October, 1926] fertilizer ixspection, 1926 7 



PHOSPHOEIC ACID 



Soluble in water 050 1.00 



Reverted 045 0.90 



In fine bone and tankage, fish 040 0.80 



In coarse bone and tankage, sheep manure .030 0.60 



In cottonseed meal, castor pomace, etc 030 0.60 



Insoluble in mixed fertilizers 015 0.30 



POTASH 



As sulphate 045 0.90 



As muriate 040 0.80 



In sheep manure, organic vegetable com- 

 pounds, total in Avood ashes 030 0.60 



These values are not intended to represent retail 

 prices to the consumer as they do not include such items 

 of expense in, manufacture as mixing, bagging, freight, 

 commissions, overhead, etc. They are useful, however, 

 in comparing the commercial value guaranteed for any 

 particular brand with the value calculated from the 

 analysis. They are also useful in calculations to deter- 

 mine the grades of fertilizer in which the consumer pur- 

 chases the most plant food per dollar. 



RETAIL PRICE DIFFERENCES. 

 The table which follows gives the minimum, maximum 

 and average retail prices per ton of the formulas which 

 are represented in this year's inspection by two or more 

 brands. 



Minimum Maximum Average 



Formula Number of price price price 



Brands per ton per ton per ton 



1-9-4 3 $44.00 §50.00 §47.13 



2-8-2 8 35.00 50.00 42.25 



2-9-3 4 42.00 52.00 46.00 



2-] 2-4 3 45.00 52.00 47.67 



3-8-4 8 40.00 56.00 47.13 



3-12-3 2 38.20 45.00 41.60 



4-fi-lO 9 48.00 57.00 53.11 



4-8-4 10 40.00 70.00 51.30 



4-8-7 5 50.00 56.00 53.20 



4-8-10 3 44.00 60.00 51.33 



5-8-7 8 44.80 75.00 53.23 



7-6-5 5 60.00 78.00 67.00 



The wide differences between maximum amd minimum 

 prices are not due to the difference in freight rates to dif- 

 ferent points. In many instances the extremes were 

 found in nearbv localities. 



