Publications

The Committee members are the same as last year, namely: H. K. Barrows; Merrill Bernard; E. S. Cullings; R. S. Goodridge; G. A. Hathaway; Joseph Jacobs; F. T. Havis; H. S. Riesbol; Waldo E. Smith; F. F. Snyder; and H. G. Wilm.During the year one addition was made, namely, AURELIO BENASSINI of Mexico City and associated with the Mexican Government. One of Mr. Benassini's associates, Mr. Quintero, w

The calculations of Inglis show that the rate of transfer of angular momentum to the Earth's (liquid) core may be small enough to permit the axis of rotation of the core to lag about 2° behind that of the rock‐mantle in the precessional motion of the Earth. The travel‐time of P′ would be altered by about one‐fifth of a second, which is too small to be detected by a single observation made with eve

In the south‐central part of Scott County, Kansas, there is an area of shallow water‐table in which the ground‐water levels have declined steadily since 1932 (Fig. 1). In this area water has been withdrawn from wells for irrigation in increasing amounts during the last decade and the precipitation has been considerably below normal for the last seven years. Thus, the problem of interpreting the do

Engineers and hydrologists engaged on flood‐problems throughout much of the United States east of the Rocky Mountains must deal to a considerable extent with wide‐spread storms covering thousands of square miles. The gradations of meteorologic conditions as regard both area and time are relatively homogeneous during such storm‐events and are affected but moderately by orographical influences. Unde

The membership of the Committee during the past year was as follows: I. A. Dennison. Bureau of Standards; C. S. Scofield, Department of Agriculture; D. G. Thompson, Geological Survey; T. G. Thompson, University of Washington, Seattle, Washington; and C. S. Howard, United States Geological Survey, Washington, D.C. (Chairman).

Continued progress has been made in magnetic surveys over large sectional areas by G. R. MacCarthy. Beginning in Florida south of the Okeefenokee Swamp, magnetic traverses were measured and continued through the southern part of Georgia. The most northerly traverses crossed regions where they contacted the crystallines near the surface of the ground. All traverses were run in an east‐west directio

Texas is second among quicksilver-producing States because of the Terlingua region, in the Big Bend of the Rio Grande. This region contains Cretaceous strata, largely calcareous, which grade upward into Tertiary volcanics, locally without break. The strata are cut by numerous intrusions, largely alkalic, and are extensively folded and faulted.Many of the lodes are near the base of the impervious D

No abstract available.

No abstract available.

No abstract available.

In many irrigation‐districts where the supplies of surface‐water from a stream nave been entirely appropriated, pumping from wells has been resorted to in order to supplement the surface‐supply. Where the pumps are near a stream that has a flow during the irrigation‐season, either because of normal ground‐water flow or because of return flow from surface‐water irrigation, the pumping is likely to

No abstract available.