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Articles 44701 - 44730 of 44816
Full-Text Articles in Entire DC Network
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 …
Charles Peirce At Johns Hopkins, Ellery W. Davis
Charles Peirce At Johns Hopkins, Ellery W. Davis
Mid-West Quarterly (1913–1918)
In the company of scholars and investigators which Daniel Coit Gilman gathered at Baltimore in the seventies and eighties was Charles S. S. Peirce, son of the Harvard mathematician, Benjamin Peirce, and considered by Sylvester (surely a capable judge) “a far greater mathematician than his father.” But great though his mathematical powers were, it is not they alone which chiefly distinguished him among the scientists of his generation. Mathematics was simply one of the many fields of thought tilled by his active brain. At Harvard it was in chemistry that he had chiefly distinguished himself, but it might as well …
Summary Of Two Years' Study Of Insects In Relation To Pellagra, Allan H. Jennings
Summary Of Two Years' Study Of Insects In Relation To Pellagra, Allan H. Jennings
Harold W. Manter Laboratory of Parasitology: Library Materials
Excerpt:
With the growing interest in pellagra, following the authoritative recognition of its presence in the United States in 1907, the study of its etiology was taken up by various investigators and the several theories of causation were subjected to close scrutiny.
Prominent among these theories was that of insect transmission, first advanced by Sambon, who limited this function to the species of blood-sucking gnats comprising the genus Simulium.
The importance of the disease and the possibility of such a factor in its causation, led the Bureau of Entomology, late in 1911, to undertake an investigation of the subject …
Experimental Ingestion By Man Of Cysticerci Of Carnivore Tapeworms, Maurice C. Hall
Experimental Ingestion By Man Of Cysticerci Of Carnivore Tapeworms, Maurice C. Hall
Harold W. Manter Laboratory of Parasitology: Library Materials
Excerpt:
Having experimentally eaten the larvae of dog tapeworms on two occasions, I undertook to look up the literature on this subject in connection with the ingestion of Cysticercus pisiformis to check the frequently quoted record of T. pisiformis from man. I find that there are more cases of the sort than I had supposed, so I have collected these cases in connection with a recent similar case of my own.
Taenia pisiformis, under the name of T. serrata, has been recorded as a parasite of man by Vital ( 1874), who records, in effect, two cases. One …
The Destruction Of The Vitality Of Cysticercus Bovis By Freezing, Brayton H. Ransom
The Destruction Of The Vitality Of Cysticercus Bovis By Freezing, Brayton H. Ransom
Harold W. Manter Laboratory of Parasitology: Library Materials
First two paragraphs:
The question as to the length of time Cysticercus bovis may survive after the death of its host has been quite definitely settled by the researches of Perroncito, Zschocke, Ostertag and others. Perroncito (1877) found that the cysticerci in an artificially infested calf were all dead fourteen days after the slaughter of the animal. However, Zschocke (1896) succeeded in infesting the human subject with a tapeworm by feeding five cysticerci from beef kept from fourteen to sixteen days after slaughter. No infestation followed the swallowing of five cysticerci from beef kept twenty-one days after slaughter. Ostertag (1897) …
Observations On The Eggs Of Ascaris Lumbricoides, Winthrop D. Foster
Observations On The Eggs Of Ascaris Lumbricoides, Winthrop D. Foster
Harold W. Manter Laboratory of Parasitology: Library Materials
First paragraph:
The appearance of the ova of Ascaris lumbricoides as seen in fresh feces is so well known to physicians and zoologists that description is unnecessary. Occasionally, however, ascarid eggs are found which differ so widely from the normal egg of Ascaris lumbricoides as to cause considerable confusion on the part of observers, and may even be so misleading in appearance as to be attributed to another species. One of these atypical forms, the unfertilized egg of Ascaris lumbricoides, first reported by Miura and Nishiuchi (1902), is by no means rare, and is usually seen in the feces …
Dr. Nott's Theory Of Insect Causation Of Disease, William A. Riley
Dr. Nott's Theory Of Insect Causation Of Disease, William A. Riley
Harold W. Manter Laboratory of Parasitology: Library Materials
Excerpt:
The danger in using isolated sentences from an article as a basis for interpreting the author's theories, is generally recognized, but sometimes the most careful workers fall into the trap. Once the mistaken interpretation is published, it may be copied over and over again until it rises to the dignity of a dogma.
A striking illustration is afforded by the practical unanimity with which writers on the subject of insects and disease credit Dr. Josiah Nott with being the earliest to formulate definitely the theory of mosquito transmission of yellow fever.
Nuttall, in his classic monograph On the Role …
Variation In Oxyurias: Its Bearing On The Value Of A Nematode Formula, Stanley B. Fracker
Variation In Oxyurias: Its Bearing On The Value Of A Nematode Formula, Stanley B. Fracker
Harold W. Manter Laboratory of Parasitology: Library Materials
Excerpt:
One of the most difficult problems in zoologic science is the classification of round worms. Authors and lecturers, after a carefully outlined and definitely arranged discussion of trematodes and cestodes, are compelled to consider nematodes in a somewhat desultory and inaccurate fashion. Two reasons for this may be given, the greater being the apparent lack of a basis for determining the phylogeny of the major groups, a condition with which we are not at present concerned. The other obstacle is the difficulty of differentiating between species and uncertainty as to the value of different kinds of taxonomic characters. The …
Rhabditin, Nathan Augustus Cobb
Rhabditin, Nathan Augustus Cobb
Harold W. Manter Laboratory of Parasitology: Library Materials
Excerpt:
Rhabditin is the term applied by the writer to an organic substance, the type form of which is found crystallized in brilliantly doubly refractive spheres arranged in a definite way in the cells of the intestine. Rhabditis monhystera Bütschli, and other nematodes, in whose metabolism it plays an important role.
Rhabditin crystallizes under the life influences of Rhabditis monhystera into spheres, about 1 to 3 microns in diameter, which are rather slowly soluble in water, rapidly so in alkalies and acids—in the latter without effervescence—and are insoluble or but very slowly soluble in alcohol, glycerin, xylol and oils. The …
I. On The Distribution And Composition Of The Humus Of The Loess Soils Of The Transition Region, Morris Blish
I. On The Distribution And Composition Of The Humus Of The Loess Soils Of The Transition Region, Morris Blish
University Studies (University of Nebraska) (1888–1984)
The main object of this investigation has been to determine the distribution of the humus, to a depth of six feet, throughout the soils in representative virgin prairies of the so-called “transition region" of Nebraska. This region is the large area which extends westward from the Missouri River for a distance of over three hundred miles and which is covered, for the most part, with loess soil. This is, agriculturally, the most important soil in the state of Nebraska, and covers more than half the area of the state. The term "transition region" is employed to convey the idea of …
Synopsis Of The Conjugate Algae-Zygophyceae, Charles E. Bessey
Synopsis Of The Conjugate Algae-Zygophyceae, Charles E. Bessey
School of Biological Sciences: Faculty Publications
A dozen or more years ago the writer prepared a series of papers on these plants, which were published in volumes 21, 22 and 23 of these Transactions, and now it seems that time enough has elapsed to warrant another paper dealing with the same group, and including such revisions as are now made necessary because of our better knowledge of their structure, and the structure of the nearly related plants.
Literature And The New Anti-Intellectualism, Philo M. Buck, Jr.
Literature And The New Anti-Intellectualism, Philo M. Buck, Jr.
Mid-West Quarterly (1913–1918)
" Never has he drawn so deeply from the well that is the human heart; never so near those invisible heights which are the soul." The reviewer who wrote this sentence probably meant that the author of the book he so enthusiastically welcomed wrote with a little more than the ordinary insight. Indeed if we are to judge from the encomiums in our less critical reviews the world has never been so blessed with novels and plays which touch the secret springs of the heart. The old fiction had generalised, had conventionalised, much as the old art had done. This, …
Theories Of Cosmic Evolution, Ellery W. Davis
Theories Of Cosmic Evolution, Ellery W. Davis
Mid-West Quarterly (1913–1918)
The framing of theories is an occupation in which men like to indulge. To imagine how things may have come about is probably the nearest approach to a creative act to which we finite beings will ever attain; and the field of astronomy has been an especially tempting one in which to try our creative powers. We like to do things on a large scale; and it is quite as easy to construct, in imagination, a planet or a solar system as something less pretentious. From the first men have been explaining how the cosmos came to be; naturally these …
Lionel Johnson, T. K. Whipple
Lionel Johnson, T. K. Whipple
Mid-West Quarterly (1913–1918)
A score of years have passed since that courageous band of young Englishmen who styled themselves the Rhymers' Club tried to transplant the air of the Latin Quarter into London, by meeting at the Cheshire Cheese to discuss welsh rarebits, ale, and each other's verses. Time has played havoc with their ranks, and to some extent with their works. Some of them have died; several have abandoned song for scholarship; Mr. Le Gallienne has migrated to America; Mr. Yeats devotes himself to managing the Irish renascence. Of the two most characteristic voices of the period, one, that of Ernest Dowson, …
The Russian Merchant Marine, Edwin Maxey
The Russian Merchant Marine, Edwin Maxey
Mid-West Quarterly (1913–1918)
The rise of the Russian merchant marine is more intimately bound up with national politics than is that of any other of the merchant marines of the world. It will be necessary, therefore, in discussing its development, to call attention to the political conditions which furnished the impetus to the development of the merchant fleets of Russia. The subject, in other words, is not purely a business one, but is in part political.
The Literary Interregnum, Louise Pound
The Literary Interregnum, Louise Pound
Mid-West Quarterly (1913–1918)
In a Phi Beta Kappa address given last year before certain university audiences of the middle west, the head of the Columbia School of Journalism, Dr. Talcott Williams, made something of a text of the dearth of contemporary literary activity of the highest order. His reference was chiefl y to poetry, but he seemed to feel that there is now relative sterility nearly everywhere in the literary field. Th e period seemed to him not perhaps so much an interregnum, for that holds promise of succession to vacant thrones, as a period of decline; and this decline he felt to …
The Southwestern Cowboy Songs And The English And Scottish Popular Ballads, Louise Pound
The Southwestern Cowboy Songs And The English And Scottish Popular Ballads, Louise Pound
Department of English: Faculty Publications
Several writers recently have found analogy between the conditions attending the growth of cowboy songs in isolated communities in the Southwest, and the conditions under which arose the English and Scottish popular ballads—those problematic pieces which form so special a chapter in the history of English poetry. Mr. Lomax, the chief collector of southwestern folk songs, notes, when speaking of western communities, how "illiterate people and people cut off from newspapers and books, isolated and lonely—thrown back on primal resources for entertainment and for the expression of emotion—utter themselves through somewhat the same character of songs as did their forefathers …
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.
Cross-Bedding In The White River Formation Of Northwestern South Dakota, Dean E. Winchester
Cross-Bedding In The White River Formation Of Northwestern South Dakota, Dean E. Winchester
United States Geological Survey: Staff Publications
Rocks of White River (Oligocene) age have been known for many years to constitute numerous isolated buttes and mesas in the northwest corner of South Dakota, but no detailed study of their character and structural relations had been made until 1911, when, during an examination of the lignite area of that country, the writer had occasion to study the relation of the younger rocks to those containing lignite beds.
Todd, in 1895, recognized the White River formation in the Slim Buttes and called attention to the area in the following language:
3. Miocene beds, both White River and Loup Fork, …
Connecticut Soldiers In The Pequot War Of 1637 (1913), James Shepard
Connecticut Soldiers In The Pequot War Of 1637 (1913), James Shepard
Electronic Texts in American Studies
“With Proof of Service, a Brief Record for Identification, and References to Various Publications in Which Further Data May Be Found.”
The plan of the compiler is to present, for the first time, a complete list of the Connecticut men in the Pequot War, as given in various compilations of the several authors who have made a special study of the subject in connection with the history of one or more of the three river towns; together with the places from which they are said to have enlisted and the authority for the same. We have not attempted to verify …
Research Bulletin 3, Studies On The Relation Of The Non-Available Water To The Hygroscopic Coefficient, 1913
University of Nebraska Historical Extension: Bulletin
Research Bulletin 3, Studies on the Relation of the Non-available Water to the Hygroscopic Coefficient, 1913
Two Lincoln (Nebraska) Typhoid Fever Epidemics Of 1911 And 1912., Herbert H. Waite
Two Lincoln (Nebraska) Typhoid Fever Epidemics Of 1911 And 1912., Herbert H. Waite
School of Biological Sciences: Faculty Publications
On August 29, 1912, I was requested by the Board of Health of the city of Lincoln to make an investigation to determine if possible the origin and cause of an outbreak of a disease reported as typhoid fever which was then prevailing. This outbreak was said to be most prevalent in one particular portion of the city and consequently attention was turned to that portion. Of the cases reported an investigation was made of over 60 individuals and after considering all the probable causes for the majority of those affected the conclusion was reached that all could be logically …
The Present Methods Of Teaching Entomology, J. H. Comstock
The Present Methods Of Teaching Entomology, J. H. Comstock
Department of Entomology: Faculty Publications
The present methods of teaching entomology followed in the United States have been developed almost entirely by men now teaching this subject. A second generation of teachers has begun its work; but the first is still on the stage. We h3i¥e progressed far enough, however, to make it worth while for the teachers to compare methods, in order that each may profit by the experience of the others. In a conference of this kind the contribution of each to the discussion will be, naturally, at first, merely a statement of the methods evolved in our several widely separated institutions. Then …
Present Methods Of Teaching Entomology, H. T. Fernald
Present Methods Of Teaching Entomology, H. T. Fernald
Department of Entomology: Faculty Publications
In teaching entomology, much depends upon the ultimate aim of the student. A course in introductory entomology, whether as a required or an elective subject is sure to include many students who will not continue the subject farther. It is at least probable, that these students will form over half of the class, and accordingly, the introductory treatment should be arranged on the basis of the greatest good to the greatest number. This will usually mean some slight knowledge of insect anatomy, particularly external anatomy, and a general survey of insects as a group, with special attention to the pests …
The Present Methods Of Teaching Entomology, Herbert Osborn
The Present Methods Of Teaching Entomology, Herbert Osborn
Department of Entomology: Faculty Publications
In a discussion of the methods of teaching entomology, it is almost necessary to take a hasty view of the growth of the subject and of the different methods of imparting knowledge in it during the past half century. We need scarcely go back of this, because for the United States, at least, the growth of the teaching of entomology as a subject included in a college curriculum has had its growth within that time. In fact, practically all of the development of the teaching outside of two or three localities has been within the last twenty-five' years. Naturally the …
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Present Methods Of Teaching Entomology At The University Of Nebraska, Lawrence Bruner
Department of Entomology: Faculty Publications
'When our Secretary sent out his preliminary notification of this meeting and asked me to take part in a discussion of "present methods of teaching Entomology," the matter at first seemed of little importance so far, at least, as the speaker was concerned. However, after giving the subject some thought I have decided that it might be well at least to take the time and trouble to attempt to explain briefly a few of the methods by which the student in Nebraska is enabled to absorb some entomological information. In order to do this with an unbiased feeling it might …
Geographical Influences In The Development Of Nebraska, George E. Condra
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.
Wonder-Working Providence Of Sions Saviour In New England 1628-1651, Edward Johnson, J. Franklin Jameson
Wonder-Working Providence Of Sions Saviour In New England 1628-1651, Edward Johnson, J. Franklin Jameson
Electronic Texts in American Studies
Late in the year 1653, but under date of 1654, Nathaniel Brooke, a London publisher, "at the Angel in Cornhill," brought out a small octavo book of two hundred and thirty-six pages, entitled A History of New-England, from the English planting in the Yeere 1628 untill the Yeere 1652, etc. The title, inexact in any case, for the book is rather a history of Massachusetts than of all New England, was evidently affixed by the publisher. His advertisements show that at one time he thought of giving the book the title Historicall Relation of the First Planting of the English …
Coal In Nebraska, Roy V. Pepperberg
Coal In Nebraska, Roy V. Pepperberg
Conservation and Survey Division: Faculty and Staff Publications
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.
Paleogeographic Maps Of North America, Bailey Willis
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 …