10 BULLETIN 1m, U. S. DEPARTMENT OF AGRICULTURE. 



indicated. Dried blood and raw and dried bones were the otber 

 important items. The amount of hair, hoof, and horns, and meat 

 scrap was not very large. 



Of the 503 firms from which reports were received, 386 reported 

 sufficient data on the purposes for which their products were used 

 to make a tabulation possible. While less than four-fifths of the 

 firms reported that information, the quantities for which they 

 reported were a very large proportion of the total. In some cases 

 the amount marketed was somewhat greater than the amount 

 produced, which probably means that an additional amount was sold 

 from stock. About 57 per cent of the high-grade animal tankage 

 was marketed as fertilizer and about 43 per cent as feed. If these 

 percentages are representative, they indicate one of the reasons that 

 animal ammoniates were difficult to secure during the year 1918. 

 Of the low-grade tankage, however, 89.5 per cent was marketed as 

 fertilizer, while of the concentrated tankage nearly two-thirds was 

 so marketed, and of the garbage tankage the entire amount was 

 disposed of as fertilizer. In the case of dried blood, more than four- 

 fifths was marketed as fertilizer, and of the raw bones even a higher 

 proportion, while of the dried bones nearly the entire amount was 

 used as fertilizer, and of the hoofs and horns seven-eighths. About 

 two-fifths of the hair was used as fertilizer, the remainder being 

 used for purposes other than fertilizer or feed. The meat scrap 

 was practically all used for feed. 



A special investigation was conducted by the Food Administra- 

 tion, in cooperation with the Office of Fertilizer Control, covering 

 all the reduction plants, municipal or otherwise. According to 

 the returns of that investigation, which were very complete, these 

 plants produced, in 1917, 168,000 tons of garbage tankage, and 

 in 1918, 159,000 tons. The recovery per ton of garbage was 262 

 pounds of tankage in 1917 and 286 pounds in 1918. 



Cottonseed meal. — In connection with cottonseed meal, an inquiry 

 was made from all the mills that manufacture cottonseed oil and 

 meal as to the amount produced during the fiscal year July 1, 1917, 

 to June 30, 1918, and the amount disposed of for different purposes 

 and in different ways. Returns were received from 506 miUs 

 having a total production of cottonseed meal and cake of 1,600,000 

 tons, or about four-fifths of the total production, which was for 

 this period, as reported by the Census Bureau, about 2,000,000 tons. 



Table VIII shows that of the total quantity of cottonseed meal 

 produced about 4 per cent was used by the mills themselves in the 

 manufacture of fertilizer. About 400,000 tons were sold direct to 

 farmers, while the remainder was shipped to other points. Of the 

 quantity sold to farmers, nearly equal proportions were used as feed 

 and as fertilizer, while a very large proportion of the material that 



