144 TALKS ON MANURES. 



gen in it determined in the usual manner, by combustion with soda- 

 lime, when it yielded .313 per cent of nitrogen, equal to .38 of 

 ammonia, in one combustion; and .373 per cent of nitro_; en, equal 

 to .46 of ammonia, in a second determination. 



" That the reader may have some idea of the character of this 

 soil, it may be stated, that it was further submitted to a general 

 analysis, according to which, it was found to have the following 

 composition : 

 GENERAL COMPOSITION OF SOIL, NO. 1. (GOOD CLOVER). 



Moisture 18.73 



Orijanic matter* 9.72 



Oxide of iron and alumina 13.'J4 



Carbonate of lime 8.82 



Magnesia, alkalies, etc 1.72 



Insoluble silicious matter, (chiefly clay) 47.77 



100.(10 



* Containing nitrogen 313 



Equal to ammonia 380 



"Tlie second square yard from the brow of the hill, wliere the 

 clover was bad, produced 13 ounces of ar-dry, and partially clean 

 roots, or 1.75 tons per acre. On analysis, they were found to have 

 the following composition : 



CLOVER-ROOTS, NO. 2. (BAD CLOVER). 



Water 5.5.733 



Oriranic matter* 39.408 



Mineral matter, (ash) 4.860 



~10 0.006 



* Containing nitrogen 793 



Equal to ammonia 901 



" The roots on the spot wliere the clover was very bad, yielded 

 only 31 lbs. of nitrogen per acre, or scarcely one-third of the 

 quantity wlucli was obtained from tlic roots where the clover was 

 good. 



" The soil from tlie second square yard, on analy.sis, was found, 

 when freed from stones by sifting, to contain in 100 parts: 

 COMPOSITION OF SOIL, NO. 3. (BAD CLOVER). 



Water 17.34 



Organic matter* 9.64 



Oxide of iron and alumina 11.89 



Carbonate of lime 14.50 



Magnesia, alkalies, etc 1.53 



Insoluble silicious matter 45.20 



100.00 



2d deter- 

 mination. 



* ContaininLr nitrogen .306 .380 



Equal to ammonia , 370 .470 



