CONTENTS. 



CHAPTER |. 



IMPORTANT PRELIMINARY OBSERVATIONS. (Page 11-31.) 



11, Importance of our work. 12, Two kinds of works on 

 farming. 13, 1st kind, and remarks 14, 2d kind, and re- 

 marks. 15, Operations of the farm may be intelligently per- 

 formed. 16, Farming may be made scientific Book knowledge 

 necessary. 17, Progress of other arts. 18, Terse, sayings 

 Negligence and indifference of farmers. 19, Effect of knowledge 

 What we intend to show. 20, Effect of this upon farmers- 

 Object of concentrated manures Remark. 21, Analyses of Dr. 

 Bruckner How samples were obtained Other fertilizers to be 

 examined Made manures a special study. 22, Secrecy and 

 frauds of manufacturers. 24, Lying circulars. 25, Detection 

 difficult Immense profits. 26, Object of book. 27, Necessity 

 of inspection. 28, Agricultural Department at Washington re- 

 miss. 29, All interested in agriculture. 30, Practical experi- 

 ments to be made. 



CHAPTER II. 



ELEMENTS OF MANURES AND PLANTS. (Page 31-77.) 



31, Definition of manure Two objects to be effected A per- 

 fect manure. 32, Loss of manures Materials abundant. 38, 

 Gaseous elements Elements with oxygen forming acids Bases 

 Alkalies Elements unite in definite proportions. 34, Defini- 



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