Vol. 4, No. 5. Designing an improved Californi; 

 tuna purse seine. By M'nakhem Ben-Yami 

 and Roger E. Green. December 1968, pp. 183- 

 207, 16 figs., 5 tables. 



ABSTR.\CT 

 In the Eastern Tropical Pacific Ocean, about 50 

 percent of the purse seine sets for tuna are unsuc- 

 ceBsful, owing mostly to the fish's escaping the net 

 during setting and pursing operations. Described 

 here is the design of a proposed purse seine that will 

 largely retain the desirable features of the presently 

 used seine but that will sink faster and use the 

 webbing with greater economy. In comparative 

 tests with scale models (1:25), the model built ac- 

 cording to the proposed design sank nearly three 

 times as fast as did the model of the presently used 

 seine. 



Fishery Leaflet 



606. Great Lakes gill net. By William G. 

 Gordon. -June 1968, iii + 8 pp., 14 figs., 1 

 table. 



ABSTRACT 



This report on present methods of setting and re- 

 trieving gill nets in the Great Lakes has illustra- 

 tions of equipment, techniques, and materials com- 

 monly used throughout the industry. 



607. Published in 1967. 



608. The bait minnow industry of the Great 

 Lakes. By William G. Gordon. February 

 1968, 6 pp., 10 figs. 



ABSTRACT 

 The bait minnow industry is described, and meth- 

 ods for increasing the harvest are demonstrated by 

 the results of exploratory bait fishing activities 

 completed by the Bureau of Commercial Fisheries. 



609. How to throw a castnet. By Hilton M. 

 Floyd. March 1968, 12 pp., 11 figs. 



ABSTRACT 

 The pictorially described procedure in this leaf- 

 let will help anyone to master this art of fishing. 



610. Published in 1967. 



611. Construction and operation of a floating 

 Alaska Salmon trap. By Fred W. Hipkins. 

 April 1968, iii + 12 pp., 8 figs., 1 table. 



ABSTRACT 

 Salmon traps, now nearly extinct, are the most 

 efficient fishing gear ever developed for the capture 

 and impoundment of salmon. The first salmon trap 

 was built in Cook Inlet about 1885, but floating 

 traps were not introduced until after 1890. The 



number of traps varied annually until the State 

 Legislature abolished them in 1959. In 1967, only 

 three traps were operated in Alaska in a Federal 

 Fishing Reserve set aside by President Woodrow 

 Wilson for the Metlakatla Indians on Annette 

 Island. A floating salmon trap consists of a lead, 

 outer and inner hearts, pot, and two spillers. Meth- 

 ods of hanging, setting, and brailing a trap are 

 given. 



612. Published in 1967. 



613. Available leaflets on fisheries. Anony- 

 mous. June 1968, 5 pp. 



(No abstract.) 



614. The American shad. By Randall P. Cheek. 

 August 1968, iii + 13 pp., 18 figs. 



ABSTRACT 

 The life history of the American shad (Alosa 

 sapidissima) is described. The economic importance 

 of the commercial and sport fisheries are reviewed, 

 and the status of research and management of this 

 species are summarized. 



615. List of fishery leaflets of the U.S. Fish 

 and Wildlife Service. Anonjonous. June 

 1968, 30 pp. 



(No abstract.) 



616. A trotline for blue crabs. By Hilton M. 

 Floyd. December 1968, 5 pp., 5 figs. 



ABSTRACT 

 A method of using many kinds of bait on a trot- 

 line is presented. The gear is easy to make and use. 



617. List of fishery associations in the United 

 States, 1967-68. By Gale H. Lyon. January 

 1968 (revised), v + 14 pp. 



ABSTRACT 

 Ten national and 112 local fishery associations 

 in 29 States and the District of Columbia are listed. 

 -Also included is the name of one of the officers of 

 each association. 



618. Partial list of fishing boat builders. Pre- 

 pared by Branch of Exploratory Fishing. No- 

 vember 1968, iii -I- 12 pp. 



ABSTRACT 

 The following list of builders includes data on 

 238 shipyards in 26 coastal and inland States. The 

 list also provides information (if known) on the 

 construction material used. 



619. Published in 1969. 



620. List of fishermen's and fish shore workers' 

 unions in the United States, 1968. By Branch 



