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The Committee on Underground Waters for the new triennium is composed of the following: H. F. Blaney; E. B. Burwell; W. Gardner; C. S. Howard; F. H. Lahee; G. W. Musgrave; A. M. Piper; A. C. Swinnerton; L. K. Wenzel; D. G. Thompson (Chairman).The outstanding event of the year for...

The Runoff Committee during the year has consisted of H. K. Barrows, Merrill Bernard, E. S. Callings, R. S. Goodridge, G. A. Hathaway, Joseph Jacobs, Prof. F. T. Mavis, H. S. Riesbol, Waldo E. Smith, F. F. Snyder, and H. G. Wilm. The Committee represents a rather wide geographic distribution,...

The Mokelumne River basin of central California comprises portions of the California Trough and the Sierra Nevada section of the Pacific Mountain system. The California Trough is divisible into four subsections-the Delta tidal plain, the Victor alluvial plain, tlie river flood plains and channels, and the Arroyo Seco dissected pediment....

Perhaps one of the chief interests of ground‐water hydrologists is the study of water‐level fluctuations. Since the beginning of the science of hydrology attempts have been made to interpret these phenomena and determine their significance. On the basis of actual observations and “with special reference to Long Island, New York,”...

The hydrologists who are concerned with the study of the water that occurs below the land‐surface feel strongly the need of better agreement among the different countries as to the fundamental concepts of this branch of hydrology and as to technical terms to designate these concepts. For this reason, the...

In preparing the report of the Committee on Underground Waters of the Section of Hydrology for the final year of the triennium, it becomes evident that the collection of fundamental data relating to the hydrology of underground waters continues at a rate comparable to that maintained in the past few...

The Committee on Glaciers at present is constituted as follows:Harry Fielding Reid—Professor‐Emeritus of Geology, Johns Hopkins University (former member of the International Glacier Commission), 608 Cathedral Street, Baltimore, MarylandWilliam H. Hobbs—Professor‐Emeritus of Geology, University of Michigan (until recently Vice‐ President of the International Glacier Commission, at present associate member), Ann...

No abstract available....

In this informal paper the processes of snow‐wastage at high altitudes were discussed and a number of slides illustrating suncups and sunpits in different stages of development were shown. It was stressed that these features are peculiar to the region above the timber‐line, which biologists term the Alpine, or Arctic‐Alpine, Zone. That regions is,...

During 1935 and 1936 the Ground‐Water Division of the United States Geological Survey made an investigation of the ground‐water resources of the El Paso, Texas, Area. Geological and hydrological studies comprised the principal part of the investigation, and these studies were supplemented by measurements of earth‐resistivity made largely by the...

In the following list, brief‐statements have been added to certain references to call attention to special phases of ground‐water problems which are not apparent from the titles. Abstracts of most of the papers have been or will be published in the Annotated Bibliography of Economic Geology....

Two meanings are unfortunately given to the term geophysics. In the broad sense, based on the etymology of the term, geophysics means the physics of the Earth. This is its significance in the names “Geophysical Laboratory of the Carnegie Institution of Washington,” “International Union of Geodesy and Geophysics,” and “American...

Since the last meeting of the Section of Hydrology there has been a change in the organization and membership of some of the research‐committees, one relating to rainfall, of which Merrill Bernard is Chairman, and one relating to runoff, were created to replace the one committee which had functioned heretofore...

The work described in this paper was all done in connection with dam‐site investigations and was not directly connected with hydrology. However, geophysics is coming to have a place in hydrologic investigations, and these results may throw some light on what can be accomplished by resistivity‐measurements.We have found that,for many...

No abstract available....

Abundant supplies of fresh water are obtained from deep artesian wells In all parts of Kleberg County. The water is derived from a stratum of sand, 10 to 150 feet thick, which usually has been referred to the Goliad sand but possibly may be at the base of the LIssie...

When the program for the meeting of the Section of Hydrology a year ago was in preparation, it was suggested that a symposium be presented on the subject of the effects of the recent drought on ground‐water levels. The proposal was not carried out largely because at that time not...

Interest in problems of ground‐water hydrology continues unabated. As proof of this statement it is only necessary to state that of 57 papers listed for presentation at the present annual meeting of the Section of Hydrology and of the Pacific Coast meeting of the Section on January 31 and February...

Many of the water‐bearing formations in the United States have hydraulic gradients of much less than 20 feet to the mile, and some may have gradients of less than one foot to the mile, whereas most laboratory‐tests of permeability are made with much higher gradients. An investigation was therefore undertaken by the writer, under the direction of 0. E....

The ground‐water of the Florida Peninsula constitutes one of its most valuable natural resources and is of importance as a source of water‐supplies throughout the area. The problems relating to the development of ground‐water supplies are both quantitative and qualitative. They include such problems as the decline in yield of wells in areas of large withdrawals of water and salt‐water contamination of ground‐water supplies. In order...

The by‐laws adopted at the meeting of the Section of Hydrology in 1933 provided that the membership of research committees should be reconstituted every three years. There have, accordingly, been some changes in the membership of the Committee on Underground‐Water. Certain members have retired because of pressure of other duties or because they are no...

In the paper entitled “The measurement of the permeability of porous media for homogeneous fluids” by R. D. Wyckoff and others [42] a unit of permeability is proposed which is based on centimeters, seconds, and atmospheres of pressure (76 centimeters of mercury).In 1923, when the Hydrologic Laboratory of the United...

In the following list brief statements have been added to certain references to call attention to special phases of ground‐water problems which are not apparent from the titles. Abstracts of most of these papers have been or will be published in the Annotated Bibliography of Economic Geology. ...