S8 ' 



acute chemist, recommended by Professor Phillips. The 

 samples were taken from the same field, about ten yards apart, 

 being upon the lower bed of the Magnesian Limestone. 

 This field is sixteen acres in extent, one half of which had 

 been seeds (i, e,, white clover and rye grass), and the other 

 half, beans four years ago ; the whole of it, last year, was 

 barley and red clover ; and both portions of the field had pre- 

 viously been under the same management with respect to crops 

 and manures. After harvest, the whole of the clover was 

 equally good, but during the months from Nov. to the 5th April, 

 the clover had, I may say, totally disappeared from the portion 

 which had four years before been " seeds," except upon the 

 headlands where the horses had turned round in the plough- 

 ing. Upon the portion which had been beans four years ago, 

 the red clover continued excellent until it was mown, but the 

 other half not being worth keeping, was ploughed up and sown 

 with beans. 



SOIL OF THE SOIL OF THE 



Mechanical Analysis. sicK clover. good red clover. 



Deposit in 3^ minutes 90 90^ 



Remainder 10 9^ 



100 100 

 Chemical Analysis. Chemical Analysis. 



Water of Absorption 4.5 4.5 



Water not expelled at 300°, and ) o ^ 35 

 matter destructible by heat ) 



Sit sX™ 1 "-^^ - 



Vegetable matter (soluble) 0.10 0.10 



Siliceous sand, insoluble in Hydro-) on e rrn ka kk 



chloric and Sulph. Acids.... \ ^^'^ ^^'^^ " '^^ 



Alumina 4.6 4.8 — .2 



Oxide Iron 4.65 5.3 — .35 



Carbonate Lime 1.25 1.15 — .1 



Carbonate Magnesia 0.25 0.45 + -2 



Phosp. Lime (Phosp. Acid 0.67) 0.15 (Phs. Acd. 0.9) 0.2 + -05 

 Potash (silicate) (Potash 0.17) ... 0.35 ( Potash 0.2 ) 0.4 + 05 



100 100 

 An acre of red clover contains of potash 45 lbs., soda 12 lbs., lime 63 lbs., 

 magnesia 7-5 lbs., alumina 0.3 lbs., silica 8 lbs., sulph. acid 10 lbs., phosphoric 

 acid 15 lbs., chlorine 8 lbs. f Lectures on Agricultural Chemistry, by J. F. W. 

 Johnston, p. 326.) 



