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Articles 3661 - 3690 of 3692
Full-Text Articles in Physical Sciences and Mathematics
Shellfish Resources Of Washington, Robert Grant Levens
Shellfish Resources Of Washington, Robert Grant Levens
Graduate Student Research Papers
This paper will explore the salt water shellfish resources of Washington State. Particular emphasis will be placed upon the Pacific and Olympia Oysters, the Dungeness Crab, the research being done at Quilcene, and the lesser varieties of shellfish, including shrimp and the hardshell species of clams. The latter includes the littleneck, butter, Manila, and geoduc clams. A major emphasis will be the commercial importance of the shellfish, but the sportsman and the expanding role of Washington as a summer recreation area will not be overlooked.
Fossils And Farmers. 2. The Ice Age, D Merrilees
Fossils And Farmers. 2. The Ice Age, D Merrilees
Journal of the Department of Agriculture, Western Australia, Series 4
What did the giant Australian marsupials of the "Ice Age" look like?
Fossil remains found by farmers could help reconstruct them, as well as giving some idea of conditions on the Australian continent at that time, says D. Merrilees, B.Sc, acting Curator of Palaeontology at the West Australian Museum.
Is Your Water Supply Safe?, D C. Mickle
Is Your Water Supply Safe?, D C. Mickle
Journal of the Department of Agriculture, Western Australia, Series 4
THERE can be no doubt in anyone's mind that the need for a clean, safe and adequate water supply is essential for the production of high quality milk and cream.
It naturally follows, that, even though every possible care has been taken in an endeavour to produce clean, germ-free milk and cream, contamination by bad water can render these efforts void.
Automatic Waterers For Day Old Chickens, P Smetana, W. Ward
Automatic Waterers For Day Old Chickens, P Smetana, W. Ward
Journal of the Department of Agriculture, Western Australia, Series 4
ONE of the most tedious and time consuming tasks on a poultry farm is the provision of water to chicks from day old up to the age of three or four weeks.
Most poultry farmers use half-gallon glass fonts with metal bases for the first few weeks, until the chicks are old enough to use the automatic watering system usually situated along one wall of the brooder house.
This cumbersome glass font system can be replaced by the cheap and easily installed automatic watering system described below. This system has already been adopted by several local poultry farmers.
Correcting Cobalt Deficiency, Laurence C. Snook
Correcting Cobalt Deficiency, Laurence C. Snook
Journal of the Department of Agriculture, Western Australia, Series 4
COBALT is essential in the food eaten by sheep and cattle. As little as one part of cobalt in 10,000,000 parts of food appears to be adequate.
But if this mere trace is missing, ruminants will waste away and die, even when the feed appears excellent In every other way.
Thirsty Cows Are Poor Milkers, S R. Dunstan
Thirsty Cows Are Poor Milkers, S R. Dunstan
Journal of the Department of Agriculture, Western Australia, Series 4
THE HOT summer weather is not far away, and now is a good time for the whole milk producer to attend to those points which will ensure that milk production is maintained at a high level during this period.
Life History Notes On The Walleye, Stizostedion Vitreum Vitreum (Mitchill) In A Turbid Water, Utah Lake, Utah, Billy B. Arnold
Life History Notes On The Walleye, Stizostedion Vitreum Vitreum (Mitchill) In A Turbid Water, Utah Lake, Utah, Billy B. Arnold
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Early in 1952, walleye fry were stocked for the first time in Utah Lake. Subsequent plants were made in 1954, 1955 and 1956. Altogether, over two million fry have been stocked.
By January, 1958, it was felt sufficient time had elapsed for the species to establish patterns of growth, reproduction, food habits and consequent relationships to the new environment. Thus, on January 1, 1958, a Federal Aid to Fisheries project, number DJ F-4-R-5, job T, was initiated. This project was entitled "investigations of Yellow Pikeperch and Channel Catfish of Utah Lake, Utah County." Although the closing date was December 31, …
Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation
Preliminary Report: Monolayer Behavior Studies, 1959, Bureau Of Reclamation
Publications (WR)
During the fall of 1959, monolayer behavior studies were made on two lakes in the southwest; Boulder Basin of Lake Mead, Nevada, and Lake Sahuaro near Phoenix, Arizona.
These studies were made to evaluate the effect of geographical and climatological conditions on movement and behavior of monolayers. The Lake Sahuaro tests also were used to provide data for design and development of improved methods of application and maintenance of a film on this lake in anticipation of full scale, evaporation-reduction tests to be performed there during the summer of I960.
The Lake Mead studies produced the following general points of …
Deferred Grazing : What It May Mean In The Mulga Region, W M. Nunn
Deferred Grazing : What It May Mean In The Mulga Region, W M. Nunn
Journal of the Department of Agriculture, Western Australia, Series 4
THE practice of deferred grazing has been written up in American textbooks and has been applied effectively to sections of the cattle range lands of the United States.
Early attempts to apply the principle in eastern Australia were not very successful, and it remained for our Departmental workers in the North-West and Kimberley Divisions to demonstrate the phenomenal results that could be obtained on grasslands in summer rainfall areas.
Wild Life In A Modern Age, Clee Francis Howard Jenkins
Wild Life In A Modern Age, Clee Francis Howard Jenkins
Journal of the Department of Agriculture, Western Australia, Series 4
THE present human population of the earth is estimated at about 2 1/2 thousand million, and reliable sources consider that this figure will be doubled by the year 2000.
Although the pessimistic forecasts of Malthus have not yet come true, it is obvious that the world's food requirements, must lead to increased exploitation of land and other primary resources, with consequent repercussions on all forms of wild life.
Feeding Pickled Wheat To Pigs, Department Of Agriculture, Western Australia
Feeding Pickled Wheat To Pigs, Department Of Agriculture, Western Australia
Journal of the Department of Agriculture, Western Australia, Series 4
INQUIRIES are frequently received from farmers asking whether it is safe to feed pickled wheat to pigs, and if so, the quantities which would be suggested.
Until very recently there was no experimental information on the safety or possible dangers of these wheat pickling agents, but feeding trials completed last year at the Animal Health and Nutrition Laboratory, Nedlands, have provided some of the answers to these questions.
Rabbit Control In 1960, C Marshall
Rabbit Control In 1960, C Marshall
Journal of the Department of Agriculture, Western Australia, Series 4
IN the year 1859, an enthusiastic sportsman in Victoria took delivery from the clipper "Lightning" of a small consignment of wild European rabbits which he joyfully released on his estate at Barwon Park, near Geelong, in order to assure himself of some rough shooting.
He was not the only rabbit importer on record—tame rabbits were brought into Australia before and after 1895 and doubtless there were other importations of the wild rabbit—but he is generally credited—or discredited—with having triggered off the rabbit plague.
Drought Feeding Of Sheep, Laurence C. Snook
Drought Feeding Of Sheep, Laurence C. Snook
Journal of the Department of Agriculture, Western Australia, Series 4
WHEN this talk on drought feeding of sheep was suggested conditions were very serious over large tracts of pastoral country.
Many stations had not received a worthwhile rain for over 12 months and it appeared that grazing animals would have to be fed if they were to survive.
Requests have been received for advice on the cheapest way to keep sheep alive. Drought feeding in any form is a gamble. There is always the risk that the stock will eventually die despite the consumption of much costly feed.
It follows that if an effort is to be made to save …
Studies In The Mulga Pastoral Zone. 1. The Grazing Of Wandarrie Grass Associations, D G. Wilcox
Studies In The Mulga Pastoral Zone. 1. The Grazing Of Wandarrie Grass Associations, D G. Wilcox
Journal of the Department of Agriculture, Western Australia, Series 4
THE establishment of the Wiluna office of the North-West Branch marked the commencement of a series of investigations into the pastures of the mulga zone.
Unlike the agricultural areas where a fund of knowledge exists on the growth habits of the pastures, the pastures of this area were completely unknown.
The preliminary investigations had to be aimed at forming an understanding of the reactions of the various plants to rain, to temperature and seasonal conditions and to grazing in an area of extremely low rainfall reliability.
Lethal Concentrations And Detoxification Time Of Toxaphene For Goldfish, Gambusia And Rainbow Trout, Gar W. Workman
Lethal Concentrations And Detoxification Time Of Toxaphene For Goldfish, Gambusia And Rainbow Trout, Gar W. Workman
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
In the past few years the Utah Fish and Game Department, as well as the fish and game departments of other states, has been spending fisheries money for fish eradication on both lakes and streams. The Utah Fish and Game Department recently suggested to the University that research be initiated on the subject of toxaphene as a fish poison. Consequently, a better insight into conditions that exist for a given water type could be developed.
A Recto-Vestibular Fistula In A Female Pig, M. M. Keith
A Recto-Vestibular Fistula In A Female Pig, M. M. Keith
Journal of the Minnesota Academy of Science
No abstract provided.
Field Techniques For Sexing And Aging Game Animals, Donald R. Thompson
Field Techniques For Sexing And Aging Game Animals, Donald R. Thompson
Nebraska Game and Parks Commission: Publications
The purpose of this booklet is to provide a ready field reference for identification, sexing and aging of common game species. It has purposely been kept in simplified form, presenting only those techniques which can commonly be applied in the field and avoiding those which would require special equipment and skills. Untrained personnel should be given demonstrations of the techniques, and thereafter this reference should serve as a reminder. It is not expected that the reference could successfully be used without such demonstration. Certain of the techniques such as cloaca! examination of waterfowl may require considerable practice by the individual. …
Growth And Reproduction Of Eupleura Caudata (Say) In The York River, Virginia, Clyde L. Mackenzie
Growth And Reproduction Of Eupleura Caudata (Say) In The York River, Virginia, Clyde L. Mackenzie
Dissertations, Theses, and Masters Projects
No abstract provided.
A Comparative Study Of Meristic Variation In The American Eel (Anguilla Rostrata) And Atlantic Anchovy (Anchoa Mitchilli), Ernest C. Ladd
A Comparative Study Of Meristic Variation In The American Eel (Anguilla Rostrata) And Atlantic Anchovy (Anchoa Mitchilli), Ernest C. Ladd
Dissertations, Theses, and Masters Projects
No abstract provided.
The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley
The Use Of Branchiostegal Rays To Determine Age Of Lake Trout Salvelinus Namaycush Walbaum, Ross Vivian Bulkley
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Any method used in aging fish must fulfill certain requirements to be satisfactory. If the method is inaccurate, naturally little reliance can be placed upon its use. If considerable study of the method and much practice are required before accurate readings can be obtained, the method will not come into widespread use. The requirements of an aging method, then are that it must be accurate and comparatively easy. The scale method for aging lake trout (Salvelinus namaycush Walbaum) unfortunately does not fulfill these requirements. It has always been difficult to tell the age of lake trout by the examination …
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Deer, William Bailey Jr., George Schildman, Phillip Agee, C. G. Pritchard
Nebraska Game and Parks Commission: Publications
IN COMMON with the experience of most states, Nebraska's deer herds were reduced to a very low level by excessive harvests in our early history. Most American big-game animals were overharvested in the early history of this nation because of commercialization. Buffalo were killed for their hides, deer for their meat. This slaughter continued as long as the hunter (or poacher) could sell his take at a profit. Modem game management and public opinion reversed this trend. Deer are on the way back all over America, and in some states the protection-complex was so strong that deer were restored to …
The Length And Age Composition Of Spot, Leiostomus Xanthurus, In The Pound Net Fishery Of Lower Chesapeake Bay, Anthony Louis Pacheco
The Length And Age Composition Of Spot, Leiostomus Xanthurus, In The Pound Net Fishery Of Lower Chesapeake Bay, Anthony Louis Pacheco
Dissertations, Theses, and Masters Projects
No abstract provided.
Range Liverstock Nutrition And Its Importance In The Intermountain Region, C. Wayne Cook
Range Liverstock Nutrition And Its Importance In The Intermountain Region, C. Wayne Cook
Faculty Honor Lectures
It has been estimated that about 728 million acres or about 76 percent of the entire land area in the West is used for grazing (Stoddard and Smith 1956). In Utah about 93 percent of the land area or 48,900,000 acres is considered range land (Reuss and Blanch 1951). Although some of this range land is forested, a large area of it can be used only for grazing. Therefore, range livestock production is an important segment of western agriculture.
Before 19'00 most of the animals in the West grazed on the range all year. However, irrigation crop production has expanded …
Age And Length Of Menhaden (Brevoortia Tyrannus) In The Waters Of Chesapeake Bay, With Comments On The Rate Of Growth, Ray T. Oglesby
Age And Length Of Menhaden (Brevoortia Tyrannus) In The Waters Of Chesapeake Bay, With Comments On The Rate Of Growth, Ray T. Oglesby
Dissertations, Theses, and Masters Projects
No abstract provided.
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The California Quail is native to the coastal and semi-arid regions of California extending north into Oregon. Two subspecies are commonly recognized. the California Quail (Lophortyx californica brunnescens Ridgway), and the Valley Quail (Lophortyx californica californica Shaw). The two forms are very similar in coloration and habits and, for the purpose of this study, no effort is made to distinguish the two.
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.
Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.
Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general …
Freshwater Sponges In Arkansas, David Causey
Freshwater Sponges In Arkansas, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
Harvest Of Wild And Stocked Fish From The Logan River Drainage, Louis S. Pechacek
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Logan River heads in the southeastern corner of Franklin County, Idaho, and runs in a south and westerly direction. It enters the state of Utah through the northern boundary in the northeast corner of Cache County. The main stream is fed by two tributary streams which head in separate directions a few miles apart. The Franklin Basin branch is the main contributing tributary while the Beaver Creek branch is nearly as large.
Spawning Grounds Of The Striped Bass Or Rock, Roccus Saxatilis (Walbaum), In Virginia, Ernest Frederick Tresselt
Spawning Grounds Of The Striped Bass Or Rock, Roccus Saxatilis (Walbaum), In Virginia, Ernest Frederick Tresselt
Dissertations, Theses, and Masters Projects
No abstract provided.