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Articles 158911 - 158940 of 159256
Full-Text Articles in Entire DC Network
Circular No. 62 - Summary Of Publications
Circular No. 62 - Summary Of Publications
UAES Circulars
Circular No. 62 contains a summary of publications of the Utah Agricultural Experiment Station issued since September 1925. The publications of this Station are no longer sent to a general mailing list (except in the case of libraries), but are sent. only on request. Therefore, copies of any of the publications listed will be sent without charge to those requesting them as long as the supply is available. However, in the case of abstracts of scientific and technical papers the supply is very limited and the requests for these should therefore be limited as far as possible only to those …
Grazing Periods And Forage Production On The National Forests, Arthur W. Sampson, Harry E. Malmsten
Grazing Periods And Forage Production On The National Forests, Arthur W. Sampson, Harry E. Malmsten
Aspen Bibliography
Stockmen in the West have always had confidence in the adequacy of the native forage crop to provide pasturage for their livestock. Indeed, under normal climatic conditions this enormous natural resource has not failed the grazier, except where it has been called upon to meet unreasonable demands. The productivity of the range has declined sharply, however, wherever the requirements of plant growth have been disregarded for many years in succession. Where there has been too early or too frequent and to heavy grazing, undue trampling, or some other unsatisfactory feature of range use, the results have been uniformly bad. Many …
The Natural Vegetation Of Ohio. Iii. Plant Succession, Paul B. Sears
The Natural Vegetation Of Ohio. Iii. Plant Succession, Paul B. Sears
Papers in Ecology
In the preceding papers of this series (1) it has been shown that within the glaciated area the physiographic results of glaciation offer the best general key to the pattern of natural vegetation. The results of glaciation, in turn, have been largely influenced by preglacial conditions.
In analyzing the composition of the natural vegetation of Ohio certain groups of associations were distinguished, to wit, Prairie, Ash, Oak, and Beech. Each group includes several related classical associations as described by Cowles (2) and others.
The Natural Vegetation Of Ohio Ii. The Prairies, Paul B. Sears
The Natural Vegetation Of Ohio Ii. The Prairies, Paul B. Sears
Papers in Ecology
It is well known that many treeless areas existed in Ohio before white settlement. These areas, of various ecological character and usually restricted in size, were in a few cases fairly extensive—embracing from fifty to one hundred square miles. The term "prairie" was rather generally applied to them, although more exact terms were not wanting. Like the various forest associations, these treeless areas have played an important role in influencing industrial and cultural phases of human life in Ohio (1). The present paper is an attempt to reconstruct such areas, now destroyed or obscured by secondary successions induced by white …
Fortieth Annual Meeting Of The Iowa Academy Of Science, April 30 And May 1, 1926, Iowa Academy Of Science
Fortieth Annual Meeting Of The Iowa Academy Of Science, April 30 And May 1, 1926, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
Soil Temperature As Influenced By Forest Cover, Tsi-Tung Li
Soil Temperature As Influenced By Forest Cover, Tsi-Tung Li
Yale School of the Environment Bulletin Series
The purpose of this investigation is to study the effect of the forest on soil temperature at definite depths, expressed in terms of daily maximum and daily minimum. By forest is meant not only the trees but the surface vegetation and litter as well. Effort was made to preserve the vegetation and litter from being disturbed over the period covered by the investigation.
Directory Of Certain Alumni The Department Of Geology And Geography The University Of Nebraska, E. F. Schramm
Directory Of Certain Alumni The Department Of Geology And Geography The University Of Nebraska, E. F. Schramm
Bulletin of the University of Nebraska State Museum (1924–2023)
In the Department of Geology and Geography, The University of Nebraska, there have been over 10,000 registrants between the years 1891 and 1926. So many inquiries have been received concerning alumni and their addresses that it seems advisable to publish this directory. The list is necessarily incomplete since many of the alumni have not informed the Department respecting their addresses and change of positions. Out of the total number of those who have pursued professional vocations the following have kept in close touch with the Department.
Archidiskodon Maibeni, Erwin H. Barbour
Archidiskodon Maibeni, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
Archidiskodon maibeni was first described in Bulletin 10 of the Nebraska State Museum under the title" Skeletal Parts of the Columbian Mammoth, Elephas Maibeni." * Dr. Henry Fairfield Osborn finds it expedient to found a new genus, Archidiskodon, to include the earlier and more primitive mammoths. Hence the change in the generic name. t'Mammoths and modern elephants have long been grouped together under 'the genus Elephas. Subdividing the genus does not necessarily do away with this convenient and rather familiar old arrangement.
Factors Determining Natural Reproduction Of Longleaf Pine On Cut-Over Lands In Lasalle Parish, Louisiana, Herman H. Chapman
Factors Determining Natural Reproduction Of Longleaf Pine On Cut-Over Lands In Lasalle Parish, Louisiana, Herman H. Chapman
Yale School of the Environment Bulletin Series
The original ' pine forests, of the southern states covered from 125 to 130 million acres of land, about two-thirds of which was Longleaf pine. Four-fifths of this area had been cut over by 1920, leaving about 230 million acres, one-half of which is Longleaf pine. Of the cut-over lands, 31 million acres have not restocked. The Longleaf pine has thus been the principal tree crop on about 85 million acres of land, of which 11% million acres remained' in 1920, giving a cut-over area of nearly 73 million acres, or 114,062 square miles. This area is nearly half the …
The Tapeworms Of The Rhinoceroses, A Study Based On Material From The Belgian Congo, Horace W. Stunkard
The Tapeworms Of The Rhinoceroses, A Study Based On Material From The Belgian Congo, Horace W. Stunkard
Harold W. Manter Laboratory of Parasitology: Library Materials
During the course of my study on the parasitic worms collected by the Lang-Chapin expedition of the American Museum to the Belgian Congo, I have had the good fortune to examine abundant material of Plagiotaenia gigantea (Peters). This interesting species, the first reported from the rhinoceros, has been confused with other cestodes from rhinoceros hosts, has been assigned to no less than three different genera in addition to the genus Taenia, to which it was originally referred, and has been the source of much discussion and difference of opinion during the past seventy years. A review of the literature …
An Ecological Study Of Timpanogos Creek From Aspen Grove To Wildwood, Marion L. Harris
An Ecological Study Of Timpanogos Creek From Aspen Grove To Wildwood, Marion L. Harris
Theses and Dissertations
Ecology may be oonsidered as one of the vital parts of botany, since there are two ultimate facts in this science; namely, the plant and its habitat . The habitat is made up of the physical factors that control function. At Timpanogos there are so many different habitats, that the chief problem is not that of finding a problem to study, but rather that of selecting one from the many. The purpose of this paper is to point out some of the interesting features that are found in a study of Timpanogos Creek from Aspen Grove to Wildwood.
Some Marine Fish Trematodes Of Maine, Harold W. Manter
Some Marine Fish Trematodes Of Maine, Harold W. Manter
Harold W. Manter Laboratory of Parasitology: Library Materials
During the summer of 1924 a study of marine fish parasites was made at the Mount Desert Island (Maine, USA) Biological Laboratory. The present paper represents a preliminary report on the trematode group. Three new species of trematodes are described. Only brief consideration is here given to species already known. A later paper will deal more completely with these and related forms.
Includes brief descriptions of Podocotyle atomon (Rud. 1802), Podocotyle olssoni Odhner 1905, Stephanochasmus baccatus Nicoll 1907, Lepidapedon rachion (Cobb.) 1858, Lepidapedon elongatum (Lebour 1908), Homalometron pallidum Staff. 1904, Steganoderma formosum Staff. 1904, Otodistomum cestoides (van Ben. 1870), Hemiurus …
Bulletin No. 194 - The Influence Of Storage On The Composition Of Flour, J. E. Greaves, C. T. Hirst
Bulletin No. 194 - The Influence Of Storage On The Composition Of Flour, J. E. Greaves, C. T. Hirst
UAES Bulletins
There is quite a general belief among millers, bakers, and the laity that flour improves on ageing. However, there is no definite information as to the time requisite for this improvement nor whether it reaches a maximum and then deteriorates. The information is no more exact as to the changes which occur during the ageing process or the conditions which govern them. We have found no reference in the literature where bad effects have resulted from storage, provided a highly-milled, sound flour is stored in dry, well-ventilated rooms free from odors (20). The results which have been reported point to …
A Study Of Onion Varieties, A. L. Wilson
A Study Of Onion Varieties, A. L. Wilson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The object of this thesis is to present the results of four year's studies of onion varieties conducted by the author at the Davis County Farm together with a partial review of the literature of the subject, setting forth the history, the botany, the commercial importance and some of the varietal studies in other states and Canada.
The Natural Vegetation Of Ohio, Paul B. Sears
The Natural Vegetation Of Ohio, Paul B. Sears
Papers in Ecology
This map has been prepared by transcribing the species of bearing trees recorded by the original surveyors who traversed the Territory and State of Ohio before the destruction of the virgin forest by the hands of white men.
Surveying of Ohio was begun in July, 1786, (1) under The Geographer of the United States, Thomas Hutchins, employing for the first time his device of sections one mile square. This empirical device was hailed as a great American invention, although the State of Ohio has since been found to possess a curved surface in common with the rest of the earth. …
An American Fossil Giraffe, W. D. Matthew, E. H. Barbour
An American Fossil Giraffe, W. D. Matthew, E. H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
A fragment of the lower jaw of a large fossil mammal with two well-worn teeth was dug up in June 1918, at a depth of 20 feet, while digging a cess pool at Bradshaw, York County, Nebraska. This unique specimen, accessioned 7-7-18, was brought to the Nebraska State Museum by A. Archie Dorsey, and was donated by C. B. Palmet, both of Bradshaw. It undoubtedly occurred in loess, which is thickly as well. as extensively developed in this region. It is a ruminant jaw, the teeth preserved being P4 and m1. The characteristic pattern of the premolar excludes reference to …
Prosthennops Xiphodonticus, Sp. Nov.: A New Fossil Peccary From Nebraska, Erwin H. Barbour
Prosthennops Xiphodonticus, Sp. Nov.: A New Fossil Peccary From Nebraska, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
During the field season of 1915, while collecting, a mile or two west of Valentine, Cherry County, Nebraska, Messrs. A. C. Whitford and J. B. Burnett secured for the Morrill-Maiben Palaeontological Collections, The Nebraska State Museum, The University of Nebraska, a finely preserved jaw of a small fossil hog, or peccary, belonging to the genus Frosthennops, accessioned No. 85-11-8-15B. & W.
The mandible under consideration was preserved in fine sand and is without blemish save that the condyle and coronoid are wanting. The dentition is perfect. In allusion to the sword-like tusks, which are unduly large, the species name xiphodonticus …
Gramineae, Vicinity Of Richmond, Virginia, Mary Smith Lynn
Gramineae, Vicinity Of Richmond, Virginia, Mary Smith Lynn
Master's Theses
List of grasses documented in the vicinity of RIchmond, Virginia.
Boxwoods, Samuel J. Record, George A. Garratt
Boxwoods, Samuel J. Record, George A. Garratt
Yale School of the Environment Bulletin Series
True boxwood, commonly called Turkish boxwood, is derived from a small group of plants, of which the common evergreen ·box of our gardens is the type. To this group the famous botanist Linnaeus gave the generic name of Buxis, the Latin for box tree. He called the best known member of it Buxis sempervirens, which is' but another form of Ovid's "buxus perpetuo virens," the evergreen box. For long this was considered the only species, though various forms and varieties came to be recognized, several of which have since been elevated by other botanists to specific rank.
Bulletin No. 192 - Biennial Report Of The Director: For The Years 1923 And 1924
Bulletin No. 192 - Biennial Report Of The Director: For The Years 1923 And 1924
UAES Bulletins
No report (either annual or biennial) of the work of the Utah Agricultural Experiment Station has been published separately since 1906. There has been so much inquiry regarding the present status of research projects that a brief report at this time is considered opportune. The report is an attempt to give the reader a brief but concise and comprehensive survey of the research work now under way at the Utah Agricultural Experiment Station as well as a brief description of the work being attempted on each of the experimental farms.
Chapter Five: Agriculture Comes Into Its Own, Robert Crawford
Chapter Five: Agriculture Comes Into Its Own, Robert Crawford
These Fifty Years: A History of the College of Agriculture of the University of Nebraska
IT MAY be said that it took eighteen years to lay the foundation of agricultural instruction and research in Nebraska, and another eighteen years to build on this foundation. The eighteen years beginning about 1890 marked a period of great development for the Industrial College as well as the University itself. A School of Agriculture was early established and in a comparatively few years began to number its students in the hundreds. What the agricultural department of the Industrial College had heretofore lacked in numbers, this secondary school supplied. For the first time, the college farm began to be regarded …
Sand Fulgurites From Nebraska Their Structure And Formative Factors, Abram E. Anderson
Sand Fulgurites From Nebraska Their Structure And Formative Factors, Abram E. Anderson
Bulletin of the University of Nebraska State Museum (1924–2023)
So much has been written during the past century on the origin, structure and occurrence of fulgurites, or lightning tubes, found in many parts of the world that it would seem as though little remains to be added to the literature on the subject; but the discovery of a considerable number of unusually large and complete specimens in Holt and Stanton Counties, Nebraska, which exhibit remarkable definition of the particular features that have occasioned so much controversy regarding their formative processes, has added an important type to the representatives of this phenomenon and afforded clearer interpretation of the origin of …
Skeletal Parts Of The Columbian Mammoth Elephas Maibeni, Sp. Nov., Erwin Hinckley Barbour
Skeletal Parts Of The Columbian Mammoth Elephas Maibeni, Sp. Nov., Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The skeletal parts of Elephas columbi are said to be unknown, although teeth, jaws, and skulls are common enough. Columbi is a mammoth of southern adaptation, hence its parts are found from Nebraska southward. Elephas columbi occurs abundantly throughout the State and many examples are preserved in the Nebraska State Museum, as will be seen in an accompanying list.
Tetrabelodon Abell, Sp. Nov., Erwin Hinckley Barbour
Tetrabelodon Abell, Sp. Nov., Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
Brown County, Nebraska, which has been so prolific of long-jawed mastodons, has yielded another form which seems to be new and which may throw light on certain small tusks that occur where Tetrabelodon bones abound. Heretofore, we have considered these to be embryonic, but they show apparent wear, and in other respects they are enigmatic, and at best, atypical. Tetrabelodon tusks proper, however young, are typical, and are obviously tusks in miniature. The tusks in doubt are of varying lengths and about the diameter of one's thumb, but taper backwards, are worn to a bluntly oblique point, and are slightly …
Hackberry Conglomerate A New Nebraska Rock, Erwin Hinckey Barbour
Hackberry Conglomerate A New Nebraska Rock, Erwin Hinckey Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
In the cabinets of the Nebraska State Museum are several excellent rock specimens, which at first sight pass for pisolite, which they simulate. Scrutiny shows that they are hackberry seeds in sand, cemented by lime and clay into a firm, compact rock. The term hackberry conglomerate seems apropos.
Notes On Nebraska Fulgurites, Erwin Hinckley Barbour
Notes On Nebraska Fulgurites, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
Some six or eight years ago the writer contemplated a study of Nebraska fulgurites, both in the field and in the laboratory. In the meantime however, it proves to be superfluous for, after supplying Mr. A. E. Anderson, of the American Museum of Natural History, with certain material and data he proceeded in a masterful way on a technical inquiry, and it is with pleasure that, although delayed in publication, his findings follow in Bulletin 7 of the Nebraska State Museum. The present paper will deal as briefly as possible with the mode of occurrence and gross structure.
Sand Fulgurites From Nebraska Their Structure And Formative Factors, Abram E. Anderson
Sand Fulgurites From Nebraska Their Structure And Formative Factors, Abram E. Anderson
Bulletin of the University of Nebraska State Museum (1924–2023)
So much has been written during the past century on the origin, structure and occurrence of fulgurites, or lightning tubes, found in many parts of the world that it would seem as though little remains to be added to the literature on the subject; but the discovery of a considerable number of unusually large and complete specimens in Holt and Stanton Counties, Nebraska, which exhibit remarkable definition of the particular features that have occasioned so much controversy regarding their formative processes, has added an important type to the representatives of this phenomenon and afforded clearer interpretation of the origin of …
Manganese Fulgurites, Harold J. Cook
Manganese Fulgurites, Harold J. Cook
Bulletin of the University of Nebraska State Museum (1924–2023)
During August, 1924, while doing reconnaisance work near the head of Chugwater Creek, Wyoming, on the ranch of Mr. J. L. Jordon, the writer's attention was called to some unusual and interesting specimens found in a limited area, perhaps an acre or so, on the slope of the small butte flanking the Chugwater Valley. The hills of the region are of Tertiary age, the particular spot under consideration being Oligocene, the Brule stage, or Oreodon beds.
An American Fossil Giraffe Giraffa Nebrascensis, Sp. Nov., W. D. Matthew, E. H. Barbour
An American Fossil Giraffe Giraffa Nebrascensis, Sp. Nov., W. D. Matthew, E. H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
A fragment of the lower jaw of a large fossil mammal with two well-worn teeth was dug up in June 1918, at a depth of 20 feet, while digging a cess pool at Bradshaw, York County, Nebraska.
Elephas Scotti A New Primitive Mammoth From Nebraska, Erwin Hinckley Barbour
Elephas Scotti A New Primitive Mammoth From Nebraska, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
On February 18,1922, the mandible of an unusually primitive mammoth was secured for the palaeontological collections of Mr. Hector Maiben by Mr. E. T. Engle. The specimen was found in Aftonian gravel on the farm of Mr. E. J. Hartman, five miles south of Staplehurst, Seward County, Nebraska. It is numbered 18-2-22 in the accession book of the Nebraska State' Museum.