( 56 ) 



of water, and is used in the proportion of 1260 

 to 2320 pounds per acre. This manure being 

 rapidly decomposed, is consequently of only 

 limited durability. 



* Tangue, the seaside sand, constitutes the 

 soil of the seaside shores in many localities in 

 the vicinity of Morlaix. It should be washed 

 to remove the greater portion of its salt. The 

 little of animal matter which it contains is 

 dissipated, by putrefaction, when too long ex- 

 posed to air. Hence the established distinc- 

 tion between live and dead Tangue; the lat- 

 ter being evidently the least nitrogenous of 

 the two. 



RoscofT's dried Tangue contains 0.14 per 

 ct. of nitrogen, and is applied in the propor- 

 tion of one and a half tons per acre. 



Products of the Combustion of Plants. 

 Soot. Soot is used in large quantities by far- 

 mers, and is a good manure. According to 

 Braconnot, the soot of a wood fire chimney 

 consists of : 



Ulniic Acid, 30.00 



Nitrogenous matter soluble in water, 20.00 

 Insoluble Carbonated matter, 3.9 



Silica, 1.0 



♦ Tangue, literally sea sand. 



