42 



CONTROL SERIES No. 54 



I 



Raw Products Supplying Nitrogen and Phosphoric Acid. 



Dry Ground Fish. 



Brand Showing a Commercial Shortage of II or More per Ton. 



Apothecaries Hall Co. 



2b 



8,20 



5.00 



a Two other samples showed a commercial shortage of over .SI per ton. 



b Two analyses. 



c The samples contained 6.28% and 6.87% chlorine, respectively. One of the samples con- 

 tained 7.18% sodium oxide, equivalent to 13.54% common salt; potassium oxide, .79';,; fat, 

 10.67%,. Commercial shortages, $5.25 and $1.99. 



Animal Tankage. 



Brand Showing a Commercial Shortage of $1 or More per Ton. 



Berkshire Chemical Co. 



5.44 7.40 



9.64 



6.86 



a Two analyses. 



b The product proved to be a mixed fertilizer of the grade 6-8-4. The manufacturer offei s the 

 explanation that this small amount of tankage, about one-half ton, must have been milled in a 

 machine previously used in milling a mixed fertilizer and not properly cleaned before milling the 

 tankage. A proper rebate was promptly paid the purchaser. The material showed a commercial 

 deficiency of .'$11.63 per ton. 



