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Page 2617, results 65401 - 65425

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Role of clay minerals in the transportation of iron
D. Carroll
1958, Geochimica et Cosmochimica Acta (14) 1-28
The clay minerals have iron associated with them in several ways:1.(1) as an essential constituent2.(2) as a minor constituent within the crystal lattice where it is in isomorphous substitution and3.(3) as iron oxide on the surface of the mineral platelets. Nontronite, “hydromica,” some...
Equilibrium distribution of dissolved sulphur species in water at 25°C and 1 atm total pressure
R.M. Garrels, C.R. Naeser
1958, Geochimica et Cosmochimica Acta (15) 113-130
The Eh-pH diagrams for the equilibrium concentrations in aqueous solution at 25°C of native sulphur and all the various sulphur-containing ions and acids from which the ions are produced have been constructed for systems having a total sulphur concentration of 0.1 molar. The composite of these diagrams indicates that elemental sulphur,...
Apparatus and technique for multiple tests by the confined-spot method of colorimetric analysis: Application to field estimation of nickel and copper
J. H. McCarthy Jr., R.E. Stevens
1958, Analytical Chemistry (30) 535-538
The confined-spot method of colorimetric analysis is generally applicable to the semiquantitative estimation of traces of ions in solution that form colored precipitates or otherwise alter material on a confined area of reagent paper. For precise results, the rate of flow of test solutions through the reagent paper must be...
Relationship between Secchi disc readings and light penetration in Lake Huron
Alfred M. Beeton
1958, Transactions of the American Fisheries Society (87) 73-79
Fifty-seven paired photometer and Secchi disc measurements made at 18 stations in Saginaw Bay and Lake Huron support the view that a counter-clockwise current usually occurs in the Bay with more transparent Lake Huron water flowing in along the northwest shore and less transparent Bay water flowing out along the...
Fishery management problems and possibilities on large southeastern reservoirs
John W. Parsons
1958, Transactions of the American Fisheries Society (87) 333-355
Principal problems concerning the fisheries of large reservoirs in the Southeast are: inefficient and highly selective exploitation of fish stocks, and protection and reclamation of damaged or threatened fisheries in tailwaters and tributary streams. Seven mainstream reservoirs on which data are available support an average angling pressure of 4.9 trips...
Some problems of private trout hatchery operators
Robert R. Rucker
1957, Transactions of the American Fisheries Society (87) 374-379
Disease, nutritional, and environmental problems in commercial production of trout are discussed, including mortality and age of spawners, copepod and gyrodactylid infections, suitable water temperatures, diseases (especially red mouth and back peel) and inspection of fish. It is concluded that experiences with hatchery procedures have varied greatly and often the...
Histopathology of fish. V. Gill disease
1957, Progressive Fish-Culturist (19) 7-13
Possibly no single disease accounts for greater annual mortality than gill disease. Apparently endemic in many hatcheries, the disease is characterized by periodic sharp upsurges which are sometimes correlated with rising water temperatures, excessive foreign matter in the water (Wales and Evins 1937), or borderline nutritional conditions....
Chemicals and wildlife
J.B. DeWitt, P. F. Springer
1957, National Agricultural Chemicals Association News and Pesticide Review (16) 13-14
Short paper that reviews some of the facts about effects of insecticides on wildlife and states principles that should be followed for maximum safety in treatment. These principles include minimal doses, good ground-to-plane control to avoid overdoses, and least possible pollution of water areas....
Water levels in observation wells in Santa Barbara County, California, in 1956
K. S. Muir, P.M. Merritt
1957, Open-File Report 57-78
Investigation of the ground-water resources of Santa Barbara County was continued during 1956 by the Geological Survey in cooperation with the Santa Barbara County Water Agency. Monthly water-level recorders were operated. Earlier measurements, covering the period 1941 through 1953, have been published in Geological Survey water-Supply Papers; those for 1954...
Ground water of the Columbia Basin
R. C. Newcomb
1957, Open-File Report 57-81
Part of the water that infiltrates from the surface reaches a zone of saturation whence it percolates toward the outlet and thereby is delayed in its course to the sea. This ground water is one form of natural storage which has different degrees of effect on stream flow in different...
An automatic suspended-sediment sampler
James C. Mundorff
1957, Open-File Report 57-80
The automatic suspended-sediment sampler was originally designed to obtain a suspended-sediment sample from a single point in a stream or reservoir during a rise in stage. The sampler was intended to be used during periods when manually-operated standard samplers could not be used. If the sampling site is remote from the field office...
Supplemental irrigation in Maryland in 1957
Gerald Meyer
1957, Open-File Report 57-71
This memorandum was prepared to accommodate requests for information on the extent and amount of supplemental irrigation in Maryland and the sources of water used for this purpose....
Irrigation in northeastern Mississippi
J.W. Lang, E. H. Boswell
1957, Open-File Report 57-63
The phenomenal increase in the use of water for agriculture, industry, and public water supply in the past few years has been an important factor in bringing about the current accelerated inventory and appraisal of the water resources of Mississippi. As a result of severe droughts during the past several...