APPENDIX. 



PEACTICE AND DOCTRINE. 

 FORMULAE OF FERTILIZERS. 



TO facilitate research and comparison, I unite in this Appendix the 

 formulae of rotation and fertilizers under consideration in the 

 course of these lectures. 



I cannot but repeat, since my experiments have passed from the 

 domain of science to that of practice, that I have found great advan- 

 tage to be gained by the use of chemical fertilizers in fractional 

 quantities. The division of the fertilizers has, over manuring all at 

 once, the double advantage of causing less expense the first year, and 

 producing larger returns. 



The following formulae have been fixed according to this new 

 method of application. 



I have considered here, as in the lectures, two distinct cases the 

 one where the chemical fertilizers are used alone, to the exclusion of 

 manure, and the other where they are associated with it under the 

 title of supplementary fertilizers, whether we have to do with isolated 

 culture or culture by rotation. 



FIKST CASE. 



Here the chemical fertilizers are employed alone, to the exclusion 

 of manure. 



ISOLATED CULTURES. 



Wheat. 

 Complete fertilizer No. 1, 1066 Ibs. 



Composition : Quantity. Price. 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 177 " 10.47 



Sulphate of ammonia 222 " 9.50 



Sulphate of lime 312 " .59 



Whole 1066 Ibs. Cost... $25.96 



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