Evolution and distribution of the coregonids
Stanford H. Smith
1957, Journal of the Fisheries Research Board of Canada (14) 599-604
Increased knowledge of the morphological and physiological plasticity of the coregonids has minimized the significance of conflicting morphological data that have retarded the development of an evolutionary theory. Of the four phyletic lines recognized through worldwide studies,Coregonus originated in the lake and stream area of northwest Eurasia, Stenodus andProsopium evolved in the rivers of...
The near extinction of lake trout in Lake Michigan
Paul H. Eschmeyer
1957, Transactions of the American Fisheries Society (85) 102-119
After the collapse of the commercial fishery for lake trout (Salvelinus namaycush) in Lake Michigan in the late 1940's, the further decline of the population was traced by records of numbers of small lake trout (mostly 11 to 16 inches in total length and 3 to 5 years old)...
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,...
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....
Laboratory care and feeding of larval lampreys
Philip J. Sawyer
1957, Copeia 244-244
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
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...
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...
The life-cycle of Diplostomum baeri eucaliae n. subsp. (Trematoda: Strigeida)
G. L. Hoffman, J.B. Hundley
1957, Journal of Parasitology (43) 613-627
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...
Use of antibiotics in the diet of salmonid fishes
S. F. Snieszko
1957, Progressive Fish-Culturist (19) 81-84
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...
Absorption spectra of the complexes of uranium (VI) with some β-diketones
H.I. Feinstein
1957, Microchemical Journal (1) 237-244
[No abstract available]...
Data of rock analyses-II (Supplement)
M. Hooker
1957, Geochimica et Cosmochimica Acta (11) 138
No abstract available....
Core logs from Owens, China, Searles, and Panamint basins, California
George I. Smith, Walden P. Pratt
1957, Bulletin 1045-A
Detailed logs of drill cores are presented in this report. The drill cores are of sediments from four basins that were occupied during the Pleistocene by a continuous chain of lakes. Owens Lake basin (one hole, 920 feet) contains fine-grained sediments and includes locally many diatoms and ostracodes. China Lake...
Determination of yttrium, lanthanum, cerium, neodymium, and ytterbium in test samples granite G-1 and diabase W-1 by a combined chemical-spectrochemical technique
S. Berman
1957, Geochimica et Cosmochimica Acta (12) 271-272
No abstract available....
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,...
Water problems in the present trend towards greater aridity
Luna Bergere Leopold
Harmon Craig, editor(s)
1957, Conference Paper, Proceedings: Conference on recent research in climatology
In the past few days we have heard a number of scientists, gathered here at Scripps Institution of Oceanography, discuss research work which, in one manner or another, bears on problems related to water resources. They have been discussing, particularly, problems in the field of climatology, and have speculated on...
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...
Infectious pancreatic necrosis in trout
S. F. Snieszko, E. M. Wood, W. T. Yasutake
1957, Archives of Pathology (63) 229-233
No abstract available....
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...
Determination of the susceptibility of Aeromonas salmonicida to sulfonamides and antibiotics, with summary report on the treatment and prevention of furunculosis
S. F. Snieszko, G. L. Bullock
1957, Progressive Fish-Culturist (19) 99-107
No abstract available....
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...
Modified zirconium-Eriochrome Cyanine R determination of fluoride
L. L. Thatcher
1957, Analytical Chemistry (29) 1709-1712
The Eriochrome Cyanine R method for determining fluoride in natural water has been modified to provide a single, stable reagent solution, eliminate interference from oxidizing agents, extend the concentration range to 3 p.p.m., and extend the phosphate tolerance. Temperature effect was minimized; sulfate error was eliminated by precipitation. The procedure...
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...
