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Recent studies of the rainfal‐and‐runoff relation tend towards treatment of the subject in two parts, namely, (1) the ground‐phase, which includes the study of such processes as infiltration and evaporation, and (2) the channel‐phase, which comprehends the study of the flow of water in the channel‐system with particular reference to flood‐wave movement. This paper discusses the channel‐phase.

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The modern petroleum industry in the United States of America dates from the drilling of the first commercial oil well in 1859. Up to the present, about a million wells have been drilled for oil and gas, and the total production of petroleum has been 22,452,498,000 barrels, which has been contributed by twenty-three of the forty-eight States.

The Vaucluse gold property has been worked intermittently since gold was discovered in 1832. The latest operation was carried on by the V-M Corporation from March 1935 to November 1938, producing 26,452 tons of ore of \$143,760 gross value, of which \$91,569.36 was won in 1938.The host rock is a quartz-sericite-chlorite schist. The workings lie wholly within a well-defined shear zone up to 40 feet

In order to obtain information needed in planning for industrial development along the Savannah River and in the city of Savannah, Georgia, a study of the salinity of the Savannah River was undertaken by the Geological Survey, United States Department of the Interior, in cooperation with the Georgia Division of Mines, Mining, and Geology. The Works Progress Administration of Georgia and the city o

Slichter showed in 1898 that a solution may be obtained for a given problem in the steady motion of ground‐water by solving the familiar Laplace equation and that therefore in steady‐state conditions a problem in the motion of ground‐water is mathematically analogous to a problem in the steady flow of heat or electricity [see 1 of “References” at end of paper]. More recently it has been recognized

Observations of bottom hole temperatures in approximately 100 deep wells in the Salt Creek field have been made during the past few years by the Stanolind Oil and Gas Company. These recent observations confirm and extend in a remarkable manner the results obtained in the summers of 1922 and 1923  when it was found from temperature surveys in 21 wells that the temperatures over a considerable porti

The State of Michigan makes up about one‐half of the area of the great Michigan Synclinal Basin, the remainder of which embraces Lakes Michigan and Huron and small parts of Wisconsin, Illinois, Indiana, Ohio, and Ontario [see 1 (p. 7) of “References” at end of paper]. The Basin has characteristics of both a geosyncline and a major structural basin. The geosynclinal origin is indicated by the facts

The classic studies of Badon Ghyben [see 1 of “References” at end of paper] and Alexander Herzoerg [2].that defined the basic principles governing the relation between salt water and fresh water in water‐bearing sands are now fairly well known. They showed that fresh water floats on the heavier salt Water and that, under static conditions, the ratio between the head of the fresh water above mean s