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Articles 58591 - 58620 of 58709

Full-Text Articles in Physical Sciences and Mathematics

The Iron Ore Ranges Of Minnesota, And Their Differences, N. H. Winchell Jan 1911

The Iron Ore Ranges Of Minnesota, And Their Differences, N. H. Winchell

Journal of the Minnesota Academy of Science

No abstract provided.


Report Of The Second Annual Nebraska Conservation And State Development Congress, G. E. Condra, W. G. Whitmore, W. R. Mellor Jan 1911

Report Of The Second Annual Nebraska Conservation And State Development Congress, G. E. Condra, W. G. Whitmore, W. R. Mellor

George E. Condra Publications

No abstract provided.


Ua94/6/2/7 Physiography Notebook, Carl Ellis Jan 1911

Ua94/6/2/7 Physiography Notebook, Carl Ellis

Student/Alumni Personal Papers

Atlas Science Table for Laboratory Notes and Drawings in Physiography notebook used by Carl Ellis for Robert Green's class.


A New Carboniferous Coral "Craterophyllum Verticillatum", Erwin Kinckley Barbour Jan 1911

A New Carboniferous Coral "Craterophyllum Verticillatum", Erwin Kinckley Barbour

Conservation and Survey Division

No abstract provided.


Bulletin No. 109 - The Nitrogen And Humus Problem In Dry-Land Farming, Robert Stewart Aug 1910

Bulletin No. 109 - The Nitrogen And Humus Problem In Dry-Land Farming, Robert Stewart

UAES Bulletins

The effect of cultivation and the growth of crops upon the nitrogen and humus content of soils has been studied by various investigators, both in America and Europe. In general, the results of the various investigations indicate that cropping and cultivation are very destructive of the organic. matter and the nitrogen of the surface soil.


Extinct Pleistocene Mammals Of Minnesota, N. H. Winchell Jan 1910

Extinct Pleistocene Mammals Of Minnesota, N. H. Winchell

Journal of the Minnesota Academy of Science

No abstract provided.


Hennepin At The Falls Of St. Anthony, N. H. Winchell Jan 1910

Hennepin At The Falls Of St. Anthony, N. H. Winchell

Journal of the Minnesota Academy of Science

No abstract provided.


Englacial And Superglacial Drift In Minnesota, The Dakotas, And Manitoba, Warren Upham Jan 1910

Englacial And Superglacial Drift In Minnesota, The Dakotas, And Manitoba, Warren Upham

Journal of the Minnesota Academy of Science

No abstract provided.


Geographical Influences In The Development Of Nebraska, George E. Condra Jan 1910

Geographical Influences In The Development Of Nebraska, George E. Condra

George E. Condra Publications

Nebraska is centrally located in the mainland of the United States, being a part of the long slope of the High Plains Regions.


Some Ore Deposits In Maine And The Milan Mine, New Hampshire, William H. Emmons Jan 1910

Some Ore Deposits In Maine And The Milan Mine, New Hampshire, William H. Emmons

Maine Collection

Some Ore Deposits in Maine and The Milan Mine, New Hampshire

by William H. Emmons

Department of the Interior, United States Geological Survey - Bulletin 432

Washington, D.C. (1910).

Contents: Introduction / Geology / Ore Deposits / Descriptions of Mines / Mines of Hancock County / Mines of Washington County / Mines in Somerset and Oxford Counties / Milan Mine, New Hampshire / Index


Ua94/6/2/14 Physiography Notebook, Annie Reis Jan 1910

Ua94/6/2/14 Physiography Notebook, Annie Reis

Student/Alumni Personal Papers

Physiography notebook kept by student Annie Reis in 1910. Notebook includes notes and drawings related to physical geography such as solar systems, rivers, faults, weather and glaciers.


Preliminary Notes On The Carboniferous Flora Of Nebraska, Roy V. Pepperberg Jan 1910

Preliminary Notes On The Carboniferous Flora Of Nebraska, Roy V. Pepperberg

Conservation and Survey Division

About the middle of July, 1907, while engaged by the Nebraska City Commercial Club in examining the geology of Nebraska City and vicinity, the writer was called b the farm of Mr. C. B. James to look at a bed of what was supposed to be fire clay. This proved to be a Carboniferous deposit of stratified micaceous sandstone, interstratified with a fine compact shale, both of which are yellow in color and very fragile when wet.


Coal In Nebraska, Roy V. Pepperberg Jan 1910

Coal In Nebraska, Roy V. Pepperberg

Conservation and Survey Division

Until February, 1906, Nebraska was termed "the state without a mine," and may still be called the state with but a single mine, and yet it would be impossible to tell how much prospecting has been done, or to estimate the number of thousands of dollars that have been spent in this state trying to develop paying mines from the thin beds of coal discovered throughout various parts of the state in the Carboniferous and Cretaceous formations.


Coal In Nebraska, Roy V. Pepperberg Jan 1910

Coal In Nebraska, Roy V. Pepperberg

Conservation and Survey Division

Until February, 1906, Nebraska was termed "the state without a mine," and may still be called the state with but a single mine, and yet it would be impossible to tell how much prospecting has been done, or to estimate the number of thousands of dollars that have been spent in this state trying to develop paying mines from the thin beds of coal discovered throughout various parts of the state in the Carboniferous and Cretadeous formations.


The Development Of Our Natural Resources, E. H. Barbour Jan 1910

The Development Of Our Natural Resources, E. H. Barbour

Conservation and Survey Division

No abstract provided.


Bulletin No. 106 - A Study Of The Production And Movement Of Nitric Nitrogen In An Irrigated Soil, Robert Stewart, J. E. Greaves Dec 1909

Bulletin No. 106 - A Study Of The Production And Movement Of Nitric Nitrogen In An Irrigated Soil, Robert Stewart, J. E. Greaves

UAES Bulletins

The problem of maintaining the nitrogen content in our agricultural soils is one of vital importance to the development of a permanent system of agriculture. Any investigation, therefore, which tends to throw any light on the conditions which are necessary for maintaining the maximum supply of nitrogen in our soils needs no apology for its institution.


Report On A Portion Of The Soda Springs Mining District In Bernalillo County, New Mexico, Edmund Ross May 1909

Report On A Portion Of The Soda Springs Mining District In Bernalillo County, New Mexico, Edmund Ross

Earth and Planetary Sciences ETDs

No abstract provided.


Paleogeographic Maps Of North America, Bailey Willis Jan 1909

Paleogeographic Maps Of North America, Bailey Willis

United States Geological Survey: Staff Publications

In passing from the Jurassic to the Lower Cretaceous North America underwent but little change along the Atlantic border and throughout the east. It remained a low land and the coastal plain was somewhat more deeply submerged. But on the Pacific coast, on the contrary, there was pronounced movement, particularly in the Coast Range of California. A bold peninsula developed from Oregon south to Santa Barbara and, being eroded, yielded the thick sediments of the Shasta group, which were deposited in marine water east of it, in part.

In Alaska the Shastan sea appears to have invaded the Jurassic land …


Bulletin No. 104 - The Storage Of Winter Precipitation In Soils, John A. Widtsoe Oct 1908

Bulletin No. 104 - The Storage Of Winter Precipitation In Soils, John A. Widtsoe

UAES Bulletins

It has been found that the production of one pound of dry plant substance on soils of average fertility, requires in humid districts not more than five hundred pounds of water, and in arid districts like Utah about seven hundred and fifty pounds. This indicates that the average rainfall of Utah, which is about twelve inches, if properly conserved in the soil, is sufficient to produce annually, without irrigation, from thirty to forty-five bushels of wheat to the acre, or corresponding yields of other crops. The realization of this truth has changed greatly our views of irrigation practices. The beginning …


The Sand And Gravel Resources And Industries Of Nebraska, George Evart Condra Jan 1908

The Sand And Gravel Resources And Industries Of Nebraska, George Evart Condra

George E. Condra Publications

Sand and gravel are Nebraska's most important mineral resources. The extensive use which is made of these materials in the building and trade industries not only in our own but in adjoining states, is a factor of economic importance in the industrial development of Nebraska.


The Skull Of Moropus, Erwin Hinckley Barbour Jan 1908

The Skull Of Moropus, Erwin Hinckley Barbour

Conservation and Survey Division

During the summer of 1905 the Morrill Geological Expedition of the University of Nebraska had the good fortune to discover early in July the skull of Moropus. Associated with it were mandible, atlas and other cervicals, and various skeletal parts.


The Control, Development And Utilization Of The Missouri River And Its Tributaries, G. E. Condra, H. W. Caldwell, O. V.P. Stout, F. J. Phillips, N. A. Bengtson, George L. Sheldon Jan 1908

The Control, Development And Utilization Of The Missouri River And Its Tributaries, G. E. Condra, H. W. Caldwell, O. V.P. Stout, F. J. Phillips, N. A. Bengtson, George L. Sheldon

Conservation and Survey Division

The speakers at this conference were Professors Condra, Caldwell, Stout, Phillips, Bengtson, and Gov. George L. Sheldon, with Dean Charles E. Bessey presiding. The principal object of the meeting was to make known reliable information in regard to the Missouri river, concerning which there is widespread interest and in some instances a tendency to magnify the future possibilities of the river. This paper is an account of the conference. It gives some of the thoughts that were emphasized at the symposium, reciting the facts as they were given by those who have investigated the respective phases of the theme.

GEOGRAPHIC …


Skeletal Parts Of Moropus, Erwin Hinckley Barbour Jan 1908

Skeletal Parts Of Moropus, Erwin Hinckley Barbour

Conservation and Survey Division

In the foregoing publication, it was announced that the skull of Moropus had been discovered. Heretofore the genus had been known chiefly by scattered teeth and fragments, mostly toe bones, but now that the collections of Hon. Charles H. Morrill, Nebraska State Museum, have the skeletal parts necessary for the restoration of this remarkable animal, it seems advisable to supplement the brief illustrated report concerning the skull of Moropus with a similar paper concerning its skeletal parts.


Tests Of The Strength Of Concrete Jan 1908

Tests Of The Strength Of Concrete

Conservation and Survey Division

Since the use of concrete is becoming so general it seems quite appropriate that the tests of concrete in which any Nebraska material forms a constituent part should be recorded where they may be obtained by those interested.. The following tests were made in the Testing Laboratory of the University of Nebraska, and though very limited in number may be expressive of the qualities of concrete mixed from these materials.


Evidence Of Man In The Loess Of Nebraska, Erwin Hinckley Barbour Jan 1907

Evidence Of Man In The Loess Of Nebraska, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

AFTER careful investigation the writer stands ready to announce his belief in the occurrence of human remains in the loess of this state, and for this primitive type he has proposed the name Nebraska loess man. Such importance attaches to the discovery as to warrant a paper devoted to the geological facts connected therewith.


On The Origin And Definition Of The Geologic Term "Laramie", A. C. Veatch Jan 1907

On The Origin And Definition Of The Geologic Term "Laramie", A. C. Veatch

United States Geological Survey: Staff Publications

INTRODUCTION

Investigations of the United States Geological Survey during the summer of I906, covering the larger part of the Laramie exposures on the Laramie Plains, examined by the King and Hayden surveys, have revealed many new and important facts bearing on the Laramie problem.

By detailed areal surveys it was found: (1) that the lignitiferous series, which in the Laramie Plains lies between the Montana below and the Fort Union above, and has a maximum thickness of about 12,500 feet, is divided about the middle by an unconformity; (2) that this unconformity is in the same stratigraphic plane and continuous …


Report Of The Geological Expedition Of Hon. Charles H. Morrill. Season Of 1906, Erwin Hinckley Barbour Jan 1907

Report Of The Geological Expedition Of Hon. Charles H. Morrill. Season Of 1906, Erwin Hinckley Barbour

Department of Earth and Atmospheric Sciences: Faculty Publications

THE MORRILL geological expedition of the University of Nebraska for the season of 1906 continued the work of the previous season by developing the bone quarry on University Hill, at Agate, Sioux County, Nebraska. This quarry is situated on the eastern extremity of Mr. James Cook's ranch, which is an extensive one, and probably the best known in the state. In addition to the uplands it contains some ten square miles along the valley of the Niobrara. The high bluffs adjacent to and beyond this model ranch are fossiliferous, while at Carnegie Hill and University Hill there are literal bone …


Biennial Report Work Of The State Geological Survey In Brief, Erwin Hinckley Barbour Jan 1907

Biennial Report Work Of The State Geological Survey In Brief, Erwin Hinckley Barbour

Conservation and Survey Division

The Nebraska Geological Survey as now constituted has been in operation since 1891, but it has enjoyed state aid during the past four years only. Considering the size of the commonwealth and the limited appropriations for geological work, unusual progress has been made.


Biennial Report, Erwin H. Barbour Jan 1907

Biennial Report, Erwin H. Barbour

Conservation and Survey Division

The Nebraska Geological Survey as now constituted has been in operation since 1891, but it has enjoyed state aid during the past four years only. Considering the size of the commonwealth and the limited appropriations for geological work, unusual progress has been made. Since no report covering the work of the first biennium was prepared it will be included incidentally in this paper. Briefly stated the Nebraska Geological Survey during the past biennium has devoted especial attention to the industrial resources of the state, prepared ten o! twelve reports in manuscript form, published eight reports completing volumes I and II, …


Opening Of The Indian Territory, G. E. Condra Jan 1907

Opening Of The Indian Territory, G. E. Condra

Conservation and Survey Division

The opening of Indian country has continued from Colonial days to the present. Usually it has resulted from force and treaty, the strong dispossessing the weak. As a result, the Red man has, in general, moved frontierward, ahead of industrial waves, remaining for a longer time only on reservations set aside for tribes. The Indian's struggle even on these reserves has been a losing one, resulting largely from war, disease, and the cupidity of whites. History shows that Indian life and Indian institutions have not prevailed against the white man's civilization and commerce. GATHERING THE TRIBES. The Indian Territory and …