Determination of phosphate in natural waters by activation analysis of tungstophosphoric acid
Herbert Ellis Allen, Richard B. Hahn
1969, Environmental Science & Technology (3) 844-848
Activation analysis may be used to determine quantitatively traces of phosphate in natural waters. Methods based on the reaction 31P(n,γ)32P are subject to interference by sulfur and chlorine which give rise to 32P through n,p and n,α reactions. If the ratio of phosphorus to sulfur or chlorine is small, as...
The influence of nitrogen on heterocyst production in blue-green algae
Roann E. Ogawa, John L. Carr
1969, Limnology and Oceanography (14) 342-351
A series of experiments on heterocyst production in Anabaena variabilis provides some strong indirect evidence for the role of heterocysts in nitrogen fixation. Of the algae tested (Anabaena variabilis, A. inaequalis, A. cylindrica, A. flos-aquae, Tolypothrix distorta, Gloeotrichia echinulata, Aphanizomenon flos-aquae, Oscillatoria sp., and Microcystis aeruginosa), only those with heterocysts...
Water resources data for New Mexico, water year 1968; Part 1. Surface water records
Water Resources Division U.S. Geological Survey
1969, Water Data Report NM-68-1
The surface-water records for the 1968 water year for gaging stations, partial record stations, and miscellaneous sites within the State of New Mexico are given in this report. For convenience there are also included records for a few pertinent gaging stations in bordering States. The records were collected and computed...
Instructions for data storage-Characteristics of New York lakes-Part 1-Gazetteer of lakes, ponds and reservoirs
Phillip E. Greeson, Gary E. Williams, F.L. Robinson
1969, New York State Department of Environmental Conservation Report of Investigations RI-4
Ground-water pollution from natural gas and oil production in New York
L.J. Crain
1969, New York State Department of Environmental Conservation Report of Investigations RI-5
Water availability in urban areas of the Susquehanna River basin-A preliminary appraisal
R.D. MacNish, A. H. Randall III, H.F.H. Ku
1969, New York State Department of Environmental Conservation Report of Investigations RI-7
Floods in New York - 1967
F.L. Robinson
1969, New York State Department of Environmental Conservation Report of Investigations RI-3
Floods in New York-1968
F.L. Robison
1969, New York State Department of Environmental Conservation Report of Investigations RI-9
Progress report on in vitro culture of cyclostome and elasmobranch cells and tissues
Ken Wolf, M.C. Quimby
1969, In Vitro (4) 125-125
Time-of-travel study, Upper Hudson River, Fort Edward, New York to Troy lock and dam, Troy, New York
Harold L. Shindel
1969, New York State Department of Environmental Conservation Report of Investigations RI-10
Time-of-travel study, Mohawk River Rome, New York to Cohoes, New York
Harold L. Shindel
1969, New York State Department of Environmental Conservation Report of Investigations RI-6
The limnology of Oneida Lake-An interim report
Phillip E. Greeson, G.S. Meyers
1969, New York State Department of Environmental Conservation Report of Investigations RI-8
A hematopoietic virus disease of rainbow trout and sockeye salmon
Donald F. Amend, William T. Yasutake, Robert W. Mead
1969, Transactions of the American Fisheries Society (98) 796-804
A previously undescribed virus disease epizootic of hatchery rainbow trout (Salmo gairdneri) in British Columbia, Canada is presented. In the same locality, a similar virus disease was experienced among hatchery sockeye salmon (Oncorhynchus nerka). Typical symptoms included flashing, fecal casts, hemorrhagic areas at the base of fins, and petechial hemorrhages...
Studies of certain sulfonamide drugs for use in juvenile chinook salmon
D.F. Amend, J.L. Fryer, K.S. Pilcher
1969, Progressive Fish-Culturist (31) 202-206
Sulfamethazine, introduced to fishery medicine by Snieszko and Friddle in 1950, has been widely accepted for treatment of systemic bacterial infections of fish. When administered to fish in their diet, this drug is effective against susceptible bacteria but has the disadvantages of being slowly absorbed (Snieszko and Friddle, 1951) and...
Some factors influencing susceptibility of rainbow trout to the acute toxicity of an ethyl mercury phosphate formulation (Timsan)
Donald F. Amend, William T. Yasutake, Reginald Morgan
1969, Transactions of the American Fisheries Society (98) 419-425
This study determined the influence of water temperature (55–68° F), dissolved oxygen (4–12 ppm), water hardness as CaCO3 (20–256 ppm), and chloride ions (to 2 mM) on the susceptibility of rainbow trout (Salmo gairdneri) to the acute toxicity of ethyl mercury phosphate (EMP). The fish were exposed for one hour...
Equilibrium coexistence of three amphiboles
P. W. Robinson, H.W. Jaffe, C. Klein Jr., M. Ross
1969, Contributions to Mineralogy and Petrology (22) 248-258
Electron probe and wet chemical analyses of amphibole pairs from the sillimanite zone of central Massachusetts and adjacent New Hampshire indicated that for a particular metamorphic grade there should be a restricted composition range in which three amphiboles can coexist stably. An unequivocal example of such...
Experimental introduction of excess Ar40 into a granitic melt
W.S. Fyfe, Marvin A. Lanphere, G. Brent Dalrymple
1969, Contributions to Mineralogy and Petrology (23) 189-193
Samples of a Precambrian granite were melted in sealed capsules to produce a radiogenic Ar40 atmosphere over the melt. The amount of Ar40 incorporated in the quenched charge was then determined. Under these experimental conditions the amount of argon dissolved in the quenched melt was appreciable and could...
Petrological, magnetic and chemical properties of basalt dredged from an abyssal hill in the North-east pacific
B.P. Luyendyk, C.G. Engel
1969, Nature (223) 1049-1050
OVER the years, samples of basalt from the oceanic crust have been taken mainly from seamounts, fracture zones and ridge and rise crests1–6, and rarely from the vast fields of abyssal hills which cover a large part of the deep-sea floor. The basalt sampled from the...
Note on estimates of some parameters in hydraulic geometry
Nicholas C. Matalas, Edward J. Gilroy
1969, Journal of the International Association for Mathematical Geology (1) 115-118
[No abstract available]...
Critical review of some multivariate procedures in the analysis of geochemical data
Alfred T. Miesch
1969, Journal of the International Association for Mathematical Geology (1) 171-184
Simulation experiments have been conducted to examine the potential usefulness of R-mode and Q-mode factor methods in the analysis and interpretation of geochemical data. The R-mode factor analysis experiment consisted of constructing a factor model, using the model to generate a correlation matrix, and attempting to...
A Rubidium-Strontium study of the Twilight Gneiss, West Needle Mountains, Colorado
F. Keith Barker, Z. E. Peterman, R.A. Hildreth
1969, Contributions to Mineralogy and Petrology (23) 271-282
The Precambrian trondhjemitic Twilight Gneiss (Twilight Granite of CROSS and HOWE, 1905b) of the West Needle Mountains, southwestern Colorado, and its interlayered amphibolite and metarhyodacite yield a Rb-Sr isochron of 1,805±35 m.y. A low initial Sr87/Sr86 ratio of 0.7015 implies that metamorphism of these rocks to amphibolite facies...
Primitive and contaminated basalts from the Southern Rocky Mountains, U.S.A
B. R. Doe, Peter W. Lipman, Carl E. Hedge, H. Kurasawa
1969, Contributions to Mineralogy and Petrology (21) 142-156
Basalts in the Southern Rocky Mountains province have been analyzed to determine if any of them are primitive. Alkali plagioclase xenocrysts armored with calcic plagioclase seem to be the best petrographic indicator of contamination. The next best indicator of contamination is quartz xenocrysts armored with clinopyroxene. On the rocks and...
Crystal structure of howlite, Ca2SiB5O9(OH)5
J.J. Finney, I. Kumbasar, J. Robert Clark
1969, Die Naturwissenschaften (56) 33-34
[No abstract available]...
History of the geomagnetic field
Richard Rayman Doell
1969, Journal of Applied Physics (40) 945-954
Direct measurements of the direction and strength of the earth's magnetic field have provided a knowledge of the field's form and behavior during the last few hundreds of years. For older times, however, it has been necessary to measure the magnetism of certain rocks to learn what the geomagnetic field was like. For example, when a...
[Book review] Wagstaffe, R. and J. H. Fidler. The Preservation of Natural History Specimens. Vol. 2, Philosophical Library. 1968. 404 pp
R.C. Banks (compiler)
1969, Atlantic Naturalist (24) 54
