate of lime 

 Silica " - . 



Alumina 



Oxide of iron 



Soluble vegetable and saline matter 



- 156 grains. 



2 



110 



- - . . 4 



- 102 



16 



- . - . - 4 



- - . - 4 



Loss - - - - - 2 



400 



