Determination of fluorine in organic compounds: Microcombustion method
H. S. Clark
1951, Analytical Chemistry (23) 659-661
A reliable and widely applicable means of determining fluorine in organic compounds has long been needed. Increased interest in this field of research in recent years has intensified the need. Fluorine in organic combinations may be determined by combustion at 900° C. in a quartz tube with a platinum catalyst,...
Rainfall frequency: An aspect of climatic variation
Luna Bergere Leopold
1951, Eos, Transactions, American Geophysical Union (32) 347-357
Analyses which have been made in the past have shown no significant trend in annual values of rainfall during the period of rainfall records in the southwestern United States. In the present study, frequency of daily rains of various sizes are analyzed for four long-record stations in New Mexico. It...
Kansas-Missouri floods of July 1951
Water Resources Division, U.S. Geological Survey
1951, Circular 151
No abstract available....
Total intensity aeromagnetic map and accompanying aeromagnetic profiles, southern part of Otter Tail County, Minnesota
J. R. Balsley Jr., M. E. Hill, J. L. Meuschke
1951, Geophysical Investigations Map 50
No abstract available....
Total intensity aeromagnetic map and accompanying aeromagnetic profiles, northern part of Otter Tail County, Minnesota
J. R. Balsley Jr., M. E. Hill, J. L. Meuschke
1951, Geophysical Investigations Map 49
No abstract available....
Cooperative investigation of precision and accuracy in chemical analysis of silicate rocks
W.G. Schlecht
1951, Analytical Chemistry (23) 1568-1571
This is the preliminary report of the first extensive program ever organized to study the analysis of igneous rocks, a study sponsored by the United States Geological Survey, the Massachusetts Institute of Technology, and the Geophysical Laboratory of the Carnegie Institution of Washington. Large samples of two typical igneous rocks,...
Ground-water situation in Oregon
R. C. Newcomb
1951, Report
The water that occurs beneath the land surface follows definite and well-known rules of hydraulics, the same as water on the surface. However, ground water must be studied by methods, some of which are unique to that type of water occurrence, in order to evaluate the part it plays in...
Assigned quadrangle names in the United States and its territories and island possessions
1951, Report
No abstract available....
The geology and geography of the Paunsaugunt region, Utah
H. E. Gregory
1951, Professional Paper 226
No abstract available....
Decline of the lake trout fishery in Lake Michigan
Ralph Hile, Paul H. Eschmeyer, George F. Lunger
1951, Fishery Bulletin of the U.S. Fish and Wildlife Service (52) 77-95
No abstract available....
Geology and ground-water resources of the Santa Maria Valley area, California, with a section on surface-water resources
George Frank Worts, H. G. Thomasson Jr.
1951, Water Supply Paper 1000
No abstract available....
Determination of lithium in rocks: Fluorometric method
C. E. White, M. H. Fletcher, J. Parks
1951, Analytical Chemistry (23) 478-481
The gravimetric method in general use for the determination of lithium is tedious, and the final weighed product often contains other alkali metals. A fluorometric method was developed to shorten the time required for the analysis and to assure that the final determination is for lithium alone. This procedure is...
Aromatic fluorine compounds. II. 1,2,4,5-Tetrafluorobenzene and related compounds
G. C. Finger, F.H. Reed, D.M. Burness, D.M. Fort, R.R. Blough
1951, Journal of the American Chemical Society (73) 145-149
The synthesis and properties of 1,2,4,5-tetrafluorobenzene and a group of bromofluoro and chlorofluorobenzenes with a predominating 1,2,4,5-structure are described. Flash point and surface tension data for the fluorinated benzenes and the influence of chlorine substitution upon these values were studied. Under nitration conditions, 1,2,4,5-tetrafluorobenzene will not form a nitro derivative,...
Determination of molybenum in soils and rocks: A geochemical semimicro field method
F. N. Ward
1951, Analytical Chemistry (23) 788-790
Reconnaissance work in geochemical prospecting requires a simple, rapid, and moderately accurate method for the determination of small amounts of molybdenum in soils and rocks. The useful range of the suggested procedure is from 1 to 32 p.p.m. of molybdenum, but the upper limit can be extended. Duplicate determinations on...
Downstream movement of recently transformed sea lampreys, Petromyzon marinus, in Carp Lake River, Michigan
Vernon C. Applegate, Clifford L. Brynildson
1951, Transactions of the American Fisheries Society (81) 275-290
In order to obtain more precise information concerning the downstream movement of recently transformed sea lampreys, a trapping device was operated in the Carp Lake River, Emmet County, Michigan, from October, 1948, to July, 1951. The period of downstream migration typically extends from the latter part of October to...
Treatment with antibiotics of ulcer disease and furunculosis in trout (Mimeograph)
S. F. Snieszko
1951, Report
No abstract available at this time...
The quantitative determination of calcite associated with the carbonate-bearing apatites
Sol R. Silverman, Ruth K. Fuyat, Jeanne D. Weiser
1951, Trace Elements Investigations 118
The CO2 combined as calcite in carbonate-bearing apatites as been distinguished from that combined as carbonate-apatite, or present in some form other than calcite, by use of X-ray powder patterns, differential thermal analyses, and differential solubility tests. These methods were applied to several pure apatite minerals, to one fossil bone,...
Uranium occurrences on the Blue Jay Claim, White Signal District, Grant County, New Mexico
Harry C. Granger, Herman L. Bauer Jr.
1951, Trace Elements Memorandum 117
A discovery of secondary uranium minerals on the Blue Jay claim was reported in 1949 and the occurrence was examined by the authors in March 1950, The Blue Jay claim is about three-fourths of a mile south of White Signal, Grant County, N. Mex. in sees, 23 and 26, T....
A state‐wide program of periodic measurements of ground‐water level In Nebraska
L.K. Wenzel
1951, Eos, Transactions, American Geophysical Union (16) 495-498
The precipitation in Nebraska has been considerably less than normal in the last four years, and in consequence the ground‐water level in many parts of the State has declined to a marked extent. Moreover, in some parts of Nebraska the ground‐water level has declined as the result of land‐drainage, and in other parts it has risen as the result of irrigation with water diverted from streams. These changes in ground‐water level produced by drainage, irrigation, and decreased precipitation have caused...
Ground water in the Escalante Valley, Beaver, Iron, and Washington Counties, Utah
Philip F. Fix, W.B. Nelson, B. E. Lofgren, R.G. Butler
1950, Technical Publication 6
Escalante Valley in southwestern Utah is one of the largest and most important ground-water areas of the State, with 1,300 square miles of arid land and an additional 1,500 square miles in its tributary drainage basin. Ground water is obtained from gravel and sand beds in the unconsolidated valley fill....
Pollution in the lower Columbia Basin in 1948 with particular reference to the Willamette River
F. F. Fish, R.R. Rucker
1950, Special Scientific Report - Fisheries 30
Development of the salmon resources of the lower Columbia River Basin appears as sound insurance against the threat of a serious reduction in the runs to the upper river areas through the multiple-purpose programs of water development now under way by the Corps of Engineers, the Bureau of Reclamation, and...
Summary review of analytical data pertaining to uranium content or radioactivity of domestic shales
Perry Foote Narten, J.E. Crawford, Arthur Pierce Butler Jr.
1950, Trace Elements Memorandum 240
No abstract available....
Pitchblende deposits at the Wood and Calhoun mines Central City Mining District, Gilpin County, Colorado
Frank R. Moore, C.R. Butler
1950, Trace Elements Memorandum 198
No abstract available....
Reconnaissance radiometric examination of Spokane Molybdenum Mines Property Lincoln County, Washington
John Stewart Vhay
1950, Trace Elements Memorandum 197
No abstract available....
Uranium content of coal samples from the Mountain Home coal mine Converse County, Wyoming
Norman MacLaren Denson
1950, Trace Elements Memorandum 195
No abstract available....
