Manure on Dairy Farms.-- Wheat removes much more Nitrogen than Cheese.-- Manures for Dairy Farms.-- Letter from Hon. Harris Lewis.-- How to make more and better Manure on Dairy Farms.-- How to save and apply it.-- Letter from T. L. Harison, Esq. 101 CHAPTER XXIII. Management of Manures on Grain Farms.-- Letter from Hon. Geo. Geddes.-- Grain on Dairy Farms.-- Sheep on Grain Farms.-- Visit to John Johnston.-- Mr. Lawes’ Wheat-field.-- Mr. Geddes and Clover.-- Gypsum and Clover as Manures. 111 CHAPTER XXIV. The Cheapest Manure a Farmer can use.-- Clover vs. Tillage.-- As Plant-Food.-- Constituents of a Crop of Clover, as compared with one of Wheat.-- Making a Farm Rich by Growing Clover. 127 CHAPTER XXV. Dr. Vœlcker’s Experiments on Clover.-- Lawes and Gilbert’s on Wheat.-- Clover Roots per Acre.-- Manures for Wheat.-- Liebig’s Manure Theory.-- Peruvian Guano on Wheat.-- Manures and the Quality of Wheat.-- Ammonia.-- Over 50 Bushels of Wheat to the Acre. 135 CHAPTER XXVI. Experiments on Clover Soils from Burcott Lodge Farm, Leighton Buzzard.-- Soil from Part of 11-acre Field twice Mown for Hay.-- Soil from do. once Mown for Hay and left for Seed.-- Amount of Roots left in the Soil by different Crops.-- Manures for Wheat. 149 CHAPTER XXVII. Lawes and Gilbert’s Experiments on Wheat.-- Most Valuable and Instructive Tables now first made accessible to the American Farmer.-- The growth of Wheat Year after Year on the same Land, unmanured, with Farm-yard Manure, and with various Organic and Inorganic Fertilizers. 170 CHAPTER XXVIII. Lime as a Manure.-- Prof. Way’s Experiments.-- The uses of Lime in the Soil.-- Lime in this Country.-- Composts with Lime. 215 CHAPTER XXIX. Manures for Barley.-- Composition of Barley, grain and straw.-- Valuable Tables giving the Results of Lawes and Gilbert’s Experiments on the growth of Barley, Year after Year, on the same Land, without Manure, and with different kinds of Manure.-- Manure and Rotation of Crops. 227 CHAPTER XXX. Manures for Oats.-- Experiments at Rothamsted.-- Experiments of Mr. Bath of Virginia.-- At Moreton Farm. 252 CHAPTER XXXI. Manures for Potatoes.-- Peruvian Guano for Potatoes.-- Manure from different Foods.-- Experiments at Moreton Farm.-- Mr. Hunter’s Experiments. 255 CHAPTER XXXII. What Crops should Manure be Applied to?-- How, and When?-- John J. Thomas’ manner of Applying Manure.-- Top Dressing.-- Doct. Vœlcker’s Experiments. 265 CHAPTER XXXIII. Manures on Permanent Meadows and Pastures.-- Experiments at Rothamsted. 271 CHAPTER XXXIV.