FORAGE CROPS. 0(55 



or, in round numbers, 2 tons 6 cwts. of nitrogen per acre, 

 an enormous quantity, which must have a powerful influence in 

 encouraging the luxuriant development of the succeeding wheat- 

 crop, although only a fraction of the total amount of nitrogen in 

 the clover-remains may become sufficiently decomposed in time 

 to be available to the young wheat-plants. 



" Clover-soil from part of I l-acre field of Burcott Lodge Farm^ 

 Leighton-Buzz.ard^ once mown for hay^ and left afterward for 

 seed. 



" Produce 2^ tons of clover-hay and 3 cwts. of seed per acre. 



•■' This soil was obtained within a distance of 5 yards from the 

 part of the field where the soil was dug up after the two cuttings 

 of hay. After the seed there was some difficulty in finding a 

 square foot containing the same number of large clover-roots as 

 that on the part of the field twice mown ; however, at last, in the 

 beginning of November, a square foot containing exactly 18 strong 

 roots was found and dug up to a depth of 18 inches. The soil 

 dug after the seed was much drier than that dug after the two 

 cuttings of hay : — 



lbs. 



The upper, 6 inches deep, i foot square, weighed 56 



The next, " " " 58 



The third, « " " 60 



"After drying by exposure to hot air, the three layers of soil 

 weighed : — 



lbs. 



The upper 6 inches i foot square 49^ 



The next " " 5o| 



The third « " 5 1 i^ 



"Equal portions of the dried soil from each 6-inch section were 

 mixed together and reduced to a fine powder. An average 

 sample thus prepared, on analysis was found to have the following 

 composition : — 





