22 



V. S. BUREAU OF FISHERIES. 



oil, 283,815 gallons; sperm oil, 168,729 gallons; salmon oil, 71,522 

 gallons; cod and cod-liver oil, 49,772 gallons; and miscellaneous, 

 257,593 gallons. Imports of fish oils entered for consumption for 

 the calendar year 1920 amounted to 2,268,736 gallons, valued at 

 $2,462,232. Tliis amount includes cod oil, 1,044,624 gallons, valued 

 at $979,891; cod-liver oil, 445,167 gallons, valued at $892,965; herring 

 and other fish oils, 575,842 gallons, valued at $402,325; seal oil, 

 13,085 gallons, valued at $11,761; sperm oil, 99,783 gallons, valued 

 at $98,033; other whale oil, 86,788 gallons, valued at $75,176; and 

 other rendered oils and combinations of, 3,447 gallons, valued at 

 $2,081. The exports of fish oils in 1920 amounted to 428,292 gallons, 

 valued at $406,966. Of this amount 253,494 gallons, valued at 

 $185,502 went to England; 53,690 gallons, valued at $50,943, to 

 Canada; 26,452 gallons, valued at $24,850, to Cuba; 14,662 gallons, 

 valued at $30,431, to Mexico; 14,596 gallons, valued at $7,298, to 

 Belgium; 13,513 gallons, valued at $36,564, to Germany; and 13,419 

 gallons, valued at $8,700, to France. 



FISH SCRAP AND MEAL. 



The production of fish and whale scrap and meal and shrimp 

 bran in 1921 amounted to 107,273 tons, valued at $3,557,142. Of 

 this amount 60,031 tons, valued at $2,613,361, was dried scrap and 

 meal; 44,454 tons, valued at $895,140, acidulated scrap; 2,160 tons, 

 valued at $31,827, crude or green scrap; and 628 tons, valued at 

 $16,814, shrimp bran. Of the total quantity produced 89,559 tons 

 are credited to the Atlantic and Gulf coast States and 17,714 tons 

 to the Pacific coast States and Alaska. It is estimated that not less 

 than 15,000 tons of the dried product produced on the Atlantic 

 seaboard were used as fish meal for feeding purposes. This in- 

 creased use of fish meal is directly attributable to the aid given by 

 the Bureau of Fisheries and the Bureau of Animal Industry. 



POULTRY GRIT AND LIME. 



The demand for and use of ground oyster shells for poultry grit 

 and lime for fertilizer has developed rapidly in recent years into an 

 important industry. In fact, when consideration is given to the 

 decline in the catch of oysters in recent years and the utilization 

 of stocks accumulated before the demand became so great, it is to 

 be expected that there will be a lessening of production and a de- 

 crease in the number of operators. At the same time efforts will be 

 made to draw upon other similar materials, such as scallops, clams, 

 etc., in an effort to meet the demand. 



Analyses op Shells of Oystbrs and Scallops. 



From the analyses it will be noted that the scallop shells have a 

 much smaller percentage of impurities, silica, iron, and aluminum, 

 than oyster shells. As the scallop shells grind to a snow-white 



