LIST OF ILLUSTRATIONS xix 



DIAGRAMS IN THE TEXT continued. 



PAG a 

 FIG. 37. Percentage of Trifolium repens, Trifolium pratense, and Lotus 



corniculatus (together) in the Herbage of the Grass Plots . ^182 



38. Percentage of Latkyrus pratensis in the Herbage of the 



Grass Plots ...... 184 



)} 39. Percentage of Centaurea nigra in the Herbage of the Grass 



Plots . . . ... .186 



40. Percentage of Rumex acetosa in the Herbage of the Grass 



Plots . . . . ' . .188 



41. Crops grown in Rotation. Maintenance of yield without 



Manure ....... 193 



42. Effect of Manure upon Crops grown in Rotation . . 199 



43. Comparative Effect of Clover or Bare Fallow on the succeed- 

 ing Crops in the Rotation ..... 204 



44. Effect of Feeding or Carting the Root Crop on the succeed- 

 ing Crops in the Rotation ..... 208 



45. Rainfall, Percolation, and Nitrogen as Nitrate in Drainage 



through 20 inches of Soil ..... 230 



46. Dry Matter and Nitrogenous Substance consumed per 100 Ib. 



Live-weight per week. Pigs .... 243 



47. Nitrogenous and Non-nitrogenous Matter in Food required 



to produce 100 Ib. Live- weight Increase. Pigs . . 244 



48. Percentage Composition of the Whole Bodies of Oxen, Sheep, 



and Pigs ....... 250 



49. Oxen, Sheep, and Pigs. Composition of Increase in 



Fattening ....... 253 



