144 TALKS OX MAXTJRKS. 



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 nitrogen, equal 

 t3 .46 of ammonia, in a second determination. 



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

 soil, it may be stated, chat 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). 



M Msture 18. 73 



Organic matter* 9.72 



Oxide of iron and alumina 13.24 



Carbonate of lime 8.82 



Magnesia, alkalies, etc 1.72 



Insoluble silicious matter, (chiefly clay) 47.77 



100.00 



* Containing nitrogen ....................................... 313 



Equal to ammonia ......................................... 380 



"The second square yard from the brow of the hill, where the 

 clover was bad, produced 13 ounces of air-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 ....................................................... 55.732 



Organic matter* .............................................. 39.408 



Mineral matter, (ash) ........................................ __ 4.860 



100.000 



* Containing nitrogen ..................................... 792 



Equal to ammonia ...................... ................. 901 



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

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

 quantity which was obtained from the roots where the clover was 

 good. 



" The soil from the second square yard, on analysis, was found, 

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



COMPOSITION OF SOIL, NO. 2. (BAD CLOVER)> 

 Water ......................................................... 17.24 



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 



mination. 

 *Containing nitrogen ............................ 306 .330 



Equal to ammonia ...... ........................ 370 .470 



