CONTENTS. xxix 



Amount of nitrogen recovered in increase of crop . .513 



Norfolk experiments 513 



Manure for swedes . . . . . . .514 



Highland Society's experiments 515 



Manuring for rich crops of turnips . . . .516 

 Experiments by the author on turnips . . . .516 



Potatoes 517 



Highland Society's experiments . . . . .518 



The Rothamsted experiments . . . . . .519 



Effect of farmyard manure ..... 520 



Manuring of potatoes in Jersey 521 



The influence of manure on the composition . . 521 

 Leguminous crops ......... 522 



Leguminous plants benefit by potash .... 523 



Nitrogenous manures may be hurtful .... 523 



Clover sickness ........ 524 



Alternate wheat and bean rotation ..... 524 



Beans . . .525 



Manure for beans ....... 525 



Relative value of manurial ingredients . . ' . 526 

 Gypsum as a bean manure ...... 526 



Effect of manure on composition of crop . . . 527 



Peas 527 



Hops 528 



Cabbages 528 



APPENDIX TO CHAPTER XXIII. 



Experiments on bean-manuring . . . . . 530 



CHAPTER XXIV. ON THE METHOD OF APPLICATION, 

 AND ON THE MIXING OF MANURES." 



Equal distribution of manures ....... 531 



Mixing manures ......... 532 



Risks of loss in mixtures ........ 533 



Loss of ammonia ........ 533 



Effects of lime on ammonia . . . . . .535 



Loss of nitric acid ........ 536 



Reversion of phosphates . . . . . . .537 



Manurial ingredients should be applied separately . . . 538 



