96 FERTILIZERS. 



Lbs. 



Acid phosphate 727 450 = 277 



Sulphate of ammonia ....... 88 



Unleached wood ashes 950 



Dried blood 133 



1,448 



We have for our formula, which called for 1,000 pounds 

 of a fertilizer containing ammonia, 6 per cent, potash, 8 

 per cent, and phosphoric acid, 8 per cent, a compound 

 containing 1,448 pounds. I know that the question will at 

 once occur to my farmer friends, How can this be correct, 

 as only 1,000 pounds were called for? True, but that was 

 to be of a given strength, while the elements in this will 

 not average as rich as the elements in that, and therefore 

 more bulk is required. If, instead of taking the ashes, we 

 had taken our entire supply of potash from the muriate, 

 then the result would have been a compound weighing 

 less than 1,000 pounds, for the reason that the average of 

 the materials would have been richer. This illustration, 

 which I have purposely made to cover about all possible 

 variations, covers the whole matter of compounding our 

 own formulas. What we now need to ascertain is, where 

 we can get our own raw materials the cheapest. The 

 various facts presented in other portions of this treatise, 

 especially under the heads of " Potash," " Nitrogen," and 

 " Phosphoric Acid," with the tables to be found on pp. 

 Ill and 112, will inform us from what source to obtain 

 the cheapest materials needed to compound these or any 

 other formulas. 



SOME FORMULAS AS COMPOUNDED 



I herewith present the way I have compounded several 

 formulas for my own use, not as the wisest course in the 

 selection of material, but as suggestive in the variety of 



