Cereals 493 Especially benefited by nitrogenous manures 494 Power of absorbing silicates 494 Barley 495 Period of growth 495 Most suitable soil 496 Farmyard manure not suitable 497 Importance of uniform manuring of barley 497 Norfolk experiments on barley 497 Proportion of grain to straw 498 Wheat 499 Rothamsted experiments 500 Continuous growth 500 Flitcham experiments 500 Oats 501 A very hardy crop 502 Require mixed nitrogenous manuring 502 Arendt's experiments 503 Avenine 503 Quantities of manures 504 Grass 504 Effect of manures on herbage of pastures 505 Influence of farmyard manure 506 Influence of soil and season on pastures 507 Manuring of meadow land 508 Bangor experiments 508 Norfolk experiments 509 Manuring of permanent pastures 509 Roots 510 Influence of manure on composition 512 Nitrogenous manures increase sugar 512 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