24 



Wood's 7-7-7 Brand, No. 6S3. Nitrogen fovmd 6.51%, 

 guaranteed 7%; available phosphoric acid found S.07%, guar- 

 anteed 7%; potash found 7.12%, guaranteed 7%. 



Unmixed Fertilizers. 



Twenty-nine samples of ground bone have been an- 



Ground alyzed during the inspection of 1909. Eleven of the 



Bone. brands have been found deficient in phosphoric acid, 



and eight in nitrogen. Eight brands had a commercial 



shortage ranging from a few cents to S2.95 per ton. The average 



retail cash price for ground bone has been $30.39 per ton, the 



average valuation $20.09 and the percentage of difference 16.57. 



The brands showing a commercial shortage of 50 cents or over 



per ton are as follows : 



Armour Fertilizer Co.'s Bone Meal, Nos. 324-618-936. Nitro- 

 gen found 2.48%, guaranteed 2.47%; phosphoric acid found 

 22.24%, guaranteed 24%. 



Bowker Fertilizer Co.'s Ground Bone, Nos. 60-173-229-903- 

 947. Nitrogen fotmd 2.71%, guaranteed 2.47%; phosphoric 

 acid found 20.80%, guaranteed 22.80%. 



R. & J. Farquhar & Co.'s Ground Bone, No. 142. Nitrogen 

 found 2.19%, guaranteed 2.47% ; phosphoric acid found 21.50%, 

 guaranteed 22.80%. 



Thomas Hersom- & Co.'s Pure Bone Meal, No. 114. Nitrogen 

 found 2.64%, guaranteed 2.29% ; phosphoric acid found 25.08%, 

 guaranteed 28.00%. 



D. M. Moulton's Ground Bone, No. 792. Nitrogen found 

 4.26%, guaranteed 4.49%; phosphoric acid found 18.96%, 

 19.00%. 



A. L. Warrens Ground Bone, No. 625. Nitrogen found 

 2.14%, guaranteed 3.70%; phosphoric acid found 26.60%, 

 guaranteed 22.78%. 



Nine samples of tankage have been analyzed and show 



Ground the usual variations in composition. Only one brand 



Tankage, has shown a serious shortage in nitrogen and four 



have tested low in phosphoric acid. The average 



retail cash price per ton was $30.18, the average valuation per 



ton $29.86, and the percentage of difference 1.07. Nitrogen 



