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Articles 112291 - 112320 of 114011
Full-Text Articles in Entire DC Network
Bulletin No. 136 - The Commercial Production Of Sugar Beet Seed In Utah, Frank S. Harris
Bulletin No. 136 - The Commercial Production Of Sugar Beet Seed In Utah, Frank S. Harris
UAES Bulletins
History of the beet sugar industry: The production of sugar from beets is a new industry when compared with the length of time that most kinds of crops have been used by man. It was only about 150 years ago that sugar was extracted from beets even in the laboratory, and at that time the percentage of sugar was so low that the expense of extracting was more than the sugar was worth. Just a little more than 100 years ago the first beet sugar factories were built, but it was nearly fifty years after this time before the industry …
Initiation Of Development In Nereis, E. E. Just
Initiation Of Development In Nereis, E. E. Just
Department of Biology Faculty Publications
No abstract provided.
Anthrax Or Charbon: Points Of Popular Interest, Harry Morris
Anthrax Or Charbon: Points Of Popular Interest, Harry Morris
LSU Agricultural Experiment Station Reports
No abstract provided.
Initiation Of Development In Nereis, E. E. Just
Initiation Of Development In Nereis, E. E. Just
Faculty Reprints
No abstract provided.
A Revision Of The Cestode Family Proteocephalidae, George Roger La Rue
A Revision Of The Cestode Family Proteocephalidae, George Roger La Rue
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Introduction
Several years ago while studying under Professor Henry B. Ward .at the University of Nebraska the writer began an investigation of a cestode parasitic in Amblystoma tigrinum (Green). That investigation resulted in a paper (La Rue 1909) in which a number of points in the anatomy of Proteocephalids were cleared up and certain problems were -outlined for investigation at an early date. In the meantime the writer became interested in the large number of Proteocephalids which Professor Ward had secured by work in the field and by exchange. The writer had also made some collections. A preliminary study of …
Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just
Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just
Department of Biology Faculty Publications
No abstract provided.
Dramatic Elements In American Indian Ceremonials, Virginia Shropshire Heath
Dramatic Elements In American Indian Ceremonials, Virginia Shropshire Heath
University Studies (University of Nebraska) (1888–1984)
"Poetry in general," says Aristotle, "seems to have sprung from two causes, each of them lying deep in our nature-first, the instinct of imitation ..., next, ... the instinct for 'harmony' and 'rhythm.'" Many of the lyric-legend-dance complexes of certain North American Indian religious ceremonials would seem to bear out this judgment. Indeed, in not a few of the unmistakably poetic expressions, there may be found well-defined dramatic elements suggesting the possibility of a developed, independent dramatic literature, had these savage peoples been left alone to initiate a civilization and culture of their own. The South American Indians were capable …
Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just
Breeding Habits Of The Heteronereis Form Of Platynereis Megalops At Woods Hole, Mass., E. E. Just
Faculty Reprints
No abstract provided.
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) …
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 …
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 …
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 …
Bulletin No. 135 - A Study In Annual Egg Production: Based On The Records Of A Flock Of Seven-Year-Old Hens And Their Progeny, E. D. Ball, Geo. Turpin, Byron Alder
Bulletin No. 135 - A Study In Annual Egg Production: Based On The Records Of A Flock Of Seven-Year-Old Hens And Their Progeny, E. D. Ball, Geo. Turpin, Byron Alder
UAES Bulletins
Experimental work in breeding for egg production was started with this flock of Single Comb White Leghorns in 1907. The flock of 1907 was hatched from eggs from a small flock that had been introduced into the plant two or three years before.
After two years' records of these flocks had been completed and studied it was found that nearly three-fourths of the first flock had made better records the second year than they did the first and that there was a great variation in the two years' records of individual hens. This raised the question of whether the first …
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 …
Bulletin No. 133 - Irrigation And Manuring Studies: The Effect Of Varying Quantities Of Irrigation Water And Manure On The Growth And Yield Of Corn, Frank S. Harris
Bulletin No. 133 - Irrigation And Manuring Studies: The Effect Of Varying Quantities Of Irrigation Water And Manure On The Growth And Yield Of Corn, Frank S. Harris
UAES Bulletins
Indian corn is one of the most important crops raised by American farmers. Anything that affects the corn crop of the American farmers. Anything that affects the corn crop of the United States has an influence on the prosperity of the entire country. From an economic point of view therefore, it is important to know as much about the production of this crop as possible. The corn plant also offers an excellent field for scientific investigation independent of any economic bearing.
V. Mammalian Fossils From Devil’S Gulch, Erwin Barbour
V. Mammalian Fossils From Devil’S Gulch, Erwin Barbour
University Studies (University of Nebraska) (1888–1984)
The fauna of the beds at Devil's Gulch and vicinity is rich and varied, and promises to fill certain gaps in the Pliocene and early Pleistocene, where investigation seems especially desirable. The object of this paper is to make a partial faunal list and to describe two new proboscideans and a new equine.
Circular No. 17 - The Number And Distribution Of Licensed Stallions And Jacks In The State In 1913, W. E. Carroll
Circular No. 17 - The Number And Distribution Of Licensed Stallions And Jacks In The State In 1913, W. E. Carroll
UAES Circulars
Table No. 1 shows the number of licensed stallions and jacks of each breed in each county of the State. It will be seen that 439 licenses have been issued. Of these 92 are grades, which means that 79 per cent of all the licensed animals of the State are purebred. Cache County leads with 59 licensed animals, including 8 grades. Sevier County stands second with 51, including 8 grade animals. Sanpete County has 43 licensed animals, including 10 grades. Utah County has 44, two of which are grades. The number of licensed animals vary in the other counties from …
Circular No. 16 - Better Seed, Frank S. Harris
Circular No. 16 - Better Seed, Frank S. Harris
UAES Circulars
It is impossible to produce good crops unless good seed is used. The soil may be of the best quality and it may be prepared in the most thorough manner, the supply of moisture may be ample, the season may be the most favorable, yet all these count for little if worthless seed is planted.
Bulletin No. 131 - Variety Tests Of Field Crops In Utah, Frank S. Harris, J. C. Hogenson
Bulletin No. 131 - Variety Tests Of Field Crops In Utah, Frank S. Harris, J. C. Hogenson
UAES Bulletins
The number of varieties of practically all the field crops is now very great, and is increasing every year. Each variety has certain growers who believe in it and who do what they can to make it more widely grown. As a result many varieties of crops are found in most every farming community.
This condition is often bad, since it is impossible to build up a good market with a great mixture of varieties of any crop. A much better price can be obtained if each community offers for sale large quantities of a few standard types, rather than …
Bulletin No. 132 - Minor Dry Land Crops At The Nephi Experiment Farm, P. V. Cardon
Bulletin No. 132 - Minor Dry Land Crops At The Nephi Experiment Farm, P. V. Cardon
UAES Bulletins
The investigations conducted at the Nephi substation deal primarily with cereals; other crops, such as alfalfa, peas, corn, potatoes, etc., have occupied only a secondary position in the work of this station. This necessarily has been true because the experiments are confined to dry-land practices, and the cereals unquestionably comprise the basal crops for dry-land farming as it is now understood and practiced in Utah. No crops have been found as yet which yield so profitably on the dry lands as do the cereals, especially winter varieties.
The purpose of this bulletin is to review the work done on the …
The Inheritance Of A Recurring Somatic Variation In Variegated Ears Of Maize, R. A. Emerson
The Inheritance Of A Recurring Somatic Variation In Variegated Ears Of Maize, R. A. Emerson
Nebraska Agricultural Experiment Station: Historical Research Bulletins
The inheritance of variegation has special interest and importance in genetics. In this paper I shall present data from maize and attempt to show how they can be interpreted in strictly Mendelian terms.
Bulletin No. 130 - The Change In Weight Of Grain In Arid Regions During Storage, Frank S. Harris, George Thomas
Bulletin No. 130 - The Change In Weight Of Grain In Arid Regions During Storage, Frank S. Harris, George Thomas
UAES Bulletins
In handling grain the question of the changes that may occur in weight after threshing is always before the dealer. If there is any considerable loss during storage his profits are consumed, while if there is a gain it is possible for him to work on a much closer margin.
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Fiscal Year Ending June 30, 1914, South Dakota State College Of Agriculture And Mechanical Arts
Annual Report Of The Director Of The South Dakota Agricultural Experiment Station For Fiscal Year Ending June 30, 1914, South Dakota State College Of Agriculture And Mechanical Arts
Agricultural Experiment Station and Research Farm Annual Reports
No abstract provided.
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.
Contributions To A Science Of Nematology, Nathan Augustus Cobb
Contributions To A Science Of Nematology, Nathan Augustus Cobb
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Contents
I. Antarctic Marine Free-Living Nematodes of the Shackleton Expedition.
II. North American Free-Living Fresh-Water Nematodes.
III. The Asymmetry of the Nematode Bunonema inequale, n. sp.
IV. Selachinema, a New Nematode Genus with Remarkable Mandibles.
V. Notes on Nemas.
VI. The Mononchs, a Genus of Free-Living Predatory Nematodes.
VII. Filter-Bed Nemas: Nematodes of the Slow Sand Filter-Beds of American Cities.
VIII. The Orders and Classes of Nemas.
IX. One Hundred New Nemas (Type Species of 100 New Genera).
X. Howardula benigna, a Nemic Parasite Cucumber-Beetle.
XI. Marionella.
XII. Greeffiella.
XIII. An Amendation of Hoplolaimus …
Bulletin No. 128 - Blooming Periods And Yields Of Fruit In Relation To Minimum Temperatures, A. B. Ballantyne
Bulletin No. 128 - Blooming Periods And Yields Of Fruit In Relation To Minimum Temperatures, A. B. Ballantyne
UAES Bulletins
As noted In Bulletin 124, the Southern Utah Experiment Farm is located in Washington Field, southeast of St. George. This tract of land is comparatively low and flat and bounded on three sides by hills. On the front or north side it extends to the Rio Virgin river, which enters and leaves the valley through small canyons. This entire area has a very poor water and air drainage. Frosts occur here much more severely and much later than on the surrounding bench land.
Bulletin No. 129 - Codling Moth Studies In 1911: The Driving Spray Under Excessively Wormy Conditions, E. D. Ball, W. M. Ball
Bulletin No. 129 - Codling Moth Studies In 1911: The Driving Spray Under Excessively Wormy Conditions, E. D. Ball, W. M. Ball
UAES Bulletins
Spraying experiments against the codling moth were carried on upon the Smart orchard until the number of worms per tree was reduced to such an extent that no accurate comparisons could be made between different treatments. As a result of the work on this and other orchards, practically every commercial orchard in the valley was by this time well sprayed and the worms reduced to a point where one driving spray per season would keep them under control.
In the meantime a number of questions arose which required very wormy conditions to adequately investigate. Search was therefore made for orchards …
Circular No. 15 - Pastures And Pasture Grasses For Utah, F. S. Harris
Circular No. 15 - Pastures And Pasture Grasses For Utah, F. S. Harris
UAES Circulars
Since the earliest records of man his domestic animals have secured a large proportion of their forage from pastures. Before crops were planted and harvested by man the wild grasses furnished the chief food for numerous kinds of animals, and the cutting and curing of hay came as a later development to supplement natural pasturage in seasons of scarcity.
Circular No. 14 - Housing Farm Poultry, Byron Alder
Circular No. 14 - Housing Farm Poultry, Byron Alder
UAES Circulars
With the exception, perhaps, of actual starvation of the fowls themselves, there is no other factor in connection with the keeping of poultry that will affect egg production and good vigorous growth so decidedly as poor or improper methods of housing. This circular sets forth some of the essentials of a good house for Utah conditions, and offers plans of three houses in which an attempt has been made to include these essentials. The ideas and plans presented here do not represent anyone person's original work. They are a compilation of the work done on this subject by those who …