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Articles 39331 - 39360 of 39421
Full-Text Articles in Physical Sciences and Mathematics
The Scottsbluff Bison Quarry And Its Artifacts, Erwin Hinckley Barbour, C. Bertrand Schultz
The Scottsbluff Bison Quarry And Its Artifacts, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
The association of artifacts with extinct bison bones in a quarry near Grand Island, Hall County Nebraska,1 and from one in Custer County, Nebraska, have already been reported.2 In the meantime, continued search has been rewarded, and a large bed of fossil bison with associated flint implements found. The discovery, if not of actual consequence, at least adds something to the accumulating evidence that Pleistocene man in America may have been a reality.
Association Of Artifacts And Extinct Mammals In Nebraska, Bertrand Schultz
Association Of Artifacts And Extinct Mammals In Nebraska, Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
During the past four years the Nebraska State Museum, under the directorship of Dr. Erwin Hinckley Barbour, has been making even more extensive palaeontological collections throughout Nebraska than heretofore. As work progresses, especially with fossil bison and mammoth, there is increasing evidence that man appeared in Nebraska much earlier than is generally believed. Two occurrences of artifacts associated with fossil bones will constitute the main theme of this paper.
The Mounted Skeleton Of Bison Occidentalis, And Associated Dart-Points, Erwin Hinckley Barbour, C. Bertrand Schultz
The Mounted Skeleton Of Bison Occidentalis, And Associated Dart-Points, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
A composite skeleton of Bison occidentalis was mounted and installed in its case on the lower floor of Morrill Hall, on April 22, 1932. The skeleton in itself is attractive because of its size and excellent preservation, and is rendered additionally interesting by two dart-points, one found under the scapula, and the other under the ribs.
A New Oreodont Slab, Erwin Hinckley Barbour, C. Bertrand Schultz
A New Oreodont Slab, Erwin Hinckley Barbour, C. Bertrand Schultz
Bulletin of the University of Nebraska State Museum (1924–2023)
A slab of pale, reddish-brown sandstone, exhibiting the articulated skeletons of two oreodonts, has been placed on display in the west corridor on the first floor of Morrill Hall. Apparently, a female and well-grown young one lay down together and perished, perhaps from disease, or from chilling winds. They must have been buried quickly, for all of the bones are present, are in perfect condition, and are in articulation, especially in the old one. In the adult the articulation is complete from the ungual phalanges of the two forefeet to the terminal caudal, even though in the figure the skeleton …
The Mandible Of Platybeldon Barnumbrowni, Erwin Hinckley Barbour
The Mandible Of Platybeldon Barnumbrowni, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
Platybelodon barnumbrowni was described originally as Torynobelodon barnumbrowni.1 The Nebraska State Museum was visited and this unique specimen studied by Dr. Henry Fairfield Osborn and Dr. Walter Granger, August seventeenth and eighteenth, nineteen hundred and thirty-two. It is the opinion of both that this specimen belongs properly to their Mongolian genus Platybelodon. With certain reservations the writer wishes to defer instantly to their judgment, which is based on unequalled experience. It is perfectly apparent that this form makes a close approach to the remarkable Platybelodons found by Granger and Andrews in the Gobi Desert of Mongolia, later figured and …
The Skull And Mandible Of Mastodon Moodiei, Erwin Hinckley Barbour
The Skull And Mandible Of Mastodon Moodiei, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The mandible of the Milford mastodon, Mastodon moodiei, was figured and described in Bulletin 24, December, 1931. In the meantime, the fragments of both skull and mandible have been properly cleaned, put together, and mounted for exhibition. No essential parts of the skull or mandible are wanting or are seriously damaged.
The Articulated Skeleton Of Eubelodon Morrilli, Erwin Hinckley Barbour
The Articulated Skeleton Of Eubelodon Morrilli, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The mounted sketleton of Eubelodon morrilli was installed in the west wall case of Elephant Hall December 31, 1931, and has attracted the attention and favorable comments of citizens and other guests. It should be explained that the case in which it is displayed is ten feet deep, sixteen feet high, and extends the length of the hall. Altogether it is a large and impressive mount which reflects credit upon its preparators, and is an important and instructive addition to the Morrill Palaeontological Collections. The pose is spirited and interesting, and the action is all that can be expected of …
Association Of An Arrow Point With Bison Occidentals In Nebraska, F. G. Meserve, Erwin H. Barbour
Association Of An Arrow Point With Bison Occidentals In Nebraska, F. G. Meserve, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
Of late, anthropological literature relative to the association of man and extinct mammals, especially bison and mammoth, has received many contributions from various and widely separated sources. Naturally the question has arisen whether man's advent in America is somewhat earlier than has been generally admitted, or whether certain extinct animals have persisted longer than has been realized. The issue is one of such importance and interest that even minor contributions seem desirable. It is well understood by all that the evidence, when submitted, will be properly weighed, and that conservative judges may rule out much or all of the testimony. …
The Alkaloids, Felix F. Barre
The Alkaloids, Felix F. Barre
Electronic Theses and Dissertations
This thesis, presented for the degree of Bachelor of Science, provides a systematic chemical study of the alkaloids, a class of complex nitrogenous plant substances possessing basic properties. Barre opens by defining the alkaloids and surveying the various systems used to classify them, whether by natural versus artificial origin, chemical nucleus (pyridine, quinoline, or isoquinoline), volatility, or botanical family of origin, and outlines their general physical and chemical properties, including solubility, optical activity, and characteristic reactions with precipitating and color-test reagents.
The thesis details standard laboratory methods for the extraction and separation of alkaloids from plant material, including a step-by-step …
Iowa Academy Of Science, Jacob W. Swisher
Iowa Academy Of Science, Jacob W. Swisher
Iowa Academy of Science Documents
Reprinted from the July 1931 issue of the Iowa Journal of History and Politics published by the State Historical Society of Iowa,
Forty-Fifth Annual Meeting Of The Iowa Academy Of Science, May 1 And 2, 1931, Iowa Academy Of Science
Forty-Fifth Annual Meeting Of The Iowa Academy Of Science, May 1 And 2, 1931, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
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 (1924–2023)
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 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 (1924–2023)
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 …
The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour
The Musk-Oxen Of Nebraska, Erwin Hinckley Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
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 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 (1924–2023)
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 (1924–2023)
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 …
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 (1924–2023)
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 …
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 (1924–2023)
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 …
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 (1924–2023)
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.
Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, May 2 And 3, 1930, Iowa Academy Of Science
Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, May 2 And 3, 1930, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
The Effect Of Soil Moisture On The Establishment Of Spruce Reproduction In British Columbia, Percy Munson Barr
The Effect Of Soil Moisture On The Establishment Of Spruce Reproduction In British Columbia, Percy Munson Barr
Yale School of the Environment Bulletin Series
Most of the field work has been conducted at the Aleza Lake Forest Experiment Station, in the valley of the Upper Fraser River, near the city of Prince George [British Columbia].
I. A series of twelve permanent plots (numbers 1 to 12) was established for the purpose of studying the occurrence of natural reproduction on various types of seed bed, under different densities of overwood and on northern and southern aspects. 2. A second series of four plots (numbers 17 to 20) was laid out in logged-off land for the purpose of studying the survival and growth of advance reproduction …
Amebelodon Sinclairi Sp Nov., Erwin H. Barbour
Amebelodon Sinclairi Sp Nov., Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
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.
The Mandible Of Amebelodon Fricki, Erwin H. Barbour
The Mandible Of Amebelodon Fricki, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
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 …
Forty-Third Annual Meeting Of The Iowa Academy Of Science, April 26 And 27, 1929, Iowa Academy Of Science
Forty-Third Annual Meeting Of The Iowa Academy Of Science, April 26 And 27, 1929, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
Torynobelodon Loomisi, Gen Et. Sp. Nov., Erwin H. Barbour
Torynobelodon Loomisi, Gen Et. Sp. Nov., Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The group of proboscideans which we have called the shovel-tuskers or Amebelodonts, was announced in June, 1927,1 following the discovery of Amebelodon fricki. In the field season of 1928, two additional species were found which are represented by mandibular tusks. One of these is a tip of a large and unique tusk, numbered 2-3-9-28, S. and L., the collectors being Bertrand Schultz and John LeMar, both of the class of 1931, the University of Nebraska. It was found within 200 to 300 yards of the spot on his farm where Mr. A. S. Keith, Freedom, Frontier County, Nebraska, found …
Colloidal Content And Related Soil Factors As Indicators Of Site Quality, Irvine T. Haig
Colloidal Content And Related Soil Factors As Indicators Of Site Quality, Irvine T. Haig
Yale School of the Environment Bulletin Series
This paper presents a study of the correlation between soil colloidal content and soil productiveness and hence a measure of the value of colloidal content in determining site quality. The character of this investigation also permitted incidental observation and comment on the relative value of organic matter, soil acidity, and soil type and class as similar measures. The findings are directly applicable to the forest soils of southern Connecticut and, more particularly, to such of these soils as occur commonly in the vicinity of New Haven. Since these soils are typical of the brown, weakly podsolized forest soils of southern …
Some Aspects Of Soil Moisture In The Forest, Ian J. Craib
Some Aspects Of Soil Moisture In The Forest, Ian J. Craib
Yale School of the Environment Bulletin Series
By determining the moisture content of carefully selected soil samples taken at various depths down to three feet, the moisture content of soils in the forest and in the open have been compared. The soils investigated were similar in their mechanical properties. Part I is an investigation of the effect of forest cover on the amount of water in the soil over the growing season and its availability. Part II is an investigation of the effect of root competition on the available water supply of forest soils.
Roster And Records Of Secretary: 1903-1929, Iowa Academy Of Science
Roster And Records Of Secretary: 1903-1929, Iowa Academy Of Science
Iowa Academy of Science Documents
Meeting minutes, conference programs, and more from the Iowa Academy of Science during the years 1903-1929.
The Mandibular Tusks Of Amebelodon Fricki, Erwin H. Barbour
The Mandibular Tusks Of Amebelodon Fricki, Erwin H. Barbour
Bulletin of the University of Nebraska State Museum (1924–2023)
The ponderous mandible of the great shovel-tusked mastodon, Amebelodon fricki, was figured and described before it was practicable to remove the plaster cinches. In the meantime, this rare specimen has lain on its sand table awaiting the time when sections and casts could be made before mounting it permanently. A rare specimen, especially if heavy, unwieldy, and fragile, is rarely dismantled for study after it is mounted and installed in its case. A gelatine cast of the alveoli has been made, and through the assistance of Mr. Murray Jerome Roper, a cast of the left mandibular tusk has just been …
Forty-First Annual Meeting Of The Iowa Academy Of Science, May 6 And 7, 1927, Iowa Academy Of Science
Forty-First Annual Meeting Of The Iowa Academy Of Science, May 6 And 7, 1927, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.