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Page 7010, results 175226 - 175250

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Publication Extents

Not all publications have extents, not all extents are completely accurate
The effect of ether anesthesia on fin-clipping rate
Paul H. Eschmeyer
1953, Progressive Fish-Culturist (15) 80-82
As part of an experimental program to learn the effects of stocking lake trout (Salvelinus namaycush) in Lake Superior, 141, 392 fingerlings were marked at the Charlevoix (Michigan) Station of the U.S. Fish and Wildlife Service in October 1952. The adipose fin was removed from all fish, the right pelvic...
Ultraviolet spectrophotometric determination of tantalum with pyrogallol
J. I. Dinnin
1953, Analytical Chemistry (25) 1803-1807
In a search for a more rapid method for the determination of tantalum in rocks and minerals, an intensive study was made of the tantalum-pyrogallol reaction recommended by Platanov and Krivoshlikov, and a better modified spectrophotometric procedure is given. The improved method consists in measuring the absorbancy of the tantalum-pyrogallol...
Movement of parasitic-phase sea lampreys in Lakes Huron and Michigan
Bernard R. Smith, Oliver R. Elliott
1953, Transactions of the American Fisheries Society (82) 123-128
A program of tagging was carrie dout in the waters of northern Lake Huron during the fall and winter of 1951-52 in order to supplement the small amount of information available on movement of sea lampreys during their parasitic phase. A total of 219 parasitic-phase sea lampreys were tagged and...
The movement of tagged lake trout in Lake Superior, 1950-52
Paul H. Eschmeyer, Russell Daly, Leo F. Erkkila
1953, Transactions of the American Fisheries Society (82) 68-77
A total of 733 native lake trout was tagged at two widely separated localities in Lake Superior; subsequent recaptures numbered 155 fish (21.1 percent) during the year following marking. In October 1950, 116 large lake trout (average total length, 27.3 inches) were tagged near Keweenaw Point, Michigan. Fifteen...
War on lampreys
James W. Moffett
1953, Philadelphia Enquirer, 23 August 1953 16-17
Vampire-like sea lampreys look somewhat like short sections of garden hose, swim like eels, and live solely on the blood of fishes. Their voracious appetites have been especially harmful to fish in the Great Lakes, and it is there that methods of underwater electrocution are being applied in their...
Gamebird weights
A.L. Nelson, A. C. Martin
1953, Journal of Wildlife Management (17) 36-42
No abstract available. ...
Method for determination of small amounts of rare earths and thorium in phosphate rocks
C. L. Waring, H. Mela Jr.
1953, Analytical Chemistry (25) 432-435
In laboratory investigations, interest developed in the possible rare-earth content of phosphate samples from Florida and the northwestern United States. Because of the difficulty of making chemical determinations of traces of individual rare earths, a combined chemical-spectrographic method was investigated. After removal of iron by the extraction of the chloride...
The addition of iodine to tetramethylammonium iodide
H. W. Foote, M. Fleischer
1953, Journal of Physical Chemistry (57) 122-125
The system tetramethylammonium iodide-iodine-toluene has been studied by the solubility method at 6 and at 25°. The compounds (CH3)4NI3, (CH3)4NI5 and (CH3)4NI11 were found to be stable phases at both temperatures. In addition, the compound (CH3)4NI10 was found at 6° and the compound (CH3)4NI9 at 25°. The dissociation pressures of...
Semiquantitative spectrographic method for analysis of minerals, rocks, and ores
C. L. Waring, C. S. Annell
1953, Analytical Chemistry (25) 1174-1179
The quantity and complex nature of materials received for analysis in the spectrographic laboratories of the U. S. Geological Survey have emphasized the need for a spectrographic method to determine a maximum number of elements in a limited time with a reasonable degree of accuracy. The semiquantitative method described determines...
Geochemical studies of clay minerals III. The determination of free silica and free alumina in montmorillonites
Margaret D. Foster
1953, Geochimica et Cosmochimica Acta (3) 143-154
Determination of free silica by the method proposed made possible the derivation of logical formulas for several specimens of montmorillonites for which the formulas could not be derived from the analyses alone. Other montmorillonites, for which logical formulas could be derived from their analyses, were found to contain small amounts...
Quercetin as colorimetric reagent for determination of zirconium
F. S. Grimaldi, C. E. White
1953, Analytical Chemistry (25) 1886-1890
Methods described in the literature for the determination of zirconium are generally designed for relatively large amounts of this element. A good procedure using colorimetric reagent for the determination of trace amounts is desirable. Quercetin has been found to yield a sensitive color reaction with zirconium suitable for the determination...
Status of development of selected ground-water basins in Utah
H. E. Thomas, W.B. Nelson, B. E. Lofgren, R.G. Butler
1952, Technical Publication 7
This technical publication consists essentially of abstracts of more detailed reports which have been published. Reference to existing reports are given in the text and in the bibliography, page 114....
An interim report on gill disease
R.R. Rucker, H.E. Johnson, G.M. Kaydas
1952, Progressive Fish-Culturist (14) 10-14
GILL DISEASE among fish, a disease which is characterized by a proliferation of the gill epithelium, has been attributed to a number of different causes. Generally, there are two recognized types: the eastern or bacterial type, in which long filamentous bacteria can always be demonstrated; and the western type, in...
Geology of the Quartz Creek Pegmatite District, Gunnison County Colorado
Mortimer H. Staatz, A.F. Trites
1952, Trace Elements Investigations 138
The Quartz Creek pegmatite district includes an area about 29 square miles in the vicinity of Quartz Creek in Gunnison County,. Colo. This area contains 1,803 pegmatites that are intruded into pre-Cambrian rocks. The rocks exposed in the district range in age from pre-Cambrian to Recent. The oldest pre-Cambrian rocks are...