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Articles 29521 - 29550 of 29714
Full-Text Articles in Physical Sciences and Mathematics
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.
A Morning's Consignment Of Proboscidean Freight, Erwin Hinckley Barbour
A Morning's Consignment Of Proboscidean Freight, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
In the accompanying cut the array of great tusks outlined through their rough crates may lack attractiveness, nevertheless the assemblage is quite out of the ordinary, and seems worth recording in bulletin form. In all museums, and like institutions, freight and express deliveries are matters of daily routine; however, the morning's freight shown in the cut is unique. Herein is represented the more showy portion of the proboscidean freight received at the Nebraska State Museum in a single consignment, in the field season of 1930. The other boxes of mammoth skulls, jaws, and bones, received at the same time, are …
The Milford Mastodon, Mastodon Moodie I, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour
The Milford Mastodon, Mastodon Moodie I, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
In developing the hydro-electric plant of the Iowa and Nebraska Light and Power Company, a number of dams were thrown across the Blue River and its branches. One of these, known as Dam No.7, was built across the West Blue, about nine miles southwest of Milford, Seward county, Nebraska. This dam raised the water well above the ordinary river level, and flooded fifteen or twenty acres of valley land. The impounded water soaked into, and washed against, the base of a twenty-foot bank of cross-bedded sand, until some time during the winter of 1931, a portion of the bank near …
A New Amebelodont, Torynobelodon Barnumbrowni, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour
A New Amebelodont, Torynobelodon Barnumbrowni, Sp. Nov. A Preliminary Report, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
The subfamily of longirostrine mastodonts known as the Amebelodontinae have been so recently discovered and described that as yet they; are little known by the citizens of this state. They are most briefly and directly described as shovel-tusked mastodons. The first one found, namely Amebelodon fricki, was secured in April 1927, and was published June 1927. In the meantime, many other examples of Amebelodonts have been added to the Morrill Palaeontological Collections of the Nebraska State Museum. The exact number cannot be stated until the material shipped in from the field during the current season is unpacked, cleaned, and identified. …
Evidence Of Dinosaurs In Nebraska, Erwin Hinckley Barbour
Evidence Of Dinosaurs In Nebraska, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
Nebraska has long been a collecting ground famous for its fossil mammals, but as yet no dinosaurian bones have been reported, nor have they been expected. The distal end of a finely preserved femur, however, has recently been brought to light, supposedly occurring in position in the Dakota formation of eastern Nebraska. It was discovered, collected, and donated by Mr. J. B. White, (University of Nebraska, Law, class of 1899) on his farm two miles south of Decatur, in northeastern Burt County, near the Missouri River. It was found in undoubted Dakota sand associated with many leaf impressions. This is …
Paleontology Of The Upper Cretaceous Of Chaco Canyon, New Mexico, Richard Pickard Vann
Paleontology Of The Upper Cretaceous Of Chaco Canyon, New Mexico, Richard Pickard Vann
Earth and Planetary Sciences ETDs
It is the purpose of this paper to describe some Upper Cretaceous invertebrate fossils (including descriptions of an algal form, and some vertebrate teeth) collected by the writer in Chaco Canyon, New Mexico, and to give a brief summary of the physiography and stratigraphy of the region.
Some Results Of Magnetometric Surveying In Missouri, John Gustave Grohskopf
Some Results Of Magnetometric Surveying In Missouri, John Gustave Grohskopf
Masters Theses
"This thesis describes the results of a series of magnetic surveys carried on in the state of Missouri. The financial assistance required for the work was granted in the form of a fellowship to the author by the Industrial Club of the Industrial Bureau of St. Louis; Mr. George S. Smith, Director. Since the progress of any industrial center is accelerated by the mineral resources contiguous to it, the Industrial Club believed that further research upon known and also undeveloped mineral deposits might result in the development of them. It was decided that geophysical methods of research might show greater …
Studies In The Distribution Of Orbitolina Walnutensis Carsey, Shirley Alfred Lynch
Studies In The Distribution Of Orbitolina Walnutensis Carsey, Shirley Alfred Lynch
Masters Theses
"This paper has shown the stratigraphic and geographic range of the foraminifer, Orbitolina walnutesis Carsey. Samples from sections in thirteen counties in north and north central Texas have been studied. Many geologists have previously studied these sections in detail, correlation them and published the results"--Summary and Conclusions, page 73.
Age Relationships Of Ore Deposits Of Southwestern Montana (A Microscopic Study), Charles R. Trueworthy
Age Relationships Of Ore Deposits Of Southwestern Montana (A Microscopic Study), Charles R. Trueworthy
Bachelors Theses and Reports, 1928 - 1970
Although considerable work has been undertaken by some prominent geologists, the best known of which is that of Paul Billingsley and J. A. Grimes', in investigating the ore deposits of the Boulder Batholith and surrounding area, there has not been any complete microscopic investigation of these deposits, as a whole, published in the literature. With this in mind it was suggested to the writer by Professor Paul A. Schafer, of the Montana School of Mines, that a microscopic study of the ores of this region would be a worthwhile geologic problem.
It was thought that the mineral association and the …
A New Crinoid Slab, A Bit Of Mississipian Sea Bottom, Erwin Hinckley Barbour
A New Crinoid Slab, A Bit Of Mississipian Sea Bottom, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
Crinoids are popularly known as stone-lilies, featherstars, and sea-lilies. The word lily is a misnomer, and many, misled by the name and by the lily-like form, associate crinoids with the plant kingdom. The name, feather-star, seems explicit for it refers to the feathery arms surrounding the cup or calyx, and expresses relationship to the starfishes and their kind. The cup is attached to a stem, and the stem is anchored to the ocean floor by so-called roots, which are really hold-fasts, or anchors. These features may be seen in the diagram at the end.
The Giant Beaver, Castoroides, And The Common Beaver, Castor, In Nebraska, Erwin Hinckley Barbour
The Giant Beaver, Castoroides, And The Common Beaver, Castor, In Nebraska, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
Respecting the giant beaver, Castoroides, in Nebraska, four occurrences can be reported. Of rodents in general the dawn. was in the early Eocene, at which time there were in existence certain squirrel-like members of the order. Rodents are a persistent group, and are among the smallest, most distinctive, most numerous and widely distributed orders of terrestrial mammals. No other order boasts of so many species, the number being between nine hundred and one thousand. In spite of wide divergencies and modifications adapting them to various modes of life, such as climbing, burrowing, swimming, flying, leaping, and running, there is remarkable …
The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour
The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum
The remains of no less than eight fossil musk-oxen are already known in Nebraska, of which one is preserved in the Museum at Hastings, Nebraska, and seven in the State Museum at Lincoln. This is a large number to be recorded in anyone state. As late as 1891 authors wrote that but two examples of musk-oxen were known in the United States, one from Kentucky, and one from Arkansas, if, indeed, they be valid species. Now that pioneer days are well behind this commonwealth, and that there is a growing sentiment for exploration and proper display of the State's resources, …
A Preliminary Study Of The Separation Of The Copper Sulfides From Sphalerite And The Effect Of Certain Reagents On Some Of The Pure Copper Minerals In Synthetic Mixtures, Gailen T. Vandel
Bachelors Theses and Reports, 1928 - 1970
The problem of separating the copper sulfide minerals from sphalerite, in copper - zinc ores, has been a difficult one. This is largely due to the lack of adequate research and the small amount of data obtainable on the behavior of copper and zinc sulfide minerals in flotation circuits.
The Geology And Petrography Of A Portion Of Marlboro And Brattleboro Townships, Windham County, Vermont, Elizabeth Putnam Richards
The Geology And Petrography Of A Portion Of Marlboro And Brattleboro Townships, Windham County, Vermont, Elizabeth Putnam Richards
Honors Papers
Location and area. The territory covered in this report is a roughly rectangular area of about fifty square miles. It is situated partly in Marlboro and partly in Brattleboro township, in Windham county, southeastern Vermont. It runs from 42° 50' to 42° 55' north latitude and from 72° 37' to 72° 47' west longitude. Geologically the region is a part of the Green Mountains while physiographically the area is in the New England Upland section.
Statement of the Problem and Methods. The origin, history and correlation of the country rock of the region is the particular problem with which this …
Geology And Acid Intrusions Of Marlboro Township, Vermont, Stanley Gordon Elder
Geology And Acid Intrusions Of Marlboro Township, Vermont, Stanley Gordon Elder
Honors Papers
It is the aim of this paper to examine the mineralization resulting from the intrusion of acid dikes and veins into the schists of Marlboro township, Vermont, and to give a brief account of the geology of the area.
The problem of mineralization in southern Vermont is one which has been treated very slightly and is one which is deserving of more study than it has received. This problem results from the presence of numerous acid igneous masses in all the formation of the region. Petrographic research in the igneous intrusions was done partially with the hope that the study …
Lincoln's Water Supply Problem
The Conservation Of Nebraska's Water Resources, G. E. Condra
The Conservation Of Nebraska's Water Resources, G. E. Condra
George E. Condra Publications
Oxygen is the first immediate necessity of life and water is second. Both directly and indirectly and more than soil, water is our most basic resource. It is the universal solvent and without it there would be no life, and, of course, no agriculture and industry.
Lincoln's Water Supply Problem
Amebelodon Sinclairi Sp Nov., Erwin H. Barbour
Amebelodon Sinclairi Sp Nov., Erwin H. Barbour
Bulletin of the University of Nebraska State Museum
Amebelodonts are so new and so rare that even fragmentary facts relative to the group seem worth publishing. The specimen under consideration is a mandibular tusk found on the farm of Mr. A. S. Keith, Freedom, Frontier County, Nebraska, on the Morrill Geological Expedition of 1928, and is numbered 1-17-7-28, S. and L., the collectors being Bertrand Schultz and John LeMar, both of the class of 1931, the University of Nebraska. The formation was Late Pliocene or Pleistocene.
First Forms Of Art : Pt.2. Crystal Forms, Hans Carl Perleberg, T. H. Schenk
First Forms Of Art : Pt.2. Crystal Forms, Hans Carl Perleberg, T. H. Schenk
Nature
2 v. : 80 leaves of plates ; 36 cm. Cover title. In portfolio. "This collection of 156 different forms of crystals was produced by microphotography. Professor T.H. Schenk, of Austria, experimented several years in order to bring about interesting designs through the action of acids on various metals..."--Pt. 2., cover page verso. Pt. 1. Nature -- Pt. 2. Crystal forms. Library has Pt. 2 only ; Plates: 1-20.
Geological Report Of The Shoshone Region, Idaho, Eldred R. Harrington
Geological Report Of The Shoshone Region, Idaho, Eldred R. Harrington
Earth and Planetary Sciences ETDs
This report sets forth the results of a five year study of the Shoshone region, Idaho. The region is situated in south-central Idaho on both sides of the Snake river. The southern and larger part of the region lies in the Columbia River Plateau province while the northern and smaller part of the area lies in the Northern Rocky Mountains province.
An areal geology map and several cross-sections accompany the report which is further illustrated by numerous photographs.
First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins
First Annual Report On The Geology Of The State Of Maine, Lucius H. Merrill, Edward H. Perkins
Maine Collection
First Annual Report on the Geology of the State of Maine by Lucius H. Merrill, State Geologist and Edward H. Perkins, Assistant Geologist, Augusta, 1930.
Articles: Maine Granites / Report on Feldspar Quarries Visited Aug. 21-24, 1929 / Coal / Petroleum and Natural Gas in Maine / The Minerals of Maine / Minerals of Maine Index, By Mineral Names / Minerals of Maine, Index by Towns / Minerals Found at Bennett's Quarry Buckfield, Maine / List of Minerals Found at Newry, Maine / List of Minerals Found in Rumford, Maine / The Natural History of Maine Minerals (Perkins) / …
Revision Of The Jefferson City Formation In The Rolla Quadrangle, James Shelley Cullison
Revision Of The Jefferson City Formation In The Rolla Quadrangle, James Shelley Cullison
Masters Theses
"The geology of the Rolla quadrangle was mapped by Lee in 1912. At that time all the dolomitic strata above the Roubidoux and beneath the Carboniferous formations in this area were placed in the Jefferson City. A more detailed study of the stratigraphy of the whole Ozark region by Ulrich has shown that some of the strata which had been included in the Jefferson City formation on lithologic grounds are not equivalent to the dolomites in the type section at Jefferson City, Missouri"--Introduction, page [1].
The Mandible Of Amebelodon Fricki, Erwin H. Barbour
The Mandible Of Amebelodon Fricki, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum
The type specimen of the genus Amebelodon is installed in the Nebraska State Museum, the University of Nebraska, Lincoln. It consists of a mandible with tusks and teeth, all of which are dense and perfect, barring minor cracks and breaks. One toe bone and part of a rib found associated with this mandible may belong to this animal. It was discovered by Mr. A. S. Keith on his farm near Freedom, Frontier County, Nebraska; was secured for the palaeontological collections of Hon. Charles H. Morrill by Mr. Phillip Orr, April 4, 1927; was briefly described and figured in a Museum …
The Chromite Deposits Of Stillwater And Sweetgrass Counties, Montana, Uuno Sahinen
The Chromite Deposits Of Stillwater And Sweetgrass Counties, Montana, Uuno Sahinen
Bachelors Theses and Reports, 1928 - 1970
In writing this report, two objects were kept in mind, (1) to explain, if possible, the origin of the chromite deposits found in Sweetgrass and Stillwater Counties, and (2) to bring up to date all information on these deposits which had thus far been available.
The work done consisted of study of the rocks and ores of the area under the microscope, both as thin sections and as polished sections, practically all of which was done at the Montana State School of Mines, during the school year of 1928 - 1929.
The rock specimens and much information as to their …