Downstream change of velocity in rivers
Luna Bergere Leopold
1953, American Journal of Science (251) 606-624
Because river slope generally decreases in a downstream direction, it is generally supposed that velocity of flow also decreases downstream. Analysis of some of the large number of velocity measurements made at stream-gaging stations demonstrates that mean velocity generally tends to increase downstream. Although there are many reaches in nearly...
Relation of suspended-sediment concentration to channel scour and fill
Luna Bergere Leopold, Thomas Maddock Jr.
1953, Conference Paper, Proceedings of the fifth Hydraulics Conference, June 9-11, 1952, arranged by the Iowa Institute of Hydraulic Research
It is known that during the passage of a flood the channel of an alluvial stream scours and fills with considerable rapidity. Though such changes may be random, it seems more likely that there is a definite pattern of channel change directly related both to discharge and to the sediment...
The effects of DDT upon the survival and growth of nestling songbirds
Robert T. Mitchell, H.P. Blagbrough, R.C. VanEtten
1953, Journal of Wildlife Management (17) 45-54
No abstract available. ...
Mica deposits of the southeastern Piedmont, Part 11, Alabama district
E. W. Heinrich, J. C. Olson
1953, Professional Paper 248-G
No abstract available....
Field method for determination of traces of arsenic in soils: Confined spot procedure using a modified Gutzeit apparatus
H. Almond
1953, Analytical Chemistry (25) 1766-1767
[No abstract available]...
Sea lamprey spawning: Wisconsin and Minnesota streams of Lake Superior
Howard A. Loeb
1953, Special Scientific Report - Fisheries 97
No abstract available....
Floods of 1950 in southwestern Oregon and northwestern California
C. G. Paulsen
1953, Water Supply Paper 1137-E
No abstract available....
A new adjuvant in the diagnosis of fish furunculosis caused by Bacterium salmonicida
P. J. Griffin, S. F. Snieszko, S. B. Friddle
1953, Veterinary Medicine (48) 280-282
A century of American fish culture, 1853 - 1953
E. M. Wood
1953, Progressive Fish-Culturist (15) 147-162
No abstract available....
Ground-water conditions in artesian aquifers in Brown County, Wisconsin
William James Drescher
1953, Water Supply Paper 1190
The principal water-bearing rocks underlying Brown County, Wis., are thick sandstone units of Cambrian and Ordovician age. Other aquifers include limestone and dolomite of Ordovician age, dolomite of Silurian age, and sands and gravel of Pleistocene and Recent age. Underlying the water-bearing formations are crystalline rocks of pre-Cambrian age which...
The use of soils and paleosols for interpreting geomorphic and climatic history of arid regions
John Miller, Luna Bergere Leopold
1953, Research Council of Israel Special Publication 2
The study of modern surface soils, and ancient weathering zones, which occur either buried or as surface relicts, has contributed materially to understanding the complex events of the glacial and post-glacial period both in glaciated areas and in regions not influenced by glaciation. Most work of this kind in the...
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...
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...
Trout fishing in Michigan waters of Lake Superior, 1952
Ralph Hile
1953, The Fisherman (21) 7, 11-12, 14
This article has been prepared to present the results of recently completed statistical studies on the fishery in the State of Michigan waters of the lake. The tabulations of production of lake trout and the estimates of levels of fishing pressure and abundance in the various statistical districts have...
Perch studies in Green Bay
Ralph Hile
1953, Progressive Fish-Culturist (15) 133-134
For years the commercial fishermen of southern Green Bay contended that the minimum length of 8 inches for yellow perch in that are should be reduced because (1) the perch population was stunted, incapable of reaching the size of 8 inches in any numbers, and (2) the larger perch tended...
Preliminary report on the geology of the Nelchina area, Alaska
Arthur Grantz
1953, Open-File Report 53-79
No abstract available....
A modification in the technique of computing average lengths from the scales of fishes
John Van Oosten
1953, Progressive Fish-Culturist (15) 85-86
In virtually all the studies that employ scales, otollths, or bony structures to obtain the growth history of fishes, it has been the custom to compute lengths for each individual fish and from these data obtain the average growth rates for any particular group. This method involves a considerable amount...
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...
Virus diseases in fishes: outlook for their treatment and prevention
S. F. Snieszko
1953, Progressive Fish-Culturist (15) 72-74
No abstract available....
Report of Committee on Hydrobiology and Fish Culture of the American Fisheries Society
James W. Moffett
1953, Transactions of the American Fisheries Society (82) 315-320
Abstract has not been submitted...
The disinfection of eyed trout eggs
S. F. Snieszko
1953, Progressive Fish-Culturist (15) 10
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...
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...
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...
Separation of antimony by solvent extraction
C. E. White, H.J. Rose
1953, Analytical Chemistry (25) 351-353
[No abstract available]...
