8 BULLETIN 538, U. S. DEPARTMENT OF AGRICULTURE. 
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 24 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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WASHINGTON : GOVERNMENT PRINTING OFFICB : 1917 
