XVI CONTENTS. 



CHAPTER V. 



MANURES. 



History of using manures. First manure, animal and vegetable 

 refuse. A farm in ancient times returned to the field what 

 was taken away from it. A decrease in the outturn first 

 perceptible when the farmer exported his produce. Rota- 

 tion of crops forced upon the farmer by the declining 

 fertility of the soil. Fallowing the next step. The soil 

 ceases to be remunerative and requires rest. The rational 

 solution of the difficulty. The importation of manure as 

 an equivalent for the exportation of produce. Artificial 

 manures ; their use and abuse. Different manures for 

 different crops and soils. Special manures : their nature, 

 and relation to the soil. The disappointment which must 

 follow their indiscriminate use. Monetary waste in 

 supplying phosphoric acid to a soil already containing it 

 in abundance. An intimate knowledge of a soil necessary 

 in order to obtain the highest results by the smallest outlay. 

 Liebig on manures in their relation to crops and soils. 

 The Minimum Theory. An analysis necessary to point 

 out the Minimum 116 



CHAPTER VI. 



MANURES AVAILABLE IN INDIA. 



Mr. R. H. Elliot on the future prospects of agriculture in India, 

 the want of manure, and the degeneration of man and 

 animal. The fertility of a soil depends upon the quantity 

 of inorganic plant-food which it contains in physical 

 combination. The chief object of agriculture should be to 

 maintain this fertility. The progressive exhaustion of the 

 soil, under the present system of agriculture in India, 

 expressed in figures. Man and animal part of the soil. 



The total consumption of food-stuffs by the Indian subjects of 

 Great Britain. The ashes, or inorganic parts of these food- 

 stuffs, are to be found in human refuse. The welfare and 



