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Factor analysis is applied to results of chemical analyses of 103 water samples from wells in the Upper and Middle Mojave River valley, San Bernardino County, California. Chemical analyses showed that there are three principal chemical types of water, calcium bicarbonate, sodium sulfate, and sodium chloride, as well as many...

No abstract available. ...

Much valuable new information has been provided by Surveyor III; some of the most significant and interesting events are presented here. Only a limited interpretive discussion is included at this time, pending completion of data reduction and more detailed analysis of information available from the Surveyor mission....

Significant new information has been provided by Surveyor III's successful landing and operation on the lunar surface; some of the most significant and interesting events are presented here. Pending completion of data reduction and more detailed analysis of the information available from the Surveyor mission, only limited interpretive discussion is...

No abstract available. ...

Watercourse aquifer systems in many areas are adversely affected by wastes disposed into surface‐water sources, resulting in either reduced streambed permeability, infiltration of wastes into the aquifer, or both. These conditions are illustrated at Lancaster, Ohio, where low streambed permeability in the vicinity of the municipal well field, resulting from the discharge of wastes to the Hocking River, seriously retards the infiltration of surface water and lessens the available...

Methods of collection and analysis of epifaunal communities from six stations in the Patuxent estuary are described. The stations were distributed from Solomons near the mouth of the estuary, upstream to Lower Marlboro, near the limit of salt water intrusion. Species composition and abundance, seasons of attachment, and production of the epifaunal community were...

In connection with a paper by Baldwin and Gross on the localization of residual hematite ore (for reference, see this Bibliography Vol. 31, No. 7, 02 E67-05748), inaccuracies in the citations from the literature used for purposes of comparison are pointed out,...

Surveyor III landed on the lunar surface at 00:04 GMT, on Day 110 (April 20), 1967, approximately 23 h after local sunrise on the moon. The television camera was turned on about 1 h after touchdown, and 6315 pictures were taken during the remainder of the lunar day. The camera...

No abstract available....

Two holes drilled through reef sediments into basalt have established a geologic section through the Miocene. Midway was built above the sea by flows that were weathered and partially truncated in pre-Miocene time. After submergence, volcanic clays were reworked and covered by limestones. Overall submergence was interrupted at least twice...

No abstract available....

No abstract available. ...

Ultrabasic (pH > 11) water issues from some fresh ultramafic bodies. The properties of the ultrabasic solutions are believed to be due to current reactions yielding serpentine from primary olivines and pyroxenes. The low concentrations of divalent iron. divalent magnesium, and dissolved silica from the serpentinization require an increase in...

Cliftonite, a polycrystalline aggregate of graphite with cubic morphology, is known in ten meteorites. Some workers have considered it to be a pseudomorph after diamond, and have used the proposed diamond ancestry as evidence of a meteoritic parent body of at least lunar dimensions. We have synthesized cliftonite in Fe-Ni-C...

Abstract not available. ...

Peromyscus interparietalis is considered to be specifically distinct from P. guardia, of which it was originally considered a subspecies. Each species includes three subspecifically distinct populations, each endemic to an island in the northern Gulf of California, Baja California, Mexico. Two subspecies of P. interparietalis and one of P. guardia are newly described here. The mice...

The phase relations in the ternary system Fe-Pb-S were determined by quenching and differential thermal analysis experiments in rigid silica-glass tubes. The solubilities of FeS in galena and in liquid Pb and the extent of solid solution of PbS in pyrite and pyrrhotite at 700° C are too small to be determined by the methods...

Concentrated saline brine tapped by a deep well drilled for geothermal power near the Salton Sea, California, deposited metal-rich siliceous scale at the rate of 2 to 3 tons per month. The iron-rich opaline scale contains an average of 20% Cu and up to 6% Ag present in bornite, digenite,...

The quality which is necessary depends on the use to which the water will be put. Because uses vary, so also must quality standards. Maintaining any level of quality presents a problem of cost and depends on variations in natural water characteristics, in time and space, and variations in volume...

Two rapid and simple methods have been developed for determining the approximate cooling rates of iron and stony-iron meteorites in which kamacite formed by diffusion-controlled growth along planar fronts. The first method requires only measurements of the mean kamacite bandwidth and the bulk nickel content. The second method requires the...

Studies conducted 1961-65 at the Montezuma National Wildlife Refuge in New York demonstrated that mallards (Anas platyrhynchos) and black ducks (Anas rubripes) make extensive use of stumps and dead snags for nest sites. Nest densities in timbered habitats compared favorably with those in untimbered habitats. Nest success was generally higher...

An analysis was made of eight insecticide residues in the renal fat tissue of 23 white-tailed deer (Odocoileus virginianus), 13 mule deer (O. hemionus), 9 pronghorns (Antilocapra americana), and 2 elk (Cervus canadensis) collected in South Dakota during the fall of 1964. Identification and quantitative analysis of the insecticide residues...

The acute toxicity of lead, three types of plastic-coated lead, two lead-magnesium alloys, iron, copper, zinc-coated iron, and molybdenum-coated iron shot were tested in year-old male game farm mallards. Mallards (Anus platyrhynchos) were fed eight number 6 shot of each type and observed for a period of 60 days. Ducks...

The Geological Survey has been the foremost agency in the investigation of ground‐water resources in the United States beginning about 1910. Most of the basic principles of modern ground‐water hydrology were developed in the Survey's program of cooperative investigations. Use of ground water in the United States in 1960 was about 17½ percent of all water uses, excluding water power. The use will probably increase, though at a decreasing rate. Although amount of use may level off, the...