Limnological surveys of the Great Lakes--early and recent
Stanford H. Smith
1957, Transactions of the American Fisheries Society (86) 409-418
Early explorations on the Great Lakes were concerned largely with things easily collected or observed—common organisms, water levels, surface temperatures … Even when more scientific studies were undertaken, they were at first scattered and small-scale. Effective surveys became possible only through inter-agency cooperation which permits a pooling of facilities, staff,...
The control of the upstream movement of fish with pulsated direct current
Alberton L. McLain
1957, Transactions of the American Fisheries Society (86) 269-284
Alternating-current electromechanical devices installed in the mouths of streams have proved effective in stopping the spawning migrations of the parasitic sea lamprey (Petromyzon marinus) which has seriously damaged Great Lakes fisheries. In a few streams, excessive mortality has occurred to other fish at the alternating-current barriers. A direct-current unit was...
Structure and growth of scales of yellow perch of Green Bay
Leonard S. Joeris
1957, Transactions of the American Fisheries Society (86) 169-194
The appearance of the scales of yellow perch differs with the location on the fish's body. Comparison of scales of Green Bay perch taken above and below the lateral line reveals the former to have more sharply defined circuli and to exhibit fewer false annuli and less of the shading...
Absorption spectra of the complexes of uranium (VI) with some β-diketones
H.I. Feinstein
1957, Microchemical Journal (1) 237-244
[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...
Thoron-meso-tartaric acid system for determination of thorium
Mary H. Fletcher, F. S. Grimaldi, Lillie B. Jenkins
1957, Analytical Chemistry (29) 963-967
In the spectrophotometric determination of thorium with thoron, meso-tartaric acid is used as a masking reagent for zirconium. The effects of different experimental variables such as the concentrations of the reagents, time, and temperature, and the behavior of 35 ions which might be present in thorium ores are discussed. A...
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,...
Determination of uranium in natural waters
L. L. Thatcher, F. B. Barker
1957, Analytical Chemistry (29) 1575-1578
The fluorophotometric determination of uranium was studied to develop a procedure applicable to the routine analysis of waters. Three grams of the high carbonate flux are used in a dilution procedure with spiking. Because of the comparatively high reflectivity of this large disk and the low uranium concentration, a correction...
A fluorimetric study of the thorium-morin system
R.G. Milkey, M. H. Fletcher
1957, Journal of the American Chemical Society (79) 5425-5435
Thorium reacts with morin to yield a yellow complex that fluoresces when irradiated with ultraviolet light. The effect on the fluorescence of such variables as concentration of acid, alcohol, thorium, morin, and complex; time, temperature and wave length of exciting light are studied to determine experimental conditions yielding maximum fluorescence....
Volumetric determination of uranium: Titanous sulfate as reductant before oxidimetric titration
J.S. Wahlberg, D. L. Skinner, L. F. Rader Jr.
1957, Analytical Chemistry (29) 954-957
Need for a more rapid volumetric method for the routine determination of uranium in uranium-rich materials has led to the development of a method that uses titanous sulfate as a reductant before oxidimetric titration. Separation of the hydrogen sulfide group is not necessary. Interfering elements precipitated by cupferron are removed...
X-ray spectrographic determination of cesium and rubidium
J. M. Axelrod, I. Adler
1957, Analytical Chemistry (29) 1280-1281
An x-ray spectrographic method for the determination of rubidium and cesium was developed, using the internal-standard method and a four-channel flat-crystal spectrograph. The sensitivity is within 0.1% for cesia and 0.02% for rubidia; the precision is within 10% of the amount present. Results agree well with those obtained by flame...
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...
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...
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...
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...
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...
Carlsbad Caverns East quadrangle, New Mexico
P. T. Hayes
1957, Geologic Quadrangle 98
No abstract available....
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....
Great Lakes fauna, flora, and their environment: A bibliography
John Van Oosten
1957, Book
No abstract available....
History of Red Lakes fishery, 1917-38, with observations on population status
John Van Oosten, Hilary J. Deason
1957, Special Scientific Report - Fisheries 229
A historical account traces the development of the commercial fisheries of the Red Lakes, Minnesota, from its inception in 1917 as a war measure through 1938. The trends of production and catch per unit of effort were followed for the principal species with notes on statistics of the minor...
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...
Use of antibiotics in the diet of salmonid fishes
S. F. Snieszko
1957, Progressive Fish-Culturist (19) 81-84
No abstract available....
Toxicity of 4,346 chemicals to larval lampreys and fishes
Vernon C. Applegate, John H. Howell, A.E. Hall, Manning A. Smith
1957, Special Scientific Report - Fisheries 207
The problem of controlling the sea lamprey in the upper Great Lakes has received considerable attention in recent years and requires no review here (Applegate and Moffett. 1955). Electromechanical weirs and traps and electrical barriers have been developed which can be successfully employed to block and/or destroy spawning runs of...
Reconnaissance study of the Marsh anticline, northern Alaska
Robert Hamilton Morris
1957, Open-File Report 57-76
No abstract available....
Ground water in the Crow Creek-Sand Lake area, Brown and Marshall Counties, South Dakota
F. C. Koopman
1957, Water Supply Paper 1425
The Crow Creek Sand Lake area is in the northeastern part of South Dakota and consists of flat to gently rolling land. It is roughly 25 miles square and is bounded on the west by the James River, on the north by the North Dakota State line, and on the...
