17 



Chapter XVI. Methods of tiUage. 

 XVII. Methods of tillage. 

 XVIII. Fertilizers — Methods and effects of action. 

 XIX. Fertilizers — ( 'lassiiication by constituents and form. 

 XX. 8oun-es and uses of nitrogen. 

 XXI. Sources and uses of phosphoric acid. 

 XXII. Sources and uses of potash. 



XXIII. Sources and uses of other amendments. 



XXIV. Practical advice on the use of commercial fertilizers. 

 XXV. Humus and green manuring. 



XXVI. Animal manures. General statements. 



XXVII. Manures produced from various animals. 



XXVIII. Care, preservation, and application of manure. 



XXIX. Waste and renovation of soils. 



XXX. Rotation of crop.s — (General statements. 



XXXI. Rotation of crops — Systems of farming. 



XXXII. Farm croi)S — Classification, production; reasons for choice. 



XXXIII. Improvement of farm crops. 



XXXIV. Wheat — Structure, composition, and varieties. 

 XXXV. AVheat — Culture, harvesting, and preservation. 



XXXVI. Wheaf^Obstructions to growth, preservation, and use. 

 XXXVII. Wheat — Production, marketing, history. 

 XXXVTII. C.rn. 

 XXXIX. Corn. 

 XL. Corn. 

 XLI. Corn. 

 XLII. Rice. 

 XLIII. Oats. 

 XLIV. Barley and rye. 

 XLV. Grasses. 

 XLVI. Grasses. 

 XLVII. Clovers. 

 XLVIII. Pastures. 

 XLIX. Silage. 



L. Forage t-rops. 

 LI. Potatoes. 

 LII. Potatoes. 



LIII. Root crops — Mangels, beets, turnips. 

 LIV. Sugar plants — Sugar beets. 

 LV. Sugar i)lants — Cane, sorghum, etc. 

 LVI. Fiber plants — Cotton. 

 LVII. Fiber plants— Cotton. 

 LVIII. Fiber j^lants — Flax, hemp, jute, ramie, sisal, etc. 

 LIX. Stimulants — Tobacco, tea, coffee. 

 LX. ^Medicinal and aromatic plants. 



LXI. Miscellaneous plants — Buckwheat, broom corn, peanuts, hops, canai- 

 gre, etc. 



[The order of discussion of the different crops will be the same as in the case of 

 wheat. The details to Ije given for each crop will vary with the importance of the 

 crop in any region.] 



26777— No. 127—03 2 



