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Articles 24121 - 24150 of 24230
Full-Text Articles in Physical Sciences and Mathematics
A New Sabertoothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook
A New Sabertoothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook
Conservation and Survey Division
No abstract provided.
Nebraska Fossils Which Excite Common Inquiry, Erwin H. Barbour
Nebraska Fossils Which Excite Common Inquiry, Erwin H. Barbour
Conservation and Survey Division
This paper must not be mistaken for a report on the fossils of Nebraska. It is merely a circular letter to correspondents describing and figuring those fossils only which occasion frequent comment. In two recent papers of the Survey consideration was given to the common minerals and rocks of Nebraska, and it seems opportune to briefly discuss our fossils in a like manner. Probably no other State can boast of such a well-preserved and varied fauna.
Nebraska Minerals Which Excite Common Inquiry, Erwin H. Barbour
Nebraska Minerals Which Excite Common Inquiry, Erwin H. Barbour
Conservation and Survey Division
The Minerals, Rocks, and Fossils of Nebraska, which Excite Common Inquiry, are treated brefly in leaflets numbered 37, 37a, 37b, respectively. These are intended to serve as circular letters to correspondents. Possibly they may prove to be acceptable and helpful in a measure to teachers and others who conduct parties of school children on field excursions.
Nebraska Rocks Which Excite Common Inquiry, Erwin H. Barbour
Nebraska Rocks Which Excite Common Inquiry, Erwin H. Barbour
Conservation and Survey Division
This leaflet it intended to serve as an answer to correspondents who make inquiry about the rocks of Nebraska1. Unfortunately for those interested in such matters, the rocks of the State are few in number, and are deeply buried from view by sand and soil, so there are thousands of square miles in which even a pebble is a rarity. That our rocks are level and undisturbed is practically true. Still there are some surprisingly interesting folds and faults.
Nebraska Green Quartzite An Import Ant Future Industry, Erwin H. Barbour
Nebraska Green Quartzite An Import Ant Future Industry, Erwin H. Barbour
Conservation and Survey Division
ln southern Harlan and Franklin counties, there occur many acres of green quartzite which must be of commercial consequence when made available. It is a neglected resource upon which important industries are sure to be based. With the development of this bed in view, the Nebraska Geological Survey has examined this area. and through this leaflet wishes to place the results before possible investors.
A New Saber-Toothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook
A New Saber-Toothed Cat From Nebraska, Erwin H. Barbour, Harold J. Cook
Conservation and Survey Division
During the field season of 1913, while exploring the Pliocene beds of Brown County, Mr. A. C. Whitford, a Fellow in the Department of Geology, University of Nebraska, discovered the mandible of a new machaerodont cat. His work in this region was in the interest of the Nebraska Geological Survey and the Morrill Geological Expeditions.1
Notes On The Geology Of Sioux County, Nebraska, And Vicinity, H. J. Cook
Notes On The Geology Of Sioux County, Nebraska, And Vicinity, H. J. Cook
Conservation and Survey Division
No abstract provided.
The Pennsylvanian Formations Of Southeastern Nebraska, Geo E. Condra, N. A. Bengtson
The Pennsylvanian Formations Of Southeastern Nebraska, Geo E. Condra, N. A. Bengtson
Conservation and Survey Division
No abstract provided.
Nebraska Green Quartzite - An Important Future Industry, E. H. Barbour
Nebraska Green Quartzite - An Important Future Industry, E. H. Barbour
Conservation and Survey Division
No abstract provided.
The Round Ligament Of Nebraska Proboscideans, E. H. Barbour
The Round Ligament Of Nebraska Proboscideans, E. H. Barbour
Conservation and Survey Division
No abstract provided.
A New Mount Of The Fossil Tortoise, "Testudo Orthopygia", E. H. Barbour
A New Mount Of The Fossil Tortoise, "Testudo Orthopygia", E. H. Barbour
Conservation and Survey Division
No abstract provided.
A New Mammoth, "Elephas Hayi," From Crete, Nebraska, E. H. Barbour
A New Mammoth, "Elephas Hayi," From Crete, Nebraska, E. H. Barbour
Conservation and Survey Division
No abstract provided.
Nebraska Minerals Which Excite Common Inquiry, E. H. Barbour
Nebraska Minerals Which Excite Common Inquiry, E. H. Barbour
Conservation and Survey Division
No abstract provided.
Nebraska Rocks Which Excite Common Inquiry, E. H. Barbour
Nebraska Rocks Which Excite Common Inquiry, E. H. Barbour
Conservation and Survey Division
No abstract provided.
Nebraska Fossils Which Excite Common Inquiry, E. H. Barbour
Nebraska Fossils Which Excite Common Inquiry, E. H. Barbour
Conservation and Survey Division
No abstract provided.
A Phenomenon Of The Kansan Drift In Nebraska, Erwin Hinckley Barbour
A Phenomenon Of The Kansan Drift In Nebraska, Erwin Hinckley Barbour
Department of Earth and Atmospheric Sciences: Faculty Publications
Among the minor phenomena of the glacial drift in Nebraska there is one which, though rarely observed by the public, is of interest and should be commended to the attention of naturalists. The reference here is to certain large, well-defined masses or blocks of such materials as sand, gravel, and coarse pebbles, which occur imbedded in the drift clays along with glacial bowlders, and which presumably have been similarly transported and deposited. These masses or blocks vary widely in color, texture, and kind. They also vary from the glacial matrix in which they are found and are the more striking …
The Storage And Use Of Soil Moisture. Report Of Experimental Substation, North Platte, Nebraska, W. W. Burr
The Storage And Use Of Soil Moisture. Report Of Experimental Substation, North Platte, Nebraska, W. W. Burr
Nebraska Agricultural Experiment Station: Historical Research Bulletins
The profitable cultivation of the non-irrigable lands in west central and western Nebraska is limited by the amount and efficient use of the precipitation. There are tracts of land in the sand hills and minor tracts of badly worn heavier soils where the need of soil fertility is becoming evident. But, in the main, the great problem at present is not one of soil fertility, but of how to get enough water to make use of the fertility now present. The rainfall of this section, which varies from an actual shortage to seldom more than a meager sufficiency, makes it …
Iii. Phase Change By Reflection – Primarily In The Ultra-Violet, Oliver Gish
Iii. Phase Change By Reflection – Primarily In The Ultra-Violet, Oliver Gish
Department of Physics and Astronomy: Faculty Publications
The first quantitative investigation of absolute phase change was made by Quinckel in 1872. This was followed by that of Wernicke, Wiener, Glan, Hennig, Drude, Koenigsberger and Bender. All these investigations were confined to the visible spectrum except that of Koenigsberger and Bender, who, in addition, measured for a few substances the phase change in the infra-red. So far no measurements of this phenomenon have been made in the ultra-violet.
Plant Tissue In The Carboniferous Shales Of Nebraska, Erwin H. Barbour
Plant Tissue In The Carboniferous Shales Of Nebraska, Erwin H. Barbour
Conservation and Survey Division
While exploring the newly discovered Eurypterid beds,1 just one mile south of Peru, Nebraska. November 8, 1912, the writer found unusual amounts of actual plant tissue of Carboniferous age. It seems incredible that it should have been preserved through such a lapse of time. Only the most resistant tissue could have endured. When freshly cleaved, the Eurypterid shales reveal innumerable bits and patches of it, mostly bright red in color.
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, Medusina Walcotti, Erwin H. Barbour
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, Medusina Walcotti, Erwin H. Barbour
Conservation and Survey Division
In visiting the quarries of the State, certain quadripartite objects suggesting the form of jelly fishes have long attracted the writer's attention. They are large and coarse, and were assumed to be imitative concretions. However, the total number observed seems to strengthen the probability that they are of organic origin. In the fall of 1913, while conducting a field class through the Burlington Quarries, located about two miles northwest of South Bend, they were noted again in a new locality, and three specimens were obtained. Two of these were unusual examples, and showed sufficient structure to identify them with the …
Two New Fossil Dogs Of The Genus Cynarctus From Nebraska, Erwin H. Barbour, Harold J. Cook
Two New Fossil Dogs Of The Genus Cynarctus From Nebraska, Erwin H. Barbour, Harold J. Cook
Conservation and Survey Division
The genus Cynarctus was founded by Dr. W. D. Matthew on a nearly complete pair of lower jaws from the Pawnee Creek Beds (Middle Miocene) of Colorado, found in 1901. Since that time no new material pertaining to this genus has been reported. Dr. Matthew referred the genus to the subfamily Amphicyoninae, and to a position intermediate between the primitive bear Ursavus, and the Canidae, with primitive characters retained from its Oligocene ancestors.
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
Conservation and Survey Division
During the season of 1914, field work in the fossil regions was pushed less vigorously than usual owing to lack of funds. Nevertheless some interesting and valuable material was obtained by the Nebraska Geological Survey, notably the great mandible of a new longirostral mastodon from Cherry County, together with associated tusk and bones.
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
A New Longisrostral Mastodon From Cherry County, Nebraska, Erwin H. Barbour
Conservation and Survey Division
During the season of 1914, field work in the fossil regions was pushed less vigorously than usual owing to lack of funds. Nevertheless some interesting and valuable material was obtained by the Nebraska Geological Survey, notably the great mandible of a new longirostral mastodon from Cherry County, together with associated tusk and bones.
A New Canid From The Lower Pliocene Of Nebraska, Tephrocyon Mortifer, H. J. Cook
A New Canid From The Lower Pliocene Of Nebraska, Tephrocyon Mortifer, H. J. Cook
Conservation and Survey Division
No abstract provided.
Thomas County Diatomite, C. J. Elmore
Thomas County Diatomite, C. J. Elmore
Conservation and Survey Division
No abstract provided.
Progress In The Study Of Nebraska Diatoma, C. J. Elmore
Progress In The Study Of Nebraska Diatoma, C. J. Elmore
Conservation and Survey Division
No abstract provided.
Note On The Dentition Of "Amphicyon Amnicola," A Gigantic Fossil Dog, H. J. Cook
Note On The Dentition Of "Amphicyon Amnicola," A Gigantic Fossil Dog, H. J. Cook
Conservation and Survey Division
No abstract provided.
Note On The Occurrence Of The Mammoth In Sioux County, Nebraska, H. J. Cook
Note On The Occurrence Of The Mammoth In Sioux County, Nebraska, H. J. Cook
Conservation and Survey Division
No abstract provided.
Eurypterid Beds Of Nebraska With Notice Of A New Species, "Eurypterus Nebraskaensis", E. H. Barbour
Eurypterid Beds Of Nebraska With Notice Of A New Species, "Eurypterus Nebraskaensis", E. H. Barbour
Conservation and Survey Division
No abstract provided.
A New Fossil Horse, "Hypohippus Matthewi", E. H. Barbour
A New Fossil Horse, "Hypohippus Matthewi", E. H. Barbour
Conservation and Survey Division
No abstract provided.