FISHERY INDUSTRIES OF THE UNITED STATES, 1923 155 



Domestic exports of canned fish from the United States, by countries, 1923 — Con. 



BY-PRODUCTS OF THE FISHERIES 



Although the value of the by-products does not make an impressive 

 total, as compared to the value of canned products, their production 

 is of importance in offsetting excessive overhead costs and salvaging 

 valuable materials that would otherwise be completely lost. Prin- 

 cipal among the by-products are the fish oils, fish scrap, crushed 

 shells, and fish glue. Including the oil and scrap produced in the 

 menhaden industry, the by-products in 1923 had a total v^alue of 

 $12,702,861, as compared with $11,390,693 in 1922. 



FISH OILS 



The fisii-oil production in the United States and Alaska in 1923 

 amounted to 9,590,875 gallons, valued at $4,228,592. This does not 

 include the production of whale oil, which in 1923 was 1,346,356 

 gallons, valued at $701,731, nor sperm oil, which was 210,474 gallons, 

 valued at $90,153. The largest item of hsh oil was menhaden oil, of 

 which 7,461,365 gallons were produced, valued at $3,316,277. In 

 1922 the total production of fish oil was 8,288,328 gallons, valued at 

 $3,346,046. Tliere was thus in 1923 an increase of 16 per cent in 

 the t otal quantity of fish oils (exclusive of whale and sperm) and 26 

 per cent in value. 



FISH SCRAP AND MEAL 



The total value of all fish scrap and meal, green and dry, including 

 that prepared from shrimp and menhaden, was, in 1923, $4,413,385, 

 as compared with $4,336,677 the previous year, an increase of 24 per 

 cent. There was a relatively greater production of the crude or 

 green scrap this year than last. 



