Thoron-tartaric acid systems for spectrophotometric determination of thorium
F. S. Grimaldi, Mary H. Fletcher
1956, Analytical Chemistry (28) 812-816
Thoron is commonly used for the spectrophotometric determination of thorium. An undesirable feature of its use is its high sensitivity to zirconium. This study describes the use of tartaric acid as a masking reagent for zirconium. Three tartaric acid-thoron systems, developed for the determination of thorium, differ with respect to...
Abundances of the elements
H. E. Suess, H. C. Urey
1956, Reviews of Modern Physics (28) 53-74
[No abstract available]...
Multiple-unit fusion rack
A. P. Marranzino, W. H. Wood
1956, Analytical Chemistry (28) 273-274
No abstract available....
Aromatic fluorine compounds. VII. Replacement of aromatic -Cl and -NO2 groups by -F
G. C. Finger, C.W. Kruse
1956, Journal of the American Chemical Society (78) 6034-6037
Replacement of -Cl by -F in aryl chlorides with potassium fluoride has been extended from 2,4-dinitrochlorobenzene to less activated halides by the use of non-aqueous solvents, especially dimethylformamide (DMF) and dimethyl sulfoxide (DMSO). Also replacement of -NO2 by -F in substituted nitrobenzenes was studied in DMF. As a direct result...
Spectrophotometric study of the thorium-morin mixed-color system
M. H. Fletcher, R.G. Milkey
1956, Analytical Chemistry (28) 1402-1407
A spectrophotometric study was made of the thoriummorin reaction to evaluate the suitability of morin as a reagent for the determination of trace amounts of thorium. At pH 2, the equilibrium constant for the reaction is 1 x 106, and a single complex having a thorium-morin ratio of 1 to...
Use of Argon as a Counting Gas at − 183°C
F. E. Senftle, T. A. Farley
1956, Review of Scientific Instruments (27) 238
[No abstract available]...
Variation in content of abstracts according to use
M. Fleischer, M. Hooker
1956, Journal of Chemical Education (33) 27-32
No abstract available....
Aromatic fluorine compounds. VI. Displacement of aryl fluorine in diazonium salts
G. C. Finger, R.E. Oesterling
1956, Journal of the American Chemical Society (78) 2593-2596
Several chlorofluorobenzenes have been isolated from the Schiemann synthesis of fluorobenzenes. These have been shown to be the products of two side reactions occurring during thermal decomposition of the dry benzenediazonium fluoborate salt containing coprecipitated sodium chloride, an unavoidable contaminant in large preparations involving the use of hydrochloric acid and...
Status of sea lamprey control
James W. Moffett
1956, Wisconsin Conservation Bulletin (21) 14-17
Four experiments involving 873 bob-white quail (Colinus virginianus) chicks were conducted at the Patuxent Research Refuge, Laurel, Maryland. A comparison was made of calcium: phosphorus ratios of 1:1, 15:1, 1%: 1, 2:1, 2+:1,and 2%: 1in diets with phosphorus levels of 0.52, 0.75, 1.00, and 1.25 percent. The results indicate that...
Data and understanding
Luna Bergere Leopold
Gilbert F. White, editor(s)
1956, Conference Paper, The future of arid lands: Papers and recommendations from the International Arid Lands Meetings
In the year 1534 when Cabeza de Vaca escaped from the aborigines of southern Texas by whom he had been enslaved for six years, he made his way on foot from the vicinity of Galveston to the west coast of Mexico. Although his Relación was not printed until 1542, the...
Life history of lake herring of Green Bay, Lake Michigan
Stanford H. Smith
1956, Fishery Bulletin (109) 87-138
Although the lake herring has been an important contributor to the commercial fish production of Green Bay, little has been known about it. This study is based on field observations and data from about 6,500 lake herring collected over the period 1948 to 1952. Relatively nonselective commercial pound nets...
Validity of age determination from scales, and growth of marked Lake Michigan lake trout
Louella E. Cable
1956, Fishery Bulletin of the U.S. Fish and Wildlife Service (57) 1-59
Abstract has not been submitted...
Survey on the occurrence of fish diseases, kidney disease in particular, in federal and some state trout and salmon hatcheries in the northeastern part of the United States (Mimeograph)
R. G. Piper
1956, Report
No abstract available at this time...
Sea lamprey control on the Great Lakes 1953 and 1954
Leo F. Erkkila, Bernard R. Smith, Alberton L. McLain
1956, Special Scientific Report - Fisheries 175
No abstract available....
The lake trout endangered in the Great Lakes
James W. Moffett
1956, Book chapter, Our endangered wildlife
No abstract available....
Geology and ore deposits of the Freeland-Lamartine district, Clear Creek County, Colorado
Jack Edward Harrison, John David Wells
1956, Bulletin 1032-B
No abstract available....
Memorandum summarizing preliminary estimates of ground-water outflow from Bunker Hill Basin at Colton Narrows, San Bernardino County, California
L.C. Dutcher
1956, Open-File Report 56-41
No abstract available....
Histopathology of kidney disease in fish
E. M. Wood, W. T. Yasutake
1956, American Journal of Pathology (32) 591-603
Kidney disease is one of the most puzzling fish diseases known to exist in the United States. In less than Io years it has invaded the Pacific Northwest, exacting a heavy toll of hatchery salmon. Its first appearance apparently was in Massachusetts where Belding and Merrill' described a disease similar...
Biology of the sea lamprey in its parasitic phase
Phillip S. Parker, Robert E. Lennon
1956, Research Report 44
The investigations conducted on sea lampreys in aquariums were concerned with the duration of the parasitic phase of life, feeding, growth, and the interrelations between predator and host fish. Observations on lampreys reared from metamorphosis to maturity were made at the Fish and Wildlife Service Laboratory at Hammond Bay,...
Geology of the Stanford-Hobson area, central Montana
J. D. Vine
1956, Bulletin 1027-J
No abstract available....
Experimental induction of blue-sac disease
K. Wolf
1956, Transactions of the American Fisheries Society (86) 61-70
Blue‐sac disease, an abnormal condition of sac fry, has been recognized for nearly 90 years. At least 23 postulated causes have been advanced, but reports of consistently reproducible results have not been found in literature. Methods whereby blue‐sac disease was induced at will are described. Closed‐system incubation, whereby metabolic wastes...
Land use and sediment yield
Luna Bergere Leopold
William L. Thomas Jr., editor(s)
1956, Conference Paper, Man’s role in changing the face of the Earth
When the vegetal cover is removed from a land surface, the rate of removal of the soil material, at least initially, increases rapidly. So well known is this principle that it hardly needs restatement.If attention is focused on any individual drainage basin in its natural state, large or small, and...
Report of the Arkansas-White-Red Basins Inter-Agency Committee
U.S. Geological Survey
1955, Report
Histopathology of fish: I. Techniques and principles
E. M. Wood, W. T. Yasutake
1955, Progressive Fish-Culturist (17) 166-171
The techniques of histopathology have been used for many years in the study of human and animal diseases. Until very recent times, however, histology has been applied to fish studies only very infrequently. This brief discussion is intended to acquaint the reader with the techniques and principles involved and to...
A mycosis-like granuloma of fish
E. M. Wood, W. T. Yasutake, W. L. Lehman
1955, Journal of Infectious Diseases (97) 262-267
Mycoses of systemic distribution are rarely observed in fresh-water fish in this country. In a recent review of atypical cell growths in fishes, Nigrelli cited the only known instance of a mycetoma in a North American fresh-water fish which occurred in the head of fingerling landlocked salmon from an Idaho...
