A trawl fishery of considerable magnitude has developed in the Philippines since liberation from the Japanese in 1945. At the inception of the Philippines Fishery Program of the United States Fish and Wildlife Serve, the trawl fishery was using a Japanese beam trawl and was, for the most part, confined to Manila Bay. Realizing that the supply of fish badly needed by the Philippine public could be augmented by trawling, the program inaugurated exploratory fishing voyages to likely grounds and demonstrated the otter trawl in important fishing centers. Twenty-four areas were surveyed, and a number of drags sufficient to demonstrate the possibilities were made in each. The results are tabulated and described, along with the composition of the catch and catch by depth.

Summary of the raccoons of North and middle America, including history, habits, economic status, pelage and molt, measurements, and subgenera.

Biological investigations of king salmon, striped bass, and shad, water flow in relation to fish populations in the Sacramento - San Joaquin Delta.

Just a century ago some 625,000 acres of salt, brackish, and freshwater marshes bordered the Atlantic coast from Maine to Virginia. As early as 1885, however, work was begun to reclaim for agriculture considerable acreages of the fresher tidal lands. This research was conducted to study the effects of marshland drainage on plants, wildlife and wildlife habitat.

History and description of the Shad Run at Lawrence Fishway for purposes of design of fishways that will successfully pass shad.

Description of the Oceanographic Project and the results of the 1950 Winter Cruise of the Hugh M. Smith.

Report consisting of several translated Japanese works on fisheries and the costs of tuna fishing in the oceans around Japan.

Reports regarding skipjack fishing grounds in the Northeastern Sea near Japan.

From abstract: An account is given of experiments conducted in 1951 and 1952 with electro-mechanical and electrical barriers for the blocking and/or capture of sea lamprey runs in tributary streams of northern Lake Huron and northern Lake Michigan.

From introduction: The Fish and Wildlife Service's Great Lakes Fishery Investigations has recently developed alternating current electrical devices which appear most promising as a means of controlling the parasitic sea lamprey in the Great Lakes.

From introduction: This report details a project to conduct exploratory live-bait fishing in the central Pacific.

From introduction: The Japanese tuna fishery, which formerly had for its fishing grounds almost the whole western Pacific and a part of the Indian Ocean, wherein its small vessels roamed at will, was reduced by the Pacific war to such a nearly complete state of destruction that little was left to remind one of its former condition.

From introduction: The purpose of this paper is to provide a method of estimating the reliability with which longline catches of yellowfin tuna represent the relative abundance of the population.

Report regarding an investigation on fishing pressure, yield, and expenditures by fishermen on the Madison river in Montana.

From introduction: Feeding trials were conducted in 1952 with blueback salmon and chinook salmon used as test animals.

From introduction: The present paper is concerned with fisherman-expenditures, fisherman-use, and yield of the fisheries involved, although some data on other aspects of the fishery were obtained.

"This report is an analysis of a nationwide survey in October 1951 of household consumers' preferences for fresh and frozen fish and shellfish. The survey was conducted under the auspices of the United States Fish and Wildlife Service to aid the Nation's fishing industry, which is composed predominantly of small firms that find it difficult to make adequate contacts with consumers" (p. 1).

From introduction: This report is an investigation into the effects of pollution on the fisheries of Lake Erie.

From introduction: This paper summarizes data on fisherman use, yield to the fisherman, and fisherman's expenditures for 26 areas of the Missouri River Basin.

From abstract: This study on bigeye-tuna spawning is based on ovaries from 700 fish collected in the central equatorial, western equatorial, and Hawaii areas of the Pacific.

From introduction: "Determine the extent, distribution, and numbers of small water areas formerly and now present in the prairie pothole region of the Dakotas and Minnesota; to determine their importance to wildlife, the factors bringing about their disappearance, and to develop, if possible, methods for their preservation, if that appears warranted."

From introduction: "These surveys were for the purpose of determining the average daily expenditure of fisherman or hunters using specific areas, and this daily expenditure was then used to determine the expenditure per pound of fish, or unit of bird or animal bagged,"

Three vessels undertook a 1955 broad study of the high-seas distribution of salmon in the North Pacific Ocean.

Summary of the birds of Maryland and the District of Columbia, including geographical distribution, details on each species, and several maps of breeding ranges.