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Articles 11911 - 11940 of 11973
Full-Text Articles in Physical Sciences and Mathematics
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.
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, "Medusina Walcotti", E. H. Barbour
Notice Of Jelly Fishes In The Carboniferous Of Nebraska, "Medusina Walcotti", E. H. Barbour
Conservation and Survey Division
No abstract provided.
A New Longisrostral Mastodon From Cherry County, Nebraska, E. H. Barbour
A New Longisrostral Mastodon From Cherry County, Nebraska, E. 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. N evertheless some interesting and valuable material was obtained by the N ebraska Geological Survey, notably the great mandible of a new longirostral mastodon from Cherry County, together with associated tusk and bones.
The mastodon constituting the basis of this paper was found in the exposnres bordering the Snake River in section 33, range 30 west, and township 32 north. The talus slope was strewn with fragments of the tusk and bone of a mastodon. This led the …
Plant Tissue In The Carboniferous Shales Of Nebraska, E. H. Barbour
Plant Tissue In The Carboniferous Shales Of Nebraska, E. H. Barbour
Conservation and Survey Division
No abstract provided.
Two New Fossil Dogs Of The Genus "Crynarctus" From Nebraska, E. H. Barbour
Two New Fossil Dogs Of The Genus "Crynarctus" From Nebraska, E. H. Barbour
Conservation and Survey Division
No abstract provided.
Studies On The Relation Of The Nonavailable Water Of The Soil To The Hygroscopic Coefficient, F. J. Always
Studies On The Relation Of The Nonavailable Water Of The Soil To The Hygroscopic Coefficient, F. J. Always
Nebraska Agricultural Experiment Station: Historical Research Bulletins
These experiments were carried out in connection with and subordinate to various soil investigations, the object being to determine the relation of the final water content of the soil to the hygroscopic coefficient and to determine to what extent the moisture was removed from the different portions of the subsoil not penetrated by plant roots.
Bulletin No. 122 - The Nature Of The Dry Farm Soils Of Utah, John A. Widtsoe, Robert Stewart
Bulletin No. 122 - The Nature Of The Dry Farm Soils Of Utah, John A. Widtsoe, Robert Stewart
UAES Bulletins
Successful farming in Utah is dependent upon two main factors: First, the economic use of irrigation water upon the lands lying under the irrigation ditch, and second, upon the correct practice of the principles of dry farming upon those lands not susceptible to irrigation. Dry farming in Utah is, therefore, of great importance and it becomes essential to learn something of the nature of the dry farming soils of the State.
Bulletin No. 121 - The Soil Of The Southern Utah Experiment Station, John A. Widtsoe, Robert Stewart
Bulletin No. 121 - The Soil Of The Southern Utah Experiment Station, John A. Widtsoe, Robert Stewart
UAES Bulletins
The soil of the Southern Utah Experiment Farm is a very interesting type: it is highly charged with gypsum and thereby presents a condition unique in reported studies of the soils of America. Gypsiferous soils are characteristic of a large portion of Southern Utah; many of them are derived from shale, others from sandstone, impregnated with gypsum.
A Minor Phenomenon Of The Glacial Drift In Nebraska, Erwin H. Barbour
A Minor Phenomenon Of The Glacial Drift In Nebraska, Erwin H. Barbour
Conservation and Survey Division
No abstract provided.
Cement Manufacture In Nebraska, Erwin Hinckley Barbour
Cement Manufacture In Nebraska, Erwin Hinckley Barbour
Conservation and Survey Division
It is the purpose of this paper to briefly review the history of cement manufacture in the State, to call attention to certain promising exposures of cement rock, and to report upon the first modern cement mill in Nebraska. Not that this State has been slow in recognizing cement as one of the most important modern constructional materials; or slow to recognize the need of developing its natural resources; but due rather to a combination of circumstances. For at least twenty years, many Nebraskans have had in mind the importance of establishing cement plants in this State. Furthermore encouraging inducements …
Bulletin No. 115 - The Movement Of Water In Irrigated Soils, J. A. Widtsoe, W. W. Mclaughlin
Bulletin No. 115 - The Movement Of Water In Irrigated Soils, J. A. Widtsoe, W. W. Mclaughlin
UAES Bulletins
This bulletin embodies a part of the data secured in the irrigation investigations of this Station. It aims to contribute something to our knowledge of the movement of water in irrigated soils . The science of irrigation can not well be built until the laws involved in the mutual relationships of waters, soils and crops are understood with fair accuracy. Much has been done by numerous investigators, during the last fifty years, to give a clearer comprehension of the movement of soil moisture; but the field experiments have dealt largely with saturated soils, and the laboratory experiments have seldom taken …
Suggestions To Correspondents, E. H. Barbour
Suggestions To Correspondents, E. H. Barbour
Conservation and Survey Division
No abstract provided.
A New Genus And Species Of Rhinoceros, Epiaphelops Virgasectus From The Lower Miocene Of Nebraska, H. J. Cook
A New Genus And Species Of Rhinoceros, Epiaphelops Virgasectus From The Lower Miocene Of Nebraska, H. J. Cook
Conservation and Survey Division
No abstract provided.
A New Species Of Rhinoceros, "Diceratherium Loomisi," From The Lower Miocene Of Nebraska, H. J. Cook
A New Species Of Rhinoceros, "Diceratherium Loomisi," From The Lower Miocene Of Nebraska, H. J. Cook
Conservation and Survey Division
No abstract provided.
Faunal Lists Of The Tertiary Formations Of Sioux County, Nebraska, H. J. Cook
Faunal Lists Of The Tertiary Formations Of Sioux County, Nebraska, H. J. Cook
Conservation and Survey Division
No abstract provided.
A New Genus And Species Of Rhinoceros, Epiaphelops Virgasectus From The Lower Miocene Of Nebraska, Erwin Hinckley Barbour
A New Genus And Species Of Rhinoceros, Epiaphelops Virgasectus From The Lower Miocene Of Nebraska, Erwin Hinckley Barbour
Conservation and Survey Division
No abstract provided.
Suggestions To Correspondents, Erwin Hinckley Barbour
Suggestions To Correspondents, Erwin Hinckley Barbour
Conservation and Survey Division
No abstract provided.
An Account Of The Nebraska Geological Survey, Erwin Hinckley Barbour
An Account Of The Nebraska Geological Survey, Erwin Hinckley Barbour
Conservation and Survey Division
No abstract provided.
An Important Undeveloped Clay Bed, Erwin Hinckley Barbour
An Important Undeveloped Clay Bed, Erwin Hinckley Barbour
Conservation and Survey Division
No abstract provided.