bution, and behavior of animals, such as tuna, men- 

 haden, salmon, herring, sardines, shrimp, seals, and 

 sea lion. 

 Specifications and requiremients; 



(1) Small lightweight tags with minimum drag. 



(2) Tags to be a self-contained, acoustic transducer 

 having a detection range of 2 km. and a life of 10 

 to 30 days. (Present tags are too large, and lack 

 longevity. ) 



1.5420 Environment Measuring Tags (17,502) 



To register minimia or maxima characteristics of envir- 

 onment, such as depth and temperature. 



1.5430 Underwater Fish Tagger (10) 



A system that would permit television observation of fish 

 in a trawl and which would shoot a single dart tag into 

 the fish in target position when triggered from the ship. 



1.5440 Fur Seal Tagge r and Tags (1) 



A tagging device and suitable tag for fur seal studies. 

 Such would inject a numbered and sealed radioactive slug 

 coated with a biological marker (perhaps tetracycline) sub- 

 cutaneously. It should be a magazine or hopper fed, gas 

 operated, hand held, highly portable, gun-type instrument 

 delivering a visually coded cylindrical slug approximately 

 2. 5 by 17 mnn. 



1.5500 AUTOMATIC CHEMICAL ANALYSER (24) 



Purpose: To provide an automatic system for chemical 

 analysis of sea water aboard research vessels. (Such 

 systems exist for laboratory use for other purposes, 

 but none have been developed to analyse sea water sam- 

 ples at sea. ) 

 Specifications and requirements: 



(1) Automatic system to analyse and readout results. 



(2) Provide quantitative analysis of the following: 

 Inorganic phosphate, total phosphorus, oxygen, 

 nitrite, nitrate, silicate, particulate iron, and 

 certain vitamins. 



(3) Accuracy: to customary laboratory accuracy. 



1.5600 EXPENDABLE SYSTEMS. 



435 



