Selective precipitation of thorium iodate from a tartaric acid-hydrogen peroxide medium application to rapid spectrophotometric determination of thorium in Silicate Rocks and in Ores
F. S. Grimaldi
1957, Analytical Chemistry (29) 848-851
This paper presents a selective iodate separation of thorium from nitric acid medium containing d-tartaric acid and hydrogen peroxide. The catalytic decomposition of hydrogen peroxide is prevented by the use of 8quinolinol. A few micrograms of thorium are separated sufficiently clean from 30 mg. of such oxides as cerium, zirconium,...
Systematic variation of rare-earth elements in cerium-earth minerals
K. J. Murata, H. J. Rose Jr., M. K. Carron, J.J. Glass
1957, Geochimica et Cosmochimica Acta (11) 141-161
In a continuation of a study reported previously, rare-earth elements and thorium have been determined in monazite, allanite, cerite, bastnaesite, and a number of miscellaneous cerium-earth minerals. A quantity called sigma (∑), which is the sum of the atomic percentages of La, Ce, and Pr, is proposed as an index...
Use of antibiotics in the diet of salmonid fishes
S. F. Snieszko
1957, Progressive Fish-Culturist (19) 81-84
No abstract available....
Modified determination of radium in water
F. B. Barker, L. L. Thatcher
1957, Analytical Chemistry (29) 1573-1575
The proposed method embodies a barium sulfate carrier precipitation, filtration through molecular filter membranes, and collection of activity after prescribed aging period. The method is sufficiently accurate and precise to indicate the potability of water and for use in general studies of radium in chemical hydrology. Amounts of radium as...
Comparison of the isotopic abundance of U235 and U238 and the radium activity ratios in Colorado Plateau uranium ores
F. E. Senftle, L. Stieff, F. Cuttitta, P.K. Kuroda
1957, Geochimica et Cosmochimica Acta (11) 189-193
The isotopic abundances of uranium and the radium activity ratios of eleven samples of uranium ore from the Colorado Plateau have been measured. No significant variation in the isotopic abundance of the uranium was noted; with'in the experimental error, the average U235/U238 ratio is 137.7. There is a significant variation in...
Quantitative radiochemical methods for determination of the sources of natural radioactivity
J. N. Rosholt
1957, Analytical Chemistry (29) 1398-1408
Study of the state of equilibrium of any natural radioactive source requires determination of several key nuclides or groups of nuclides to find their contribution to the total amount of radioactivity. Alpha activity measured by scintillation counting is used for determination of protactinium-231, thorium-232, thorium-230, and radium-226. The chemical procedures...
Semi-quantitative spectrographic analysis and rank correlation in geochemistry
F.J. Flanagan
1957, Geochimica et Cosmochimica Acta (12) 315-322
The rank correlation coefficient, rs, which involves less computation than the product-moment correlation coefficient, r, can be used to indicate the degree of relationship between two elements. The method is applicable in situations where the assumptions underlying normal distribution correlation theory may not be satisfied. Semi-quantitative spectrographic analyses which are reported as...
Minor elements in Keweenawan lavas, Michigan
H. R. Cornwall, H. J. Rose Jr.
1957, Geochimica et Cosmochimica Acta (12) 209-224
The distribution of minor elements in three basaltic flows of the Keweenawan series, of Michigan, is related to differentiation in the flows. Thus, nickel is most abundant in the early differentiates; nickel, chromium, and barium are generally deficient in the pegmatites, which formed late; whereas copper, vanadium, yttrium, and other...
U.S. Federal fishery research on the Great Lakes through 1956
Ralph Hile
1957, Special Scientific Report - Fisheries 226
The major purpose of this publication is to present an annotated bibliography of papers resulting from Federal investigations on the Great Lakes fish and fisheries since the formal initiation of a continuing research program by the Fish and Wildlife Service. It is believed that this purpose can be served best...
Aeromagnetic map, of the Wawayanda and part of the Pine Island quadrangles, Sussex and Passaic Counties, New Jersey, and Orange County, New York
John R. Henderson Jr., Natalie S. Tyson
1957, Geophysical Investigations Map 159
No abstract available....
On the postglacial history of the Devils Lake Region, North Dakota
Saul Aronow
1957, The Journal of Geology (65) 410-427
Devils and Stump lakes in eastern North Dakota have been diminishing in area more or less continuously since the land around them was settled in the 1880's. Desiccations similar to the current one have occurred at least once and possibly two or more times in the past and are indicated...
Preliminary geologic map of the Circle Cliffs 1NW Quadrangle, Garfield County, Utah
Louis D. Carswell, Edward S. Davidson
1957, Trace Elements Memorandum 1065
No abstract available...
Ringworm in a population of snowshoe hares
Lowell W. Adams, S. B. Salvin, W. J. Hadlow
1956, Journal of Mammalogy (37) 94-99
The occurrence of ringworm, or dermatomycosis, in wild animals has been rarely reported. DeLamater (1939) described infections of Trichophyton mentagrophytes in common gray squirrels on and near the Johns Hopkins University campus at Baltimore. Errington (1942) and Charles (1946) reported on the occurrence of T. mentagrophytes in 35 of 364 litters (9.6%) of muskrats...
Lignasan for bacterial gill disease
Robert R. Rucker, B. J. Earp, Roger E. Burrows
1956, Progressive Fish-Culturist (18) 75-77
Bacterial gill disease plagues salmon and trout in many hatcheries: some infections are sporadic, but others are continual. An inexpensive, easily applied, stable, safe chemical would be highly advantageous for treatment. The use of Roccal as a 1-hour treatment for bacterial gill disease (Fish 1947) was developed at the...
Long-term trends of ground-water levels in the United States
V.C. Fishel
1956, Eos, Transactions, American Geophysical Union (37) 429-435
Ground-water levels at the end of 1954 were at or near record-low stages throughout most of the southern two-thirds of the United States. These low stages, like those of the early 1930's, have led to frequent expression of the opinion that the water table throughout the country is continuously falling...
Tissue damage in salmonids caused by Halisidota argentata Packard
E. M. Wood, W. T. Yasutake
1956, Journal of Parasitology (42) 544-546
During the histological examination of a collection of wild and hatchery salmonids, a peculiar foreign body was occasionally observed in various organs, particularly in the viscera. These objects, usually accompanied by a focal inflammation, were observed in 10 of 75 samples of wild trout and salmon collected in Oregon and...
Ground water in Wisconsin
William James Drescher
1956, Wisconsin Geological & Natural History Survey Information Circular 3
The purpose of this report is to describe in general the occurrence, source, movement, and use of ground water in Wisconsin in order that present problems of ground-water development may be understood and to point out the need for study and evaluation of the potential ground water available. Areas with...
Tectonic map of western South Dakota, showing the distribution of uranium deposits
Frank W. Osterwald, Basil Gray Dean
1956, Trace Elements Memorandum 948
No abstract available....
Tectonic map of western Nebraska and northwestern Kansas showing the distribution of uranium occurrences
Frank W. Osterwald, Basil Gray Dean
1956, Trace Elements Memorandum 950
No abstract available....
Tectonic map of Wyoming, east of the overthrust belt, showing the distribution of uranium deposits
Frank W. Osterwald, Basil Gray Dean
1956, Trace Elements Memorandum 951
No abstract available....
Application of punched cards to geologic data concerning uranium deposits in sandstone
Warren Irvin Finch
1956, Trace Elements Memorandum 980
No abstract available....
Glauconitic mica in the Morrison formation in Colorado
Walter David Keller
1956, Trace Elements Memorandum 999
No abstract available....
Radiometric investigations along the Taylor Highway and part of the Tanana River, Alaska
Max Gregg White, Arthur Edward Nelson, John J. Matzko
1956, Trace Elements Memorandum 328
No abstract available....
A field method for obtaining significant average directional measurements in cross-stratification studies
Omer Beaver Ramp, Alfred T. Miesch
1956, Trace Elements Memorandum 689
No abstract available....
Preliminary chemical quality study in the Manhattan Beach area, California
Robert Brennan
1956, Bulletin 63-E
In 1904 Mendenhall (1905) made a survey of the ground water conditions in southern California. At the time of his survey the piezometric surface in the area was above sea level, but since that time water levels have declined. During the 1920's, years of rapid development, the water levels declined...
