26 



Ashes, No. 383. Phosphoric acid found 1.56%, guaranteed 

 1% ; potash found 4.10%, guaranteed 5%. 



Sulphate Three samples of sulphate of ammonia have been 

 of analyzed and found well up to the guarantee. The 



Ammonia, average cost of nitrogen per pound in this form has 

 been 17.53 cents. 



Thirteen samples of nitrate of soda have been analyzed 



Nitrate and only two were found deficient in nitrogen. The 



of average cost of nitrogen per pound in this form has 



Soda, been 17.11 cents. Two samples were found to have 



a commercial shortage of over 50 cents per ton. They 



were as follows: 



Lister's Agricultural Chemical Works Nitrate of Soda, No. 

 674. Nitrogen found 15.40%, guaranteed 15.66%. 



National Fertilizer Co.'s Chittenden's Nitrate of Soda, No. 

 474. Nitrogen found 14.90%, guaranteed 15.50%. 



Two samples of this material were examined and both 

 Dried were found deficient in nitrogen. They both con- 

 Blood, tained sufficient phosphoric acid, however, so that 

 there was no commercial shortage. The average cost 

 of nitrogen from blood has been 25.57 cents per pound. 



Castor Four samples of castor pomace have been analyzed. 

 Pomace. One sample only was found deficient in nitrogen. 



The Olds & Whipple's Castor Pomace, No. 7. Nitrogen 

 found 4.38%, guaranteed 5%. 



The average cost of nitrogen in this form has been 23.67 

 cents per pound. 



Linseed Three samples of flax meal have been tested and the 

 Meal. nitrogen guarantee has been maintained in each in- 

 stance. The nitrogen from this source has cost on the 

 average 26.47 cents per pound. 



Forty-three samples of cottonseed meal have been 

 Cottonseed examined, the same being licensed by si.x companies 

 Meal. doing business in Massachusetts during the past 

 year. This material, like castor pomace and linseed 

 meal, is bought largely as a nitrogen source for tobacco. Nitro- 

 gen from cottonseed meal has cost on the average 23.61 cents 

 per pound. Seventeen out of the forty-three samples analyzed 

 show a nitrogen shortage ranging in value from a few cents up 

 to $2.39 cents per ton. The samples showing a deficiency 

 amounting to 50 cents or more per ton are as follows: 



American Cotton Oil Co.'s Cottonseed Meal, No. 835. Nitro- 

 gen found 6.16%, guaranteed 6.50%. 



F. W. Erode & Co.'s Cottonseed Meal, No. 709. Nitrogen 

 found 6.34%, guaranteed 6.50%. 



