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Articles 58411 - 58440 of 58709
Full-Text Articles in Physical Sciences and Mathematics
The Missouri Valley Traverse In Iowa North Of The Jones Point Deformation, G. E. Condra
The Missouri Valley Traverse In Iowa North Of The Jones Point Deformation, G. E. Condra
Conservation and Survey Division
No abstract provided.
The Middle River Traverse Of Iowa, G. E. Condra, J. E. Upp
The Middle River Traverse Of Iowa, G. E. Condra, J. E. Upp
Conservation and Survey Division
No abstract provided.
The Red Oak-Stennett-Lewis Traverse Of Iowa, G. E. Condra
The Red Oak-Stennett-Lewis Traverse Of Iowa, G. E. Condra
Conservation and Survey Division
No abstract provided.
Faunal Lists Of The Tertiary Vertebrata Of Nebraska And Adjacent Areas, H. J. Cook, M. C. Cook
Faunal Lists Of The Tertiary Vertebrata Of Nebraska And Adjacent Areas, H. J. Cook, M. C. Cook
Conservation and Survey Division
No abstract provided.
The Recovery Of Copper In Sulphide Ores By Roasting, Leaching, And Electrolysis, Jack S. Greenough
The Recovery Of Copper In Sulphide Ores By Roasting, Leaching, And Electrolysis, Jack S. Greenough
Bachelors Theses and Reports, 1928 - 1970
Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast. Copper sulphate is soluble in water, so acid will be saved in the leaching process if copper sulphate is present. The iron in the copper sulphide ores is present as pyrite, or in combinations as bornite, or chalcopyrite.
Some Notes On The Composition Of "Copper Pitch", Richard R. Matthew
Some Notes On The Composition Of "Copper Pitch", Richard R. Matthew
Bachelors Theses and Reports, 1928 - 1970
A supply of so-called "copper pitch" ore was received by the Montana Bureau of Mines and Geology in response to a request by them from a resident of Kalispell, who had previously sent a specimen to the Bureau for a mineralogical analysis.
Since this material was little known and had apparently received but little study under a reflecting microscope, it was thought that such a study might throw some light on the mineralogical and chemical composition of the material.
Joint Planes In The Rhyolites Of The Butte District, Montana, John B. Hopkins
Joint Planes In The Rhyolites Of The Butte District, Montana, John B. Hopkins
Bachelors Theses and Reports, 1928 - 1970
The problem herein discussed deals with the pointing planes found in the area of rhyolite located in the northwestern portion of the Butte District. The question to be determined was whether or not the pointing planes in the rhyolites could be classified with the Butte Ore fissure systems.
A Bentonite Deposit Near Warm Springs, Montana, R. H. Larson
A Bentonite Deposit Near Warm Springs, Montana, R. H. Larson
Bachelors Theses and Reports, 1928 - 1970
This report deals with a bentonite deposit recently developed, approximately seven miles northeast of Warm Springs, Montana. A group of claims have been staked on the deposit and are owned by the Lincoln Mining Company of Anaconda, Montana. The company also has several claims prospected for silver one mile from its present site of operations, but the silver prospects have failed to produce. The bentonite deposit was discovered incidentally during the course of other development work, and at present two adits have been driven into the side of a mountain, each crosscutting a vein-like mass of bentonite varying from two …
The Aplitic Body Bordering Roosevelt Drive South Of Butte, Montana, Edward B. Trueworthy Jr.
The Aplitic Body Bordering Roosevelt Drive South Of Butte, Montana, Edward B. Trueworthy Jr.
Bachelors Theses and Reports, 1928 - 1970
The area studied consists of a large body of aplite situated 12 miles south of Butte. It extends eastward almost to the Butte-Pipestone road, southward to Lime Kiln Hill and westward a distance of 3000 feet.
The petrographic work was supplemented by a map of the area. Special attention was given to those frequent "Limonite Specks" found in the aplite.
The Rate Of Precipitation Of Copper Aluminide In The Silver Rich Silver-Copper-Aluminum Alloys, Thomas Finley Mcbride
The Rate Of Precipitation Of Copper Aluminide In The Silver Rich Silver-Copper-Aluminum Alloys, Thomas Finley Mcbride
Bachelors Theses and Reports, 1928 - 1970
In order to determine the best annealing temperature at which to age-harden the alloys, hardness tests on specimen annealed for different lengths of time at different temperatures were made.
The Effect Of Hydrogen Overvoltage On The Electrolytic Deposition Of Zinc, John M. Munzenrider, Kenneth O. Sweeney
The Effect Of Hydrogen Overvoltage On The Electrolytic Deposition Of Zinc, John M. Munzenrider, Kenneth O. Sweeney
Bachelors Theses and Reports, 1928 - 1970
In the deposition of metallic zinc by electrolysis from neutral or acid solution, little difficulty is experienced provided certain impurities are absent from the electrolyte. The use of the process has long been considered as a potential source, patents on the process having been issued as early as 1880. However, the early experimenters failed to realize the importance of impurities in the electrolyte, and for this reason, the process suffered several severe setbacks when commercial plants were built.
The Electrolytic Deposition Of Chromium Upon Aluminum, E. Fults, L. D. Voerge
The Electrolytic Deposition Of Chromium Upon Aluminum, E. Fults, L. D. Voerge
Bachelors Theses and Reports, 1928 - 1970
The purpose or this investigation is primarily to determine the best conditions for plating chromium on aluminum. The work was carried out with the hope of obtaining coherent deposits, and of determining the conditions under which such deposits may be duplicated.
Ua66/8/5 Kyrock - The World's Best Pavement, George Huntington Clark, Ellen Churchill Semple Geographical Society
Ua66/8/5 Kyrock - The World's Best Pavement, George Huntington Clark, Ellen Churchill Semple Geographical Society
Student Organizations
Speech regarding Kyrock by George Huntington Clark, consulting geologist to the Kentucky Rock Asphalt Company given at a meeting of the Ellen Churchill Semple Geographical Society.
The Mandible Of Platybeldon Barnumbrowni, Erwin Hinckley Barbour
The Mandible Of Platybeldon Barnumbrowni, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
Platybelodon barnumbrowni was described originally as Torynobelodon barnumbrowni.1 The Nebraska State Museum was visited and this unique specimen studied by Dr. Henry Fairfield Osborn and Dr. Walter Granger, August seventeenth and eighteenth, nineteen hundred and thirty-two. It is the opinion of both that this specimen belongs properly to their Mongolian genus Platybelodon. With certain reservations the writer wishes to defer instantly to their judgment, which is based on unequalled experience. It is perfectly apparent that this form makes a close approach to the remarkable Platybelodons found by Granger and Andrews in the Gobi Desert of Mongolia, later figured and …
A New Oreodont Slab, Erwin Hinckley Barbour, C. Bertrand Schultz
A New Oreodont Slab, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum
A slab of pale, reddish-brown sandstone, exhibiting the articulated skeletons of two oreodonts, has been placed on display in the west corridor on the first floor of Morrill Hall. Apparently, a female and well-grown young one lay down together and perished, perhaps from disease, or from chilling winds. They must have been buried quickly, for all of the bones are present, are in perfect condition, and are in articulation, especially in the old one. In the adult the articulation is complete from the ungual phalanges of the two forefeet to the terminal caudal, even though in the figure the skeleton …
The Mounted Skeleton Of Bison Occidentalis, And Associated Dart-Points, Erwin Hinckley Barbour, C. Bertrand Schultz
The Mounted Skeleton Of Bison Occidentalis, And Associated Dart-Points, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum
A composite skeleton of Bison occidentalis was mounted and installed in its case on the lower floor of Morrill Hall, on April 22, 1932. The skeleton in itself is attractive because of its size and excellent preservation, and is rendered additionally interesting by two dart-points, one found under the scapula, and the other under the ribs.
The Scottsbluff Bison Quarry And Its Artifacts, Erwin Hinckley Barbour, C. Bertrand Schultz
The Scottsbluff Bison Quarry And Its Artifacts, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum
The association of artifacts with extinct bison bones in a quarry near Grand Island, Hall County Nebraska,1 and from one in Custer County, Nebraska, have already been reported.2 In the meantime, continued search has been rewarded, and a large bed of fossil bison with associated flint implements found. The discovery, if not of actual consequence, at least adds something to the accumulating evidence that Pleistocene man in America may have been a reality.
Association Of Artifacts And Extinct Mammals In Nebraska, Bertrand Schultz
Association Of Artifacts And Extinct Mammals In Nebraska, Bertrand Schultz
Bulletin of the University of Nebraska State Museum
During the past four years the Nebraska State Museum, under the directorship of Dr. Erwin Hinckley Barbour, has been making even more extensive palaeontological collections throughout Nebraska than heretofore. As work progresses, especially with fossil bison and mammoth, there is increasing evidence that man appeared in Nebraska much earlier than is generally believed. Two occurrences of artifacts associated with fossil bones will constitute the main theme of this paper.
The Skull And Mandible Of Mastodon Moodiei, Erwin Hinckley Barbour
The Skull And Mandible Of Mastodon Moodiei, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
The mandible of the Milford mastodon, Mastodon moodiei, was figured and described in Bulletin 24, December, 1931. In the meantime, the fragments of both skull and mandible have been properly cleaned, put together, and mounted for exhibition. No essential parts of the skull or mandible are wanting or are seriously damaged.
The Articulated Skeleton Of Eubelodon Morrilli, Erwin Hinckley Barbour
The Articulated Skeleton Of Eubelodon Morrilli, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
The mounted sketleton of Eubelodon morrilli was installed in the west wall case of Elephant Hall December 31, 1931, and has attracted the attention and favorable comments of citizens and other guests. It should be explained that the case in which it is displayed is ten feet deep, sixteen feet high, and extends the length of the hall. Altogether it is a large and impressive mount which reflects credit upon its preparators, and is an important and instructive addition to the Morrill Palaeontological Collections. The pose is spirited and interesting, and the action is all that can be expected of …
Association Of An Arrow Point With Bison Occidentals In Nebraska, F. G. Meserve, Erwin H. Barbour
Association Of An Arrow Point With Bison Occidentals In Nebraska, F. G. Meserve, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum
Of late, anthropological literature relative to the association of man and extinct mammals, especially bison and mammoth, has received many contributions from various and widely separated sources. Naturally the question has arisen whether man's advent in America is somewhat earlier than has been generally admitted, or whether certain extinct animals have persisted longer than has been realized. The issue is one of such importance and interest that even minor contributions seem desirable. It is well understood by all that the evidence, when submitted, will be properly weighed, and that conservative judges may rule out much or all of the testimony. …
The Paleontology And Stratigraphy Of The Magdalena Group Of Northern And Central New Mexico, Wallace A. Bisbee
The Paleontology And Stratigraphy Of The Magdalena Group Of Northern And Central New Mexico, Wallace A. Bisbee
Earth and Planetary Sciences ETDs
No abstract provided.
Brachiopoda Of The Pennsylvanian System In Nebraska, C. O. Dunbar, G. E. Condra
Brachiopoda Of The Pennsylvanian System In Nebraska, C. O. Dunbar, G. E. Condra
Conservation and Survey Division
No abstract provided.
The Articulated Skeleton Of Titanotherium, Erwin H. Barbour
The Articulated Skeleton Of Titanotherium, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum
The skeleton of a titanotherium, stored since 1894, was installed in the west corridor of Morrill Hall, April 28, 1931. In the meantime the specimen has been visited by many citizens, women's clubs, and especially by delegations of school children, boy scouts, and like organizations, from various parts of the State and elsewhere. Repeated requests for a popular report on this particular specimen actuates the writing of this leaflet. Titanotheres were by far the largest creatures of Oligocene time in Nebraska. In point of size they are called gigantic, elephantine, and titanic. The titans of Greek mythology were giants, and …
A Study Of The Colloid Obtained From Weathered Lignite, Cecil O. Lohn
A Study Of The Colloid Obtained From Weathered Lignite, Cecil O. Lohn
Theses and Dissertations
When Lignite is exposed to the action of weather it undergoes various changes, probably due to oxidation. Surface beds of lignite are often rejected by the miners as inferior coal, due to the weathered condition. But when this weathered lignite is treated with sodium hydroxide, and the resulting solution allowed to evaporate to dryness, there is left a hard, shiny substance very similar in appearance to hard coal. This dried product has been exploited under the name of Dakolite. When dispersed in water this product makes a very good wood stain.
Tests made on Dakolite show that it has colloidal …
State Geologist's Report On The Geology Of Maine 1930-1932, Joseph Conrad Twinem, Edward H. Perkins
State Geologist's Report On The Geology Of Maine 1930-1932, Joseph Conrad Twinem, Edward H. Perkins
Maine Collection
State Geologist's Report on the Geology of Maine 1930-1932
Joseph Conrad Twinem , State Geologist and Edward H. Perkins , Assistant Geologist
Second Series - Augusta 1932
Sections: Bibliography, Economic Geology, General Geology, Paleontology, Structural Geology
Ua66/8/3 Second Rocky Mountain Field Trip, Wku Geography & Geology
Ua66/8/3 Second Rocky Mountain Field Trip, Wku Geography & Geology
WKU Archives Records
Report on the Second Rocky Mountain Field Trip taken by faculty and students of the WKU Geography & Geology department.
Preliminary Construction Of A Photo-Electric Cell Concentrator, Stanley S. Williams
Preliminary Construction Of A Photo-Electric Cell Concentrator, Stanley S. Williams
Bachelors Theses and Reports, 1928 - 1970
The separation of the valuable portion from the waste portion of an ore is an individual problem for every ore. However, the various methods for accomplishing this end, more or less classify themselves by the physical properties of the constituents of the ore. Most of the properties of minerals have been utilized in some way or other to affect the separation of the valuable from the invaluable parts. Practically nothing has been done so far with color and luster to attain this purpose.
It is believed that the photo—electric cell could also be used in concentrating a certain class of …
The American Mastodon With Mandibular Tusks, Erwin H. Barbour
The American Mastodon With Mandibular Tusks, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum
Mastodons and mammoths, represented by their relics, are so frequently exposed by shovel, plow, road grader, dredge, and rains, that they have become household words. They are plainly the commonest and best-known vertebrate fossils. They were fortuitously entombed, and are now accidently found. Their relics, though numerous, never represent the grand total that lived. Indeed, it was a rare individual that fell where circumstances favored rapid interment and consequent preservation; the grand majority fell in the open where their bones suffered rapid and complete decay. The American mastodon occupies a position between the long-jawed, long-skulled, four-tusked ancestor called Palaeomastodon, and …
The Environment Of The Prairie, J. E. Weaver, W. J. Himmel
The Environment Of The Prairie, J. E. Weaver, W. J. Himmel
Conservation and Survey Division
No abstract provided.