8 BULLETIN 538, U. S. DEPAETMENT OF AGBICULTUBE. 



when dried in this manner should constitute a valuable by-product. 

 Analysis shows that dried shrimp waste contains over 11 per cent 

 nitrogen, calculated as ammonia, and 2$ per cent phosphorus, calcu- 

 lated as phosphorus pentoxid.' These figures indicate high ferti- 

 lizing value. 



SUMMARY. 



Cleanliness, proper cooking, and care in handling shrimp, com- 

 bined with a discontinuance of the practice of using preservatives, 

 have resulted in the production of a finely flavored product which is 

 gradually increasing in popularity. At the same time improvements 

 in methods of packing and preparation have made shrimp accessible 

 to many new markets at long distances from the producing sections. 



Packers in the South and on the Pacific Coast should make every 

 effort to keep their own products up to the highest standard and 

 should do everything possible to promote the general adoption of 

 high standards by the trade. 



The increased consumption of shrimp and the opening of new mar- 

 kets are stimulating the industry to increase its catches. If shrimp 

 are taken at the wrong time of year or in excessive numbers their 

 extermination is probable. Those interested in the shrimp industry, 

 therefore, should give early attention to the question of conserva- 

 tion. It is also to the interest of those whose livelihood is dependent 

 upon catching and packing shrimp to encourage investigations 

 planned to determine the periods of spawning, the times of migra- 

 tion, and the feeding habits of shrimp, and to do their part in helping 

 to make such investigations result in the adoption of protective 

 measures. 



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