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Articles 35911 - 35940 of 36375
Full-Text Articles in Entire DC Network
Parker River: A National Wildlife Refuge, Rachel Carson
Parker River: A National Wildlife Refuge, Rachel Carson
United States Fish and Wildlife Service: Publications
The Parker River National Wildlife Refuge is New England's most important contribution to the national effort to save the waterfowl of North America. Many million Americans have a direct stake in the success of this effort: the 2,000,00o waterfowl hunters, the millions who find recreation and esthetic pleasure in observing and photographing the birds, and all those, whom there is no way of counting, who understand the value of preserving wildlife as part of America's natural heritage.
During the several generations in which the United States has been converted from a land preeminently wild and unsettled into an industrial and …
Index To Volume Xv, Number 1, A. C. Fox, M. L. Hanson
Index To Volume Xv, Number 1, A. C. Fox, M. L. Hanson
Nebraska Bird Review
Adams County, 19
Agate, Nebraska, 24
Ager, James: The Snowy Owl in Kearney County, 18
Allen, Robert P., 22
Anderson, Dana: Waxwings at Columbus, Platte County, 16
Baldpate, 33
Benckeser, Harold R.: Notes on Wintering Birds in Keith County, 14; Occurrence of Gyrfalcon in Keith County, 18
. . .
Witschy, Mrs. Rey: Field Day Notes from Scottsbluff, Scotts Bluff County, 20
Woodpecker: Downy, 19, 20, 21, 33; Eastern Hairy, 14; Hairy, 19, 20, 21; Northern Downy, 14; Red-bellied, 19, 21; Red-headed, 20, 21, 33
Wren: Common Rock, 33; House, 21, 23, 24; Western House, 20, 33
Yellow-legs, 20; Greater, …
Developing Rapid-Feathering Chickens, I. L. Williams, H. L. Wiegers
Developing Rapid-Feathering Chickens, I. L. Williams, H. L. Wiegers
Nebraska Agricultural Experiment Station: Historical Circulars
The object of this circular is to acquaint the poultry producer, hatchery operator, or any other person endeavoring to develop improved strains of chickens with a satisfactory method for eliminating slow-feathering individuals from his flock.
Life History Studies Of The Mouse, Peromyscus Truei Nevadensis, Lowell S. Miller
Life History Studies Of The Mouse, Peromyscus Truei Nevadensis, Lowell S. Miller
Theses and Dissertations
Peromyscus truel's a fairly common inhabitant of the upper sonaranlife zone of the Western States. It is an excellent laboratory anlmal with the limitation that captivity must be accompanied by forced activlty, in order to keep the animals within the limits of normal activity. This mouse is polyestrous and breeds from early spring to late fall. Observations have shown pregnancy in late September and in early February. It is the writer's belief that ovulation in the ovary occurs only when copulation has taken lace, because corpora lutea has only been found in pregnant or lactating females. The evidence is scanty …
A Seasonal Study Of Food Of Some Birds Of The Wasatch Chaparral, Herbert H. Frost
A Seasonal Study Of Food Of Some Birds Of The Wasatch Chaparral, Herbert H. Frost
Theses and Dissertations
A seasonal change occurred in the type of food consumed by the birds studied. Plant food was more important in the winter than in the summer. Animal food, except in one species, was found to be more important during the summer months. The most important plant foods determined by frequency and listed in order of their abundance were: Helianthus annuus, Celtis sp., Quercus sp., Polygonum convolvulus, Amaranthus blitoides, Chenopodium album, and Amaranthus graecizans. The most important animal foods based on occurance in stomachs examined were: Coleoptera, Hymenoptera, Lepidoptera larvae, Orthoptera, Undetermined larvae, Diptera, Homoptera, Coleoptera larvae, Araneae, and Hemiptera. Seventeen …
A Study Of A Heron Nesting Colony, Linden J. Leatham
A Study Of A Heron Nesting Colony, Linden J. Leatham
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Herons are well known because of their gregarious nesting habits. Like many others of the lower orders of birds they nest together in pure or mixed colonies of many different combinations and under diverse living conditions. The population of different colonies may vary from a few pairs to many thousands of pairs depending upon the nature and extent of the breeding area, the food supply available and the protection afforded either by natural or artificial means.
In Utah and adjacent areas of bordering states, many types of heron associations have been studied and reported by ornithological workers. Breeding colonies of …
Mammals Of Utah County, James W. Bee
Mammals Of Utah County, James W. Bee
Student Works
Based on the premises that an accurate determination and description of the mammals of Utah County is a prerequisite for subsequent research in ecology, geographic distribution and evolutionary taxonomy, this thesis is submitted. While it is essentially taxonomic, there are included related subjects to permit a more thorough interpretation of the subject as a whole.
Summarizing, the objectives are:
- a. To list and key the known mammals of Utah County with descriptions and measurements.
- b. To ascertain their geographic range within the county.
- c. To present significant ecological and geological data for the proper appreciation of the problems of evolutionary …
Kentucky Warbler (Vol. 23, No. 2), Kentucky Library Research Collections
Kentucky Warbler (Vol. 23, No. 2), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Block And Bridle Annual 1947
Block and Bridle Annual (1933–2021)
After being inactive for three years because of the War, the Nebraska chapter of Block and Bridle was reactivated on April 22, 1946.
Ec1549 External Parasites Of Chickens And Ddt, Ephriam Hixson, Martin H. Muma
Ec1549 External Parasites Of Chickens And Ddt, Ephriam Hixson, Martin H. Muma
University of Nebraska-Lincoln Extension: Historical Materials
Extension circular 1549 discusses external parasites of chickens and DDT.
Trout Foods In Gilmore Valley Creek, Winona County, Minnesota, L. George
Trout Foods In Gilmore Valley Creek, Winona County, Minnesota, L. George
Journal of the Minnesota Academy of Science
No abstract provided.
Economic Importance Of The Arkansas Deer Herd, Roy K. Wood
Economic Importance Of The Arkansas Deer Herd, Roy K. Wood
Journal of the Arkansas Academy of Science
No abstract provided.
Notes On The Behavior Of A Coral Snake In Captivity, Cyril E. Abbott
Notes On The Behavior Of A Coral Snake In Captivity, Cyril E. Abbott
Journal of the Arkansas Academy of Science
No abstract provided.
Notes On The Herpetology Of Clay And Greene Counties, Arkansas, Malcolm V. Parker
Notes On The Herpetology Of Clay And Greene Counties, Arkansas, Malcolm V. Parker
Journal of the Arkansas Academy of Science
No abstract provided.
Kentucky Warbler (Vol. 23, No. 1), Kentucky Library Research Collections
Kentucky Warbler (Vol. 23, No. 1), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
A Survey Of Intestinal Protozoa At The Stockton State Hospital : Stockton, California, Lawrence Melvin Gholz
A Survey Of Intestinal Protozoa At The Stockton State Hospital : Stockton, California, Lawrence Melvin Gholz
University of the Pacific Theses and Dissertations
During the past months much has been published in periodicals, especially those of a pictorial nature, which discredits institutions established for the care of' the mentally ill throughout the nation. Many articles have been presented which show an intelligent approach, but the majority of these treatments are by those who are basing too much on a very narrow experience. For example, one news magazine recently printed a picture of a mental patient in institutional garb sitting on a bench in one of the poses most characteristic of a catatonic. The caption of the picture seemed to ignore this significant fact …
Nebraska Bird Review (January-June 1947) 15(1), Whole Issue
Nebraska Bird Review (January-June 1947) 15(1), Whole Issue
Nebraska Bird Review
Contents
Wintering Waterfowl 1946-1947. By John H. Wampole ... 1
Branta canadensis in Nebraska. By R. Allyn Moser ... 5
Notes on the Nesting of the Blue Grosbeak. By Mrs. Archie Middleton ... 8
Notes on Birds in Nebraska National Forest, Bessey Division. By Carl E. Smith ... 11
General Notes ... 14
Minutes of the Forty-sixth Annual Meeting of the Nebraska Ornithologists' Union ... 26
Report of the Forty-third Annual Field Day of the Nebraska Ornithologists' Union ... 32
News and Comment ... 34
Reviews ... 36
Some Microtechnical Experiments And Recommendations Of New Prestaining Techniques, Edward D. Wood
Some Microtechnical Experiments And Recommendations Of New Prestaining Techniques, Edward D. Wood
University of the Pacific Theses and Dissertations
The preparation and staining of biological structures for microscopic examination is of extreme importance to the science of biology since almost all phases of biological advance are, at least to some degree, dependent upon microtechnical methods. Nevertheless, research workers and students of biological science are sooner or later impressed with the inadequacy of many of the microtechnical methods used by them and their colleagues. In the field of microtechnique there is difficulty in finding standardized methods which will uniformly bring optimum results. Throughout most procedures there seem to be variables over which no definite controls have been established. Microtechniques have, …
Contributions To The Study On Helminth Fauna Of Dillon Beach, Francis C. Gale
Contributions To The Study On Helminth Fauna Of Dillon Beach, Francis C. Gale
University of the Pacific Theses and Dissertations
Studies on trematodes of marine organisms of the Pacific Coast have been of a scattered and fragmentary nature. J. Stafford (1904) collected and described a number of trematodes from fishes of the north Pacific, but, in his historical survey, Manter (1926) fails to mention specifically any studies covering the waters south of Canada. More recently, in the United States, several contributions to the field have been made by Dr. John E. Guberlet at the University of Washington and at the College of the Pacific by Dr. Alden Noble, under whose guidance this study was made. James Park (1937) revised the …
The Nebraska Egg Cooler, I. L. Williams, F. E. Mussehl
The Nebraska Egg Cooler, I. L. Williams, F. E. Mussehl
Nebraska Agricultural Experiment Station: Historical Circulars
Every producer knows that heat is harmful to the quality of eggs, and that the first step in holding fine egg quality is prompt removal of the animal heat. The Nebraska egg cooler has been developed for this purpose. Construction costs are moderate, and repeated observations demonstrate the effectiveness of the principle. Its basic factor is the temperature-reducing effect of cool, humid air passing over the eggs, as soon as possible after they are gathered.
The Effects Of Estrogens On The Thyroid & Adrenal Glands Of The Male Turtle, Jeanne Frances Genrich
The Effects Of Estrogens On The Thyroid & Adrenal Glands Of The Male Turtle, Jeanne Frances Genrich
Bachelors’ Theses
Up to the present time there appears to have been very little research done on the thyroid or adrenal glands of the turtle. This seems to be especially true in respect to the effects of estrogens on these two glands. However, some work has been reported on other members of the reptilian family; particularly garter snakes, and more recently, the lizard.
Kentucky Warbler (Vol. 22, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 22, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Pig Typhus (Salmonellosis Suis), L. Van Es
Pig Typhus (Salmonellosis Suis), L. Van Es
Nebraska Agricultural Experiment Station: Historical Research Bulletins
Salmonellosis suis or pig typhus, also designated as pig typhoid, infectious necrotic enteritis, or "necro," is an infectious disease among young pigs. It constitutes a major factor in the mortality of juvenile swine, and as such must be regarded as a more or less perennial hazard in swine production. Infectious necrotic enteritis caused by Salmonella suipestifer is the subject of the present publication.
Vitamins For Poultry, F. E. Mussehl, C. W. Ackerson
Vitamins For Poultry, F. E. Mussehl, C. W. Ackerson
Nebraska Agricultural Experiment Station: Historical Circulars
Vitamins are chemical substances essential for the maintenance of life, growth, and reproduction. Their effects are out of proportion to the relatively small amounts required. Fortunately, most of these essentials are widely distributed in nature, and an adequate ration can nearly always be provided by using logical combinations of common feedstuffs. Under certain conditions, however, the use of vitamin-containing concentrates may be desirable. In planning practical rations, it should be recognized that the plant leaf is the source of most vitamins. Milk and meat products make important vitamin contributions to the diet in addition to their proteins and minerals. Direct …
Kentucky Warbler (Vol. 22, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 22, No. 3), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Nebraska Bird Review (July-December 1946) 14(2), Whole Issue.
Nebraska Bird Review (July-December 1946) 14(2), Whole Issue.
Nebraska Bird Review
Contents
Notes on the breeding and nesting of the Long-billed Curlew
Levi L. Mohler ........................................................................... 31
Seasonal Relationships of Bobwhite Quail to Woody Vegetation in Nebraska........................................................................... David Damon 34
N. O. U. Cooperative Bird Migration and Occurrence List for First Half of 1946 ......................................... 36
General Notes ...................................................... 43
News and Comments.................................. 48
Membership Roll of the Nebraska Ornithologists' Union............................. 49
List of Subscribers to the Nebraska Bird Review............................. 53
Current Exchanges ............................. 54
The Utilization Of Food Elements By Growing Chicks. Xi. A Comparison Of Ground Wheat And Ground Rye In Rations For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl
The Utilization Of Food Elements By Growing Chicks. Xi. A Comparison Of Ground Wheat And Ground Rye In Rations For Growing Chicks, C. W. Ackerson, W. E. Ham, F. E. Mussehl
Nebraska Agricultural Experiment Station: Historical Research Bulletins
1. The effect of replacing the shorts and bran of a standard ration by ground wheat or ground rye was studied with two lots of newly hatched chicks. 2. Comparisons were made on the basis of equal intakes of dry matter and nitrogen by all chicks. 3. The wheat-fed lot made a significantly greater gain than the rye-fed lot. 4. Several cases of curled-toe paralysis occurred in the two lots, and a tendency to cannibalism appeared in the rye-fed lot.
A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen
A Study Of The Renal Vascular Supply In The Domestic Cat, Elizabeth Rosen
Bachelors’ Theses
Studies on the normal and abnormal vascularization of the renal vessels in the domestic cat (felis domestica) indicate the frequency of anomalies that occur, but in most of the studies it is the inferior vena cava that is most often recorded. Among the occasional references to several renal veins or arteries we have Huntington and McClure, Elmer Butler, Gaylord Bates, William Darrach, and C.H. Fortune. Yet no study seems to have been made of individuals of any particular class. A superficial observation seems to indicate a large number of cats used in the laboratory had multiple renal veins. Hence a …
A Survey Of The Native Rabbits Of Utah With Reference To Their Classification, Distribution, Life Histories And Ecology, Reuel G. Janson
A Survey Of The Native Rabbits Of Utah With Reference To Their Classification, Distribution, Life Histories And Ecology, Reuel G. Janson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Rabbits and hares, both popularly referred to as rabbits, occupy a very prominent position in the wildlife of Utah. Over much of the state, they form the most conspicuous faunal group, and between the lowest portion of the state to above timberline on the highest mountains there are very few areas entirely devoid or their presence. There is great variation, however, in their abundance, both between localities and times. In some areas, rabbit populations often attain amazingly high numbers to the delight of sportsmen and the dismay of farmers.
Kentucky Warbler (Vol. 22, No. 2), Kentucky Library Research Collections
Kentucky Warbler (Vol. 22, No. 2), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.