17 



Dried Blood. Six samples of dried blood, representing four 

 brands, have been inspected. Six analyses were made and all were 

 found to be well up to the guarantee. Dried blood has cost, on the 

 average, $56.67 per ton. The average per cent of nitrogen found in 

 this product has been 11.08, 77.34 per cent of which was found 

 active. The average per cent of phosphoric acid was 2.15, the highest 

 amount found being 7.25 per cent. No statement of guarantee is 

 made of this ingredient. The average pound cost of nitrogen from 

 blood has been 25.6 cents. 



Calcium Cyanamid. Eight samples, representing three analyses, 

 were inspected. The average total nitrogen has been 16.71 per 

 cent; 15.92 per cent of this was found soluble and .79 per cent insol- 

 uble in water. The water insoluble portion was found highly avail- 

 able by the laboratory method (66.07 per cent active). The average 

 ton price has been $68.18, making the pound cost of nitrogen 20.4 

 cents. Only one sample showed a low nitrogen test, No. 1263, — 

 nitrogen found 15.34 per cent, guaranteed 16.00 per cent. All cyan- 

 amid sales were made on a unit price of nitrogen, subject to the ex- 

 periment station test. 



Castor Pomace. Ten samples were analyzed, representing two 

 brands. The nitrogen guarantee was well maintained in all cases. 

 The cash price per ton of this material has been $29.92. The average 

 per cent of nitrogen found was 5.65 per cent, and the pound cost of 

 nitrogen was 26.5 cents. 



Cottonseed Meal. Eighty-four samples of cottonseed meal, 

 representing as many carloads, have been inspected, the product 

 being purchased in large quantities as a nitrogen source in fertilizers 

 for tobacco. Cottonseed meal has cost on the average $36.62 per 

 ton. The average per cent of nitrogen found has been 6.22, and the 

 average pound cost of nitrogen has been 29.4 cents, not allowing 

 for the value of the potash and phosphoric acid which the average 

 meal will carry, which may be around $7.00 to $7.50 per ton at present 

 prices. Much of the cottonsee.d meal this year has been sold on the 

 so-called "basis price", which means that rebates will be allowed 

 for nitrogen deficiencies, and over-runs are to be paid for on the 

 same basis, a unit price for ammonia or nitrogen being named. 

 It is felt that this is a fair way to conduct the trade for both shipper 

 and purchaser, provided representative samples are always drawn 

 and analyzed from each car upon arrival at its destination. 



Thirty samples have shown commercial shortages. In calcu- 

 lating these commercial shortages, the value of the other two ele- 

 ments of plant food, — potash and phosphoric acid, — have not been 

 taken into consideration, except in case of the Union Seed & Fertil- 

 izer Company's product. This company makes a guaranty of all 



