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Articles 158611 - 158640 of 159277
Full-Text Articles in Entire DC Network
The Life History Of The Dewberry Fruit Worm Cacoecia Rosaceana (Harr.) In Utah, Merlin W. Allen
The Life History Of The Dewberry Fruit Worm Cacoecia Rosaceana (Harr.) In Utah, Merlin W. Allen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The purpose of this study has been to determine the identity and the life history of certain larvae attacking dewberry fruits and foliage in a few sections of Utah. The dewberry fruit worm as it was called until it was definitely identified the oblique-banded leaf-roller, was first observed by farmers at Granite and Butlerville in 1932. Since 1934 it has been found affecting dewberries in other parts of northern Utah.
This investigation was begun in the spring of 1935 and continued until the fall of 1936, being made possible through the Utah Agricultural Experiment Station, Department of Entomology, and with …
Fifty-First Annual Meeting Of The Iowa Academy Of Science And The Sixth Annual Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1937, Iowa Academy Of Science
Fifty-First Annual Meeting Of The Iowa Academy Of Science And The Sixth Annual Convention Of The Junior Academy Of Science Of Iowa, April 16 And 17, 1937, Iowa Academy Of Science
Iowa Academy of Science Documents
No abstract provided.
Pectinatella Magnifica Leidy An Occasional River-Pest In Iowa, S. W. Geiser
Pectinatella Magnifica Leidy An Occasional River-Pest In Iowa, S. W. Geiser
Field and Laboratory
The common fresh-water Bryozoan, Pectinatella magnifica Leidy, with which this paper deals, is widely distributed in the United States, Northern Germany, and Czechoslovakia.
Whole Issue Nebraska Bird Review (April 1937) 5(2)
Whole Issue Nebraska Bird Review (April 1937) 5(2)
Nebraska Bird Review
Contents
Banding and Bird Study. By O. A. Stevens ... 27
General Notes ... 29
Editorial Page ... 34
In Memoriam. Lawrence Bruner ... 35
In Memoriam, Lawrence Bruner, Myron H. Swenk
In Memoriam, Lawrence Bruner, Myron H. Swenk
Nebraska Bird Review
On January 30, 1937, at his home at 3033 Deakin Street in Berkeley, California, Lawrence Bruner, pioneer American economic entomologist and a world authority on grasshoppers and related insects (Orthoptera), as well as the person who more than any other individual was responsible for the organization of the Nebraska Ornithologists’ Union, passed away after a severe illness of a few days that culminated a rather extended period of gradually declining health. It is difficult to epitomize any account of the life accomplishments of this man, because they were so many and varied, and perhaps for this purpose there …
How Two Captive Young Beavers Constructed A Food Pile, Thos. S. Roberts
How Two Captive Young Beavers Constructed A Food Pile, Thos. S. Roberts
Journal of the Minnesota Academy of Science
No abstract provided.
The Comparative Permeability Of Woods To Liquids, Harvey D. Erickson
The Comparative Permeability Of Woods To Liquids, Harvey D. Erickson
Journal of the Minnesota Academy of Science
No abstract provided.
Studies Of Prenatal Development In Farm Animals, L. M. Winters
Studies Of Prenatal Development In Farm Animals, L. M. Winters
Journal of the Minnesota Academy of Science
The central objective of these studies has been to gather as accurate data as possible regarding normal prenatal development in farm animals. Once this is established as a base we or other workers will be in a position to study the specific effects of unfavorable environments, such as deficiency rations, excess fat, etc. Our work has progressed far enough so that we are now incorporating some of the latter in our studies.
Intravenous Pentobarbital Anesthesia In Rabbits, Arnold H. Maloney
Intravenous Pentobarbital Anesthesia In Rabbits, Arnold H. Maloney
Faculty Reprints
No abstract provided.
Whole Issue Nebraska Bird Review (January 1937) 5(1)
Whole Issue Nebraska Bird Review (January 1937) 5(1)
Nebraska Bird Review
Contents
Trees and Shrubs of Value as a Source of Food For Birds in the Sandhill Region of Central Nebraska. By Glenn Viehmeyer............... 3
Here and There with the N.O.U. Members............... 5
General Notes ...............6
Editorial Pages ...............15
The 1936 Migration Season ...............16
Annual Meetings of the Nebraska Ornithologists' Union ...............24
The Fate Of The Indigenous, Arthur N. Wilcox
The Fate Of The Indigenous, Arthur N. Wilcox
Journal of the Minnesota Academy of Science
No abstract provided.
What Science Contributes To Agriculture, W. G. Wiegand
What Science Contributes To Agriculture, W. G. Wiegand
Journal of the Minnesota Academy of Science
No abstract provided.
Evidences Of Sterility In The Hyacinthus Orientalis L., Mary Adelbert
Evidences Of Sterility In The Hyacinthus Orientalis L., Mary Adelbert
Bachelors’ Theses
In this paper, it will be the purpose of the writer to discuss the types of sterility found in the Hyacinthus orientalis and to locate the causes of this condition in the flower, with a view to possible improvement of the plant for purposes of cultivation. In speaking of a type of sterility, reference is made to some well-defined and frequently recurring condition which breaks that chain of processes that leads normally to fruit and seed production.
The Influence Of Soil Profile Horizons On Root Distribution Of White Pine (Pinus Strobus), Harold J. Lutz, Joseph B. Ely Jr., Silas Little Jr.
The Influence Of Soil Profile Horizons On Root Distribution Of White Pine (Pinus Strobus), Harold J. Lutz, Joseph B. Ely Jr., Silas Little Jr.
Yale School of the Environment Bulletin Series
No abstract provided.
The Skeletal, Muscular, Vascular, And The Digestive Systems Of The Ferret (Mustela Putorius) And A Comparison Of These Systems With Those Of The Domestic Cat (Felis Domesticus)., Arthur Pincus Skwerer
The Skeletal, Muscular, Vascular, And The Digestive Systems Of The Ferret (Mustela Putorius) And A Comparison Of These Systems With Those Of The Domestic Cat (Felis Domesticus)., Arthur Pincus Skwerer
Electronic Theses and Dissertations
No abstract provided.
Crow-Waterfowl Relationships Based On Preliminary Studies On Canadian Breeding Grounds, E. R. Kalmbach
Crow-Waterfowl Relationships Based On Preliminary Studies On Canadian Breeding Grounds, E. R. Kalmbach
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
With the object of obtaining a current insight into the relationship of crows to waterfowl on their breeding grounds, a study was inaugurated in the spring of 1934 and continued through the nesting season of that and the following year. As originally planned, it called for field studies both in Canada and in the northern United States, but drought conditions had so drastically reduced the breeding population of ducks within our borders by the spring of 1934 that, after a futile effort to locate suitable areas in this country, plans were changed and the studies were restricted to Canadian areas …
Diseases Of Upland Game Birds, J. E. Shillinger, L. C. Morley
Diseases Of Upland Game Birds, J. E. Shillinger, L. C. Morley
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Until recently the diseases of upland game birds received comparatively little specific study, except in a few outbreaks in which serious losses were observed. Though highly destructive, many of these outbreaks were of such short duration that the investigations undertaken were chiefly to learn the cause of death and usually were discontinued when losses were no longer noticeable. It has become increasingly evident, however, that every year great numbers of game birds die of disease, the decreases in their numbers frequently occurring in sections closed to hunting, even though food, cover, and other environmental conditions appear ideal. The disease problems …
Local Bird Refuges, W. L. Mcatee
Local Bird Refuges, W. L. Mcatee
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Birds appeal strongly to the interests and affections of mankind. Not only do they charm by their graceful forms, harmonious colors, sprightly actions, and usually pleasing notes, but they have an even more important claim upon our esteem because of their great economic value.
Birds feed upon practically all insect pests. They are voracious, are able .to move freely from place to place, and exert a steady influence in keeping down the swelling tide of insect life.
For economic as well as for esthetic reasons, therefore, an effort should be made to attract and protect birds and to increase their …
Conjugation Of Various Amino Acids With Insulin In Liquid Ammonia, Charles Jon Caul
Conjugation Of Various Amino Acids With Insulin In Liquid Ammonia, Charles Jon Caul
Master's Theses
No abstract provided.
Reduction Products Of D-Glucoheptulose, Stanley John Kuman
Reduction Products Of D-Glucoheptulose, Stanley John Kuman
Master's Theses
No abstract provided.
The Influence Of Overgrazing On The Density And Number Of Palatable And Unpalatable Desert Forage Plants, John H. Mcguire
The Influence Of Overgrazing On The Density And Number Of Palatable And Unpalatable Desert Forage Plants, John H. Mcguire
Theses and Dissertations
The data for this problem were collected at the Desert Range Experiment Station and on adjoining public domain lands during the summer of 1934, for the purpose of studying the influence of overgrazing on the increase of palatable and unpalatable desert forage plants. A vegetative description of the two areas studied has been prepared and presented.
Bulletin No. 275 - Types Of Farming In Utah, Marion Clawson, Walter U. Fuhriman, George T. Blanch, W. Preston Thomas
Bulletin No. 275 - Types Of Farming In Utah, Marion Clawson, Walter U. Fuhriman, George T. Blanch, W. Preston Thomas
UAES Bulletins
A large portion of the agriculture of Utah, outside of the desert range areas, is characteristically heterogeneous rather than homogeneous in character. Marked differences in size of farm, in crops grown, in livestock kept, in yields, and in farm organization occur within short distances. This diversity is due in large measure to differences in soil, elevation, topography, and other physical features and to climatic characteristics such as amount, kind, and distribution of precipitation and length of growing season. The physical and climatic features are the chief determinants of the amount of water potentially available for the irrigation of the crop …
Bulletin No. 276 - How Science Aids Utah Agriculture
Bulletin No. 276 - How Science Aids Utah Agriculture
UAES Bulletins
Biennial Report of the Director, 1934-35 and 1935-36 Agricultural Experiment Station Utah State Agricultural College, Logan, Utah
Bulletin No. 274 - Influence Of Rotation And Manure On The Nitrogen, Phosphorus, And Carbon Of The Soil, J. E. Greaves, C. T. Hirst
Bulletin No. 274 - Influence Of Rotation And Manure On The Nitrogen, Phosphorus, And Carbon Of The Soil, J. E. Greaves, C. T. Hirst
UAES Bulletins
All agricultural plants require carbon, hydrogen, oxygen, nitrogen, calcium, potassium, magnesium, sulfur, phosphorus, iron, and probably traces of other elements for their normal growth and fruition. The growth of farm crops is dependent upon an available supply of these elements, and the extent of growth is governed by the one present and available in least quantity in proportion to the plant's needs. Of the essential elements, all plants secure two (carbon and oxygen) from the air, one (hydrogen) from the water, and the others from the soil. Most soils contain sufficient plant nutrients for normal plant production, with the exception …
Whole Issue Nebraska Bird Review (October 1936) 4(4)
Whole Issue Nebraska Bird Review (October 1936) 4(4)
Nebraska Bird Review
Contents
Hand-Raising Young Black-headed Grosbeaks. By Mrs. George W. Trine ... 79
General Notes ... 81
The 1936 Migration Season ... 84
Here and There with the N.O.U. Members ... 97
Bird Mortality in the 1936 Nebraska Grasshopper Poisoning Campaign ... 98
Index ... 100
Water Relations To Germination Of Zea Mays, Mary Hood
Water Relations To Germination Of Zea Mays, Mary Hood
Masters Theses & Specialist Projects
Four experiments regarding water relations to germination of zea mays.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and filter paper used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and filter paper used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and cotton used as water absorbent.
- Per cent of water absorbed by seeds of zea mays with supply of water controlled and cotton used as water absorbent.
An Interpretive Study Of Some Kentucky Biologists, Rachel Winstead
An Interpretive Study Of Some Kentucky Biologists, Rachel Winstead
Masters Theses & Specialist Projects
This study was undertaken with the idea of bringing together information concerning some of the most important Kentuckians who have made contributions to the biological sciences. In order that we may better understand and appreciate the work done by these men, it was thought best to give a brief discussion of the major periods in the history of biological development. An attempt will be made to interpret the contributions of the men discussed, according to the period in which they lived. Only a sufficient number of men are discussed in each epoch to give a correct picture of the trends …
The Effects Of Vitamins "A" & "D" Deficient Diets On Crayfish, Joseph Hale
The Effects Of Vitamins "A" & "D" Deficient Diets On Crayfish, Joseph Hale
Masters Theses & Specialist Projects
The literature on vitamins shows that the greater number of the studies made of vitamin "A" and "D" deficient diets have been confined to their efforts on the vertebrates. Only a few controlled experiments have been conducted to determine the effects of vitamin "A" and "D" deficient diets on the invertebrates.
The purpose of this investigation was to determine the effects of vitamin "A" and "D" deficient diets on crayfish.
Seasonal Variation Of The Pigment Content Of Acer Saccharum & Tilia Americana, James Major
Seasonal Variation Of The Pigment Content Of Acer Saccharum & Tilia Americana, James Major
Masters Theses & Specialist Projects
Leaves of the sugar maple and the American linden were selected. Since it was impossible to control environmental factors in any way, trees growing in close proximity were used. A sugar maple and an American linden growing near the entrance to the circular drive between Ogden Hall and Snell Hall on the campus of Western Kentucky State Teachers College, Bowling Green, Kentucky, fulfilled the above conditions.
The Reptiles Of Cherokee County, Kansas, Myron Alec Hurd
The Reptiles Of Cherokee County, Kansas, Myron Alec Hurd
Electronic Theses & Dissertations
Cherokee County has an area of 585 square miles. The greater part is covered with hydrophytes and mesophytes, but there are some Xerophytic areas. A large part of its area is covered with typical prairie grassland. Thickets of plum, sumac, persimmon, hawthorne, blackberry, and buck brush occur in pastures and wastelands. Along the streams may be found the elm-ask-oak assocations and other plants. Along the embankments may be found blackberry, sumac, and wild rose. Surrounding the ponds and marsh areas are rushes, reeds, button willows, and willows.
The mean annual temperature is 56 degrees fahrenheit. The three summer months average …