« 



No. 105.] 509 



Consisting of potash, soda, azotized body as N. H. with no trace of 

 lime, phosphoric or sulphuric acid. The cause of sterility is the evi- 

 dent want of lime, the phosphates and sulphates, without which no 

 crop can be raised. 



Improved soil — mould and limb added. 



Its mechanical texture is a loam — 60 per cent of sand. 



It consists of water, 5 per cent. 



Organic matter, 5 do. 



Carbonate and other salts, 6 do. 



Lime, sand, clay and other minerals, 84 do. 



100 parts. 



Organic matter — 



Soluble manures, 3 per cent. 



Insoluble do 2 do. 



5 as above. 



Mineral matter — 



Soluble, 6 per cent ; consisting of potash, soda, lime, N. H., and 

 phosphoric acid. 



It is still wanting in some of the valuable mineral substances. But 

 I think it is very probable that sulphuric acid is present, though in 

 such sipaall proportion, that it cannot be correctly determined by ana- 

 lysis. Of magnesia and the metallic oxides, which are absent, their 

 place may be supplied by those ingredients present. Lime is found 

 to do in the place of magnesia, while alumina is found to be a substi- 

 tute for the oxides. 



Swamp muck or mould. 



Consists of water, , 30 per cent. 



Organic matter, 37 do. 



Mineral do 33 do. 



100 parts. 



Its organic matter has of — 



Soluble manures, 23 per cent. 



Insoluble do 14 do. 



37 as above. 



Its saline or mineral matter consists of — 



Soluble, .* 2 J percent. 



Insoluble, 30 si do. 



33 as above. 



