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decomposes; cut at the time of blossoming; 

 and dried on the place, such as we find it in 

 commercej it still retains 0.20 of water, and 

 0.75 Nitrogen; completely dried, it gives 

 1,10 of its weight ashes and 1.06 78 per ct. 

 Nitrogen. Rendered, by maceration, to the 

 same state of moisture as dung, it contains 

 0.267 Nitrogen. It is used for manuring the 

 base of olive trees, and prolongs its effects 

 through two years. 



Ferjis. Among other plants used for fer- 

 tilizing the soil are the ferns. Their propor- 

 tion of Nitrogen has not been rated, but they 

 contain a notable quantity of potassa which is 

 very advantageous to soils deficient in that 

 alkali. 



Heath. This, like the preceding, is also 

 useful in agriculture. The leaves contain 1.74 

 Nitrogen, but the stems are much poorer and 

 more valuable as fuel than as manure. 



Box. Box, as a manure, is a valuable 

 resource in countries bordering calcareous 

 mountains, upon which it grows abundantly. 

 The leaved branches, after having been trod- 

 den under feet and crushed by horses and 

 wheels, ferment very readily. In the green 



