TABLE OF CONTENTS. xv 



AGRICULTURE AND RURAL ECONOMY Continued, 



Composition of Plants Page 553 



Nitrogenous Constituents of Beets, Mangolds, and Potatoes 554 



Nitrogen Compounds in the Cereals 554 



Application in Estimating Feeding Values 554 



V. Manures and Vegetable Production 555 



Artificial Fertilizers 555 



Continuous UJse of Chemical Manures. Experiments of 



Messrs. Lawes & Gilbert 555 



Experience on the Farm of Mr. Prout, in England 556 



Experiment in Corn-growing by the Sturtevant Brothers 556 



Artificial Fertilizers in England 557 



Fertilizers for Root Crops 558 



Fertilizers for Grain Crops. Guano and Nitrate of Soda 558 



Manures for Permanent Pasture 559 



Potash Salts 559 



Common Salt 559 



Application of Farm-yard Manure 560 



Farm Experiments with Fertilizers 560 



Effects of the Different Fertilizing Materials. Artificial vs. 



Farm Fertilizers 561 



The Differences in Soils 562 



Principles respecting the Deficiencies of Soils 562 



Effects of the Fertilizers on Corn 562 



VI. The Nutrition of Domestic Animals 563 



Feeding Experiments 564 



Digestion of Foods by the Horse 564 



Source of Muscular Force 564 



Experiments at the New Hampshire Agricultural College 565 



Feeding Stuffs. Digestibility, Value, and Use 565 



Digestibility of Green and Dry Fodder ! . 565 



Maize vs. Oats for Horses. ... 565 



Ensilage 566 



Corn Fodder and Ensilage 567 



Miscellaneous 567 



Dairying 5G7 



The Sugar-beet Industry 568 



The Sugar-beet Enterprise in Maine 568 



The Sugar-beet in Virginia and North Carolina 569 



The Disposal of the Sewage of Cities 569 



Experience in England 569 



The Sewage of Paris 570 



ENGINEERING. By William H. Waul, Ph.D., Philadelphia, Pa 571 



The Jetty Works at the South Pass of the Mississippi 571 



The Sutro Tunnel 572 



