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Page 6939, results 173451 - 173475

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Uranium minerals in Oligocene gypsum near Chadron, Dawes County, Nebraska
R.J. Dunham
1955, Trace Elements Investigations 525
Carnotite, sabugalite [HAI(UO2)4(PO4)4 • 16H2O] and autunite occur in the basal 25 feet of a 270-foot sequence of nonmarine bedded gypsum and gypsiferous clay in the Brule formation of Oligocene age about 12 miles northeast of Chadron in northeastern Dawes County, Nebraska. Uranium minerals are visible at only two localities and are associated with carbonaceous matter. Elsewhere...
Winter losses of Canada geese at Pea Island, North Carolina
A.B. Cowan, C. M. Herman
1955, Conference Paper, Proceedings of the annual conference of the Southeastern Association of Game and Fish Commissioners
Report of research and findings to date. Topics discussed include: studies on life history and biology of gizzard worm; results of autopsies; experiments on survival and transmission of gizzard worm eggs and larvae in both field and laboratory; persistence of infections; and results of infections in geese of different...
Fifty-fifth Christmas Bird Count. 159. Ocean City, Md
C.S. Robbins
1955, Audubon Field Notes (9) 115-116
The distribution of dynamic pressure behind a Harris' hawk's wing was sampled using a wake rake consisting of 15 pitot tubes and one static tube. The hawk was holding on to a perch, but at an air speed and gliding angle at which it was capable of gliding. The perch...
DDT vs. wildlife: Relationships between quantities ingested, toxic effects and tissue storage
J.B. DeWitt, J.V. Derby Jr., G.F. Mangan Jr.
1955, Journal of the American Pharmaceutical Association, Scientific Edition (44) 22-24
Young and adult quail and pheasants were fed diets containing DDT. Chemical analysis of tissues indicated that quantities of DDT stored were not proportional to total amounts administered nor to duration of exposure, but were related to the severity of toxic symptoms. Concentration of the toxicant in breast muscle of...
Pesticide toxicity, effects of chlorinated hydrocarbon insecticides upon quail and pheasants
J.B. DeWitt
1955, Journal of Agricultural and Food Chemistry (3) 672-676
Previous studies had shown that heavy or repeated applications of DDT resulted in decreases.in bird populations, but long-range effects of this and other chlorinated hydrocarbon insecticides had not been fully evaluated. Experiments were conducted to determine toxiCitY to quail and pheasants of aldrin, dieldrin, endrin, and strobane, and to...
Macracanthorhynchus ingens from raccoons in Maryland
Carlton M. Herman
1955, Proceedings of the Helminthological Society of Washington (22) 105-105
There have been very few published records of the occurrence of the acanthocephalan parasite Macracanthorhynchus ingens (von Linstow, 1897) in North America. Chandler (1942) and Moore (1946) reported 11 o 13 raccoons (Procyon lotor) trapped in Angelina County, Texas, infected with these intestinal parasites. From 1 to 90 worms occurred...