Résumés des communications (en anglais, en français et en espagnol) et communications (papers) par numéro d'ordre.

- Paper 20 : Fish-finder for bottom fish, by Tomiju HASHIMOTO and Yoshinobu MANIWA, Fishing boat laboratory, Fisheries agency, Japanese Government,

- Paper 21 : Trawling gear, by H. N. BINNS, Great Grimsby Coal, Salt and Tanning Co. Ltd., Grimsby, U. K.,

- Paper 22 : Location of herring shoals on the Icelandic North Coast Fishing Grounds, by Jakob JAKOBSSON, The University Research Institute, Department of fisheries, Reykjavik, Iceland,

- Paper 23 : Olympic trawl cable meter, by Carlyle A. CRECELIUS, Olympic Instrument Laboratories, Vashon, Washington, USA,

- Paper 24 : The method and gears used in the Mackerel fishery in Japan, by Keishun MIHARA, Chiba Prefectural fisheries, Experiment Station, Japan,

- Paper 25 : Trawl gear measurements obtained by underwater instruments, by P. A. de BOER, Fisheries inspectorate, The Hague, Netherlands,

- Paper 26 : The relation between the action of gill nets and the behaviour of a fish school, by Masatsume NOMURA, Tojai regional fisheries research laboratory, Tokyo, Japan,

- Paper 27 : Application ofacetylated cellulose for fishing gear : specific properties of this chemically modified fibre ; in particular its resistance to mildew, seawater, soil and other forms of bacterial attack, by Sandoz Ltd., Basle, Switzerland,

- Paper 28 : Attraction of fish by the use of light, by F. J. VERHEYEN, Laboratorium voor vergelijkende, physiologie, Utrecht, Netherlands,

- Paper 29 : Electrical fishing in Japan, by T. KUROKI, Faculty of fisheries, Kagoshima University, Japan,

- Paper 30 : On the difference between 24 Kc. And 200 Kc. Fish-finders, by T. HASHIMOTO and Y. MANIWA, Fishing boat laboratory, Fisheries agency, Japanese Government,

- Paper 31 : The development of a new herring trawl for use in mid-water or on the bottom, by W. E. BARRACLOUGH and A. W. H. NEEDLER, Fisheries research board of Canada, Nanaimo, B. C., Canada,

- Paper 32 : Radio communication apparatus for fishing boats in Japan, by K. KODAIRA, Anritsu Electric Co. Ltd., Tokyo, Japan,

- Paper 33 : electronic equipment used in japanese fishing vessels, by "Suiyokai", Tokyo, Japan,

- Paper 34 : The localization of fish concentrations by thermometric methods, by G. DIETRICH, D. SAHRHAGE, K. SCHUBERT, Deutsches hydrographisches Institut, Hamburg, Germany,

- Paper 35 : The mouth of the trawl, by Jack PHILLIPS, Managing director of Phillips trawl products Ltd. Of Grimsby, England,

- Paper 36 : Echo sounding and fish detection, by R. E. CRAIG, Marine laboratory, Aberdeen, U. K.,

- Paper 37 : Trends in methods and gear use in trawling on the West Coast of the United States with special reference to the pacific North-West, by Dayton L. ALVERSON, Fisheries biologist, Department of fisheries, State of Washington, U. S. A.,

- Paper 38 : Studies on two-boat trawler and otter trawler by means of instruments, by Chikamasa HAMURO and Kenji ISHII, Fishing boat laboratory, Fisheries agency, Japanese Government,

- Paper 39 : Studies on the trawl net. I. A net-mouth stretcher working on the kite principle, by S. TAKAYAMA and T. KOYAMA, Tokai regional fisheries research laboratory, Tokyo, Japan,

- Paper 40 : A new method of handling longline gear. A description of POFI "Tub" gear, by Herbert J. MANN, Pacific oceanic fishery investigations, Honolulu, Hawaii, U. S. A.,

- Paper 41 : Fundamental studies on the visual sense in fish, by Tamotsu TAMURA, Fisheries Institute, Faculty of agriculture, Nagoya University, Anzyo, Aiti-Prefecture, Japan,

- Paper 42 : Improved echo sounding equipment for the detection of shoals of bottom fish, by Hans KIETZ, Electro-Acoustic laboratory, Atlas-Werke A. G., Bremen, Germany,

- Paper 43 : The thames floating sprat trawl, by H. S. NOEL, Staff writer, "World fishing", London, U. K.,

- Paper 44 : Simple devices for studying the geometry of fishing gears and for relating some commercial fishing operations to the water movements, by J. N. CARRUTHERS, National Institute of Oceanography, Wormley, Nr. Godalming, Surrey U. K.,

- Paper 45 : A note on the relation between biological and technological studies and their place in fisheries science, by FAO Fisheries Division, Biology Branch, in collaboration with Marine laboratory, Aberdeen, U. K.,

- Paper 46 : Horizontal echo-ranging, by Karl FEHER, Electroacustic G. m. b. H., Kiel, Germany,

- Paper 47 : "Terylene" polyester fibre and its relation to the fishing industry, by Imperial chemical industries Ltd. (Fibres division), Harrogate, U. K.,

- Paper 48 : Fishing with South African pursed lampara, by C. G. Du PLESSIS ; Assistant Director, Division of fisheries, Dept. Of Commerce and Industries, Cape Town, Union of South Africa,

- Paper 49 : Scandinavian experience with mid-Water trawling, by Karl-Hugo LARSSON, Stockholm, Sweden,

- Paper 50 : Nylon in fishing nets, by J. E. LONSDALE, British nylon spinners limited, Pontypool, Monmouthshire, U. K.,

- Paper 51 : Ultrasonic propagation measurement in sea water up to 400 kc, by Tomiju HASHIMOTO, Fishing boat laboratory, Fisheries agency, Japanese Government, and Yoshimitsu KIKUCHI, Research institute of electrical communication, Tohoku University, Sendai, Japan,

- Paper 52 : Yarn count or number systems, by British standards institution, 2 Park Lane, London, U. K.,

- Paper 53 : The manufacture and testing of synthetic yarns and fibres used in Japanese fishing gear, by Japan chemical fibres association, Tokyo, Japan,

- Paper 54 : Tests for materials used in fishing, by J. REUTER, Nederlandsche Visscherij-Proefstation en Laboratorium voor Materialen-Onderzoek, Utrecht, Netherlands,

- Paper 55 : Power requirements for deep sea trawling, by G. C. EDDIE, Food investigation organization, Department of scientific and industrial research, Torry research station, Aberdeen, U. K.,

- Paper 56 : Rot-Resistant fishing nets by the CIBA "Arigal" process, by A. RUPERTI, CIBA Limited, Basle, Switzerland,

- Paper 57 : Mid-water trawls and their operation, by B. B. PARRISH, Marine laboratory, Torry, Aberdeen, Scotland,

- Paper 58 : Tests with nylon yarn fishing tackle in Swedish Inland fisheries, by Gösta MOLIN, Freshwater laboratory, Drottnongholm, Sweden,

- Paper 59 : Development of fishing net and rope preservation in Japan, by Shigene TAKAYAMA and Yoshinori SHIMOZAKI, Tokai regional fisheries research laboratory, Tokyo, Japan,

- Paper 60 : Practical considerations of the use of synthetic fibres in twines and nets, G. A. HAYHURST and A. ROBINSON, William Kenyon and Sons Ltd., Dukinfield, Cheshire, U. K.,

- Paper 61 : The size determination of trawls in Poland, by M. SZATYBELKO, Sea fisheries institute, Gdynia, Poland,

- Paper 62 : Evaluation of rot-retarding net preservatives, by J. ZAUCHA, Sea fisheries institute, Gdynia, Poland,

- Paper 63 : Correlation of midwater trawl catches with echo recordings from the Northeastern Pacific, by E. A. SCHAEFERS and D. E. POWELL, Bureau of commercial fisheries, U. S. Fish and Wildlife Service, Seattle, Washington, U. S. A.,

- Paper 64 : Midwater trawl design by underwater observations, by R. F. SAND, Bureau of commercial fisheries, U. S. Fish and Wildlife Service, Washington 25, D. C., U. S. A.,

- Paper 65 : A practical depth telemeter for midwater trawls, by R. L. McNEELY, Bureau of Commercial Fisheries, U. S. Fish and Wildlife Service, Seattle, Washington, U. S. A.,

- Paper 66 : The Decca Navigator system and its application to fishing, by The Decca Navigator Co. Ltd., Marine Sales Department, London, S. W. 9.,

- Paper 67 : A discussion of factors affecting the efficiency of dredges, by R. H. BAIRD, Ministry of Agriculture, Fisheries and Food, Fisheries Experiment Station, Conway, Caerns, U. K.,

- Paper 68 : Fleet operation of trawlers with a mother-ship, by C. BIRKHOFF, Bremerhaven, Germany,

- Paper 69 : "Stern trawling" versus "Side trawling", by C. BIRKHOFF, Bremerhaven, Germany,

- Paper 70 : The puretic power block. A revolutionary mechanical method for hauling nets and its effect on modern purse seining, by PETER G. SCHMIDT, Jr., Marine Construction and Design Co., Seattle 99, Washington, U. S. A.,

- Paper 71 : Otter boards for pelagic trawling, by F. SÜBERKRÜB, Hamburg, Germany,

- Paper 72 : Ocean cables and trawlers, by R. A. GOODMAN and C. S. LAWTON, The Western Union Telegraph Company,

- Paper 73 : Commercial fishing in the U. S. A. With fishpump systems, by D. W. BURGOON, President, Yeomans Brothers Company, Melrose Park, Illinois, U. S. A.,

- Paper 74 : Summary of experiments on the response of tuna to stimuli, by Albert L. TESTER, Division of biological research, Bureau of Commercial Fisheries, U. S. Fish and Wildlife Service, Washington 25, D. C., U. S. A.,

- Paper 75 : Characteristics of synthetic cords used for fishing nets and ropes in Japan, by Yoshinori SHIMOZAKI, Tokai Regional Fisheries Research Laboratory, Tokyo, Japan,

- Paper 76 : The features and use of "Amilan" fishing nets, by M. AMANO, Toyo Rayon Co. Ltd., Tokyo, Japan,

- Paper 77 : Classification of fishing gear, by A von BRANDT, Prof. Und Dir., Institut fuer Netz- und Materialforschung, Hamburg, Germany,

- Paper 78 : On the fishing power of nylon gill-nets, by G. SAETERSDAL, Institute of Marine Research, Bergen, Norway,

- Paper 79 : Terminology and count of synthetic fibres, and lateral strength and knot-firmness of synthetic yarns for fishing purposes, by Hans STUTZ, Farbwerke Hoechst A. G., Bobingen Mills, Germany,

- Paper 80 : Man-made fibres, by R. ARZANO, Chairman of the industrial uses, Sub-Committee of International rayon and synthetic fibres committee,

- Paper 81 : Reliability of bottom topography obtained by ultrasonic echo-sounder, by T. HASHIMOTO, M. NISHIMURA and Y. MANIWA, Fishing boat laboratory, Fisheries agency, Japanese Government,

- Paper 82 : A large-sized experimental tank of twin symmetric elliptical circuits, by Yoshikazu NARASAKO and Masaji KANAMORI, Faculty of fisheries, Kagoshima University, Kagoshima City, Japan,

- Paper 83 : Discussion on the Mediterranean trawl-net, by Menachem BEN-YAMI, Kibbutz "Sa'ar", D. N. Gallil Ma'Aravi, Israel,

- Paper 84 : Synthetic fibres in the fishing industry, by E. I. Due Pont de Nemours and Co., Delaware, U. S. A.,

- Paper 85 : A research on the under-water-set fixed net, by Masaji KANAMORI, Faculty of fisheries, Kagoshima University, Kagoshima City, Japan,

- Paper 86 : Model experiments on the sardine purse seine. Operating in the sea of Hyûga, by Yûnasuke IITAKA, Department of Fisheries, Faculty of Agriculture, Kyoto University, Maizuru, Japan,

- Paper 87 : Rational design of fishing gear, by A. J. LEWIS, British Trawler'Federation, Ltd., Grimsby, U. K.,

- Paper 88 : Studies to improve the efficiency of otter doors and trawl floats, by Luigi CATASTA, S. Benedetto del Tronto, Italy,

- Paper 89 : The technological charactéristics of perlon for fishing equipment, by Perlon-Warenzeichenverband e. V., Frankfurt (Main), Germany,

- Paper 90 : The effect of pulsating electric current in fish, by E. HALSBAND, Institut für Küsten-und Binnenfischerei, Hamburg, Germany,

- Paper 91 : Dangers and precautions in the electrical fishery, by A HÖSL, Elektrotechnische beratungsstelle raiffeisen, Munich, Germany,

- Paper 92 : Investigation on the effect of various kinds of electric currents on the metabolism of the fish, by Ingeborg HALSBAND, Institut für Küsten-und Binnenfischerei, Hamburg, Germany,

- Paper 93 : Electro-fishing. The new field of fishery. Its great possibilities and its limitations, by Juergen DETHLOFF, Dethloff - Electronic, Hamburg-Lokstedt, Germany,

- Paper 94 : Some physical properties of Manilla Rope, by J. REUTER, Nederlandsche Visscherij-Proefstation en Laboratorium voor Materialen-Onderzoek, Utrecht, Netherlands,

- Paper 95 : Testing webbing and netting yarn, by J. REUTER, Nederlandsche Visscherij-Proefstation en Laboratorium voor Materialen-Onderzoek, Utrecht, Netherlands.