features of the process of radiation preservation of foods, some of the current obstacles to full utilization of the process, history of the radiation preservation process, and the current state of radiation preservation. It also tells what the successful development of the process can do for the farmer, grain broker, food processor, Public Health Officer, military logistician, grocer, consumer and housewife, and instrument manufacturer; what the various organizations in this country are doing in research on the irradiation of food; what other governments are doing; and what our government is doing. It also discusses regulations and licensing; patent structure and its application; and the effect the adoption of radiation preservation methods may have on employees, union, stockholders, and customers. A schematic drawing of the United States Army Ionizing Radiation Center is also included.

RED TIDE:

The Relationship of Total Phosphorus Concentration Sea Water to Red Tide Blooms, by Selwyn Jack Bein, Contribution No. 184, 14 pp., illus., printed. (Reprinted from Bulletin of Marine Science of the Gulf and Caribbean, vol. 7, no. 4, December 1957, pp. 316-329.) The Marine Laboratory, University of Miami, Virginia Key, Miami 49, Fla.

SALMON:

The Salmon Crisis, 12 pp., illus., printed. Washington Department of Fisheries, 4015 20th Ave. W., Seattle 99, Wash., August 1954. Briefly presents a report on the environmental changes to which a drastic depletion of the salmon resources of Washington may be attributed. Also describes salmon rehabilitation activities of the Washington Department of Fisheries.

Statistics on Salmon Sport Fishing in the Tidal Waters of British Columbia, 1957, 19 pp. text, 2 pp., maps, processed. Department of Fisheries of Canada, 1110 West Georgia Street, Vancouver 5, B. C., Canada, May 16, 1958. Presents British Columbia's commercial and sport catch of salmon by species for 1953-57, commercial catch of troll-caught salmon, and summary of sport fishing catches by area. Salmon Rehabilitation and Hatcheries--Activities and Accomplishments, 12 pp., illus., printed. Washington State Department of Fisheries, Olympia, Wash., January 1958. A brief report containing facts about salmon; the role of hatcheries; a description of original experiment stations; developments in artificial propagation; summary of the Pacific salmon family; hatching methods and accomplishment of hatcheries; over-all rehabilitation objectives; and locations of hatcheries in Washington.

SCOTLAND:

Report on the Fisheries of Scotland, 1957, 68 pp., printed. Her Majesty's Stationery Office, 13A Castle Street, Edinburgh 2, Scotland, April 1958. A report, containing many statistical tables, which covers the means of capture and number of persons engaged in Scottish fisheries; herring, white fish, shellfish, and salmon

fisheries; byproducts production; fishery regulations; scientific investigations; and harbor studies and improvements. Contains various appendices which present supplemental data on the above-mentioned subjects.

SEA LAMPREY:

"The Sea Lamprey and the Death of the Great Lakes Lake Trout Fishery," by Edmund K. Swigart, article, Yale Conservation Studies, vol. 4, printed. Yale Conservation Club, New Haven, Conn. A brief account of the alarming influx of the sea lamprey through the Great Lakes and the consequent toll of the lake trout, which had provided one of the most profitable fisheries of the region. The article outlines the plan of campaign for the elimination of the lamprey, including the search for a larvacide which could destroy either the larvae or the young adults drifting back from the streams where they have spawned to the lakes. The plan, international in scope because Canada is affected as well as the United States, calls for the eventual reintroduction of lake trout and other species under attack to a full capacity as quickly and as economically as possible. The author says that if the lamprey is not the sole cause of the fisheries decrease, it is at least one of the major two or three factors and must be controlled before any optimistic view of the return of this lucrative industry can be formulated.

SEALS:

"Canada's Atlantic Sealfishery," by Bruce Woodland, article, Trade News, vol. 10, no. 8, February 1958, pp. 3-8, illus., printed. Department of Fisheries of Canada, Ottawa, Canada. Two articles on Canada's Atlantic sea fishery. The first article describes the decline of sealing operations in Newfoundland, the traditional home of the seal hunt. The second article, entitled "Halifax Now Main Centre," by G. J. Gillespie, contains a report on sealing out of the port of Halifax. A brief history of the Atlantic seal fishery is given, along with present operations, and prospects for future sealing operations.

SHARKS:

"A Review of the Eastern Pacific Sharks of the Genus Carcharhinus, with a Redescription of C. malpeloensis (Fowler) and California Records of C. remotus (Dumeril)," by Richard H. Rosenblatt and Wayne J. Baldwin, article, California Fish and Game, vol. 44, no. 2, April 1958, pp. 137-159, illus., printed, single copy 75 cents. Printing Division, Documents Section, California Department of Fish and Game, Sacramento 14, Calif.

SHRIMP:

The Use of Sodium Bisulfite for the Control of Black Spot in Shrimp, by C. Isaac Camber, Mary H. Vance, and James E. Alexander, Technical Series No. 20, 19 pp., illus., printed. The Marine Laboratory, University of Miami, Virginia Key, Miami 49, Fla., December 1957. Results of work which was undertaken to determine the optimum concentration and exposure time of a sodium bisulfite sea-water dip for preventing the development of black spot in pink

shrimp. It was found that sodium bisulfite applied as a 1-percent dip for one minute was effective in reducing the incidence of black spot in shrimp for at least 10 days of iced storage. When used at this level, no detrimental effects on the flavor, odor, toughness, nor bacterial counts of treated shrimp were observed. Sulfur dioxide residuals were less than 10 parts per million, and no evidence of thiamine destruction was noted. Full benefits from the use of the chemical will not be obtained unless quick and careful handling procedures are followed. Using too much of the chemical or dipping the shrimp too long in the sodium bisulfite solution may cause a slight sharp or acid taste which would render them less desirable to the buyer.

SNOOK:

A Survey of the Snook Fishery of Florida, with Studies of the Biology of the Principal Species, CENTROPOMUS UNDECIMALIS (Bloch), by Arthur R. Marshall, Technical Series No. 22, 39 pp., illus., printed. The Marine Laboratory, University of Miami, Virginia Key, Miami 49, Fla., March 1958. The results of a survey, conducted from April 1954 to May 1955, which was undertaken to obtain a description of the snook fishery of Florida, in which the dominant species is Centropomus undecimalis (Bloch), and to determine certain aspects of the biology of that fish. It includes discussions of the fishery; biology, geographic range, and aspects of the life history of Centropomus undecimalis; and ecological considerations. The author states that "Although snook have been caught in Florida by sport fishermen for many years, a steady commercial fishery for them has existed only since about 1930. Sport and commercial fishing activities are confined generally to the southern half of the State. Brackish water mangrove areas produce the bulk of the catch, though a low percentage comes from fresh waters. The commercial fishery ranks about 15th in dollar value among the State's food-fish fisheries, with an annual value estimated at $75,000, and annual production of million pounds or more. Commercial production for the period 1941 to 1955 reached its highest peak in 1948, at 800,000 pounds, when the snook seine was in use and price was high. A decline since 1948 has occurred, possibly because of lessening market demand for fresh fish." This report was prepared in 1956. In 1957 the Florida State Legislature enacted a law prohibiting the sale of snook. Consequently all references to commercial fishing for snook apply to the situation prior to this legislative action.

TERRITORIAL WATERS:

Laws and Regulations on the Regime of the Territorial Sea, ST/LEG/SER.B/6 (UN Legislative Series, Sales No. 1957, V.2), 811 pp., printed, $7. United Nations, New York, N. Y., November 1957.

TIDES:

Tide Tables--West Coast, North and South America (including the Hawaiian Islands), 1958, 222 pp., printed, 50 cents. U. S. Department of Commerce, Coast and Geodetic Survey, Washington 25, D. C. This publication contains tables on daily tide predictions for 188 reference ports, tidal differences and other constants for about 5,000 stations, approximate height of tide at any time, local mean time of sunrise and sunset, reduction of local mean time to standard time, moonrise and moonset, and astronomical data. Explanatory notes to facilitate usage of each table are included. Also, contains a list of Coast and Geodetic Survey publications relating to tides and tidal currents.

TRADE AGREEMENTS:

"How a Trade Agreement is Made," by Honoré M. Catudal, Department of State Publication 6615, Commercial Policy Series 165, 6 pp., illus., printed, 5 cents, Department of State, Washington, D. C. (For sale by the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C.) A step-by-step account of the manner in which a trade agreement is negotiated. Background information is presented on trade agreements legislation, interdepartmental organization, and preparatory procedure.

TUNA:

Tuna Fish (Report on Investigation Conducted Pursuant to a Resolution by the Committee on Finance of the United States Senate dated August 20, 1957), 180 pp., processed. United States Tariff Commission, Washington 25, D. C. This is a report of the results of an investigation on tuna made in response to a resolution of the Committee on Finance of the Senate adopted August 20, 1957. The investigation was made pursuant to section 332 of the Tariff Act of 1930, as amended, and was similar in scope to a previous investigation made by the U. S. Tariff Commission in response to a resolution of the Committee adopted June 26, 1952. This report discusses the consumption of tuna in the United States in recent years; gives general information on the domestic tuna fishery, and detailed information on the operations of the bait-boat, purseseine, and albacore fishing fleets; discusses at some length the operations of the domestic tunacanning industry; and gives information on a number of other subjects, including tariff rates, tuna imports, and the tuna fisheries of Japan and Peru.

WASHINGTON:

Washington State Shellfish, 8 pp., illus., printed. Washington State Department of Fisheries, Olympia, Wash., January 1957. This leaflet briefly covers Washington's most important commercial species of oysters, clams, and shrimp.