HOME MIXED FERTILIZERS. 



133 



calculated composition and that found is given in the following 

 table : 



COMPOSITION OF A HOME MIXED ^POTATO FERTILIZER/' CAL- 

 CULATED PROM THE MATERIALS USED, COMPARED WITH THE 

 COMPOSITION OF THE MIXED GOODS AS FOUND BY CHEMICAL 

 ANALYSIS. 



Nitrogen, 

 per cent. 



Phosphoric 

 acid, 

 per cent. 



Potash, 

 per cent. 



Calculated 

 Found 



4.00 

 3.91 



11.30 

 11.02 



7.33 

 7.33 



This agreement between "calculated" and found" is closer 

 than could always be expected, for it is indeed inside of the limits 

 of errors in chemical analysis. 



To see what would be the result if the sample of the ingredi- 

 ents were taken from unscreeneed goods in large lots, and ship- 

 pers' weights assumed as correct, the following results were 

 obtained in mixing by men without previous experience. 



COMPOSITION OF A HOME MIXED "POTATO FERTILIZER" MADE 

 FROM MANUFACTURERS' WEIGHTS OF GOODS, CALCULATED FROM 

 THE ANALYSIS OF SAMPLES TAKEN AT RANDOM FROM THE 

 STOCK OF CHEMICALS, COMPARED WITH THE COMPOSITION 

 OF THE MIXED GOODS AS FOUND BY CHEMICAL ANALYSIS. 





Nitrogen, 

 per cent. 



Phosphoric 



acid, 

 per cent. 



Potash, 

 per cent. 





4.3 

 4.1 



10.2 



9.9 , 



7.3 





7.6 







While these results do not agree nearly as well as in the case 

 of the more carefully weighed and sampled goods, they run as 

 close as many of the ready mixed goods sold in the State do to 

 their guarantees. 



The mechanical condition of these goods was excellent. They 

 were used in the potato planter, and even in the old type Rob- 

 bin's planter the fertilizer was distributed as freely and evenly 

 as could be asked. The cottonseed meal and tankage were so 

 dry that the use of a filler was unnecessary. 

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