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The Mosquitoes Of Nebraska, H. Douglas Tate, Doris B. Gates

Nebraska Agricultural Experiment Station: Historical Research Bulletins

A survey of mosquitoes in Nebraska was conducted by the Nebraska Agricultural Experiment Station during 1942 and 1943. The object of the study was to determine the species, relative abundance, seasonal occurrence, and principal breeding places of mosquitoes in representative areas of the state. This report presents the results of the survey, and, in addition, some records and observations made in Nebraska by other workers during and previous to initiation of the project.

The Effect Of Salt Water On The Pituitary Gland And The Reproductive Glands Of The Male Rat, Matthew J. Kennedy

Bachelors’ Theses

In this thesis a study was made of the histology of the reproductive system of a male, buff rat.

Nutritional Status Of Some Utah Population Groups, Almeda Perry Brown

Faculty Honor Lectures

The science of nutrition is the science of life. Though man is still ignorant of the true nature of that elusive force we call life, he has learned by means of the discovered laws of nutrition how to preserve and prolong life as well as how to add to the satisfactions of living.

The emergence of the sicence of nutrition from the maze of superstition which for centuries clouded man's thinking is a fascinating story. A story, however, that arouses a feeling of regret that for so long a time man was willing to attribute to supernatural forces all phenomena …

The Fifty-Seventh Session Of The Iowa Academy Of Science, April 15, 1944, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Second Report Of The Committee On Grasshopper Research Appointed By The American Association Of Economoic Entomologists. Part 1, Work Conducted By State Agencies Of The United States., Agricultural Experiment Station, South Dakota State College

Agricultural Experiment Station Entomology Pamphlets (1940-1952)

This is the second report of the Committee on Grasshopper Research. The appointment of such a committee was first authorized at the San Francisco meeting of the American Association of Economic Entomologists in 1942 and was appointed by President Harry B. Weiss. Dr. P. N. Annand, who succeeded Dr. Weiss as president of the American Association of Economic Entomologists in 1943, requested that the entire personal of the committee appointed by Dr. Weiss continue to function for another year. The committee members agreed to do this.

A Comparative Study Of Dehydration And Infiltration, Jane C. Mahar

Bachelors’ Theses

Dehydration is the process of removing water from tissue which has been fixed and hardened. It is a necessary step for the Infiltration of paraffin. If the dehydrating agent is not a solvent of the paraffin, it is necessary to use a solvent first and then infiltrate with paraffin. Dehydration, according to Sass (1940), has some washing action besides making the material firm and, in some cases, hard and brittle. When Bouin’s fixing fluid is used, ethyl alcohol is the solvent used in removing the solution and in washing the material. Dehydrating agents which possess hygrosopic properties are those most …

Heterothallism In Schizophyllum Commune, Lois G. Wilbershide

Bachelors’ Theses

For many years, workers have been striving to arrive at definite conclusions in regard to heterothallism in a great variety of plants. Much work has been done and there are many instances where heterothallism has been established and confirmed. Yet, in regard to Schizophyllum commune, few investigators have studied this phenomenon. However, much work of a different nature has been done on Schizophyllum since 1719 when attention was first called to this fungus partly because of the peculiar split character of the gills. It has been collected, classified, and worked on since that time, but the greater share of the …

Dr. David Porter Smythe, An Early Texan Botanist, S. W. Geiser

Field and Laboratory

One of the most interesting of our botanical students of Early Texas was Dr. David Porter Smythe (or D. Port Smythe, as he was

North American Prairie, J. E. Weaver

Papers of John E. Weaver (1884–1956)

From the highlands of central Mexico across the entire United States and northward into Canada extends the great mid-continental prairie. On the east it is in contact with the deciduous forest. From this central mass the prairie extends westward beyond the Rocky Mountains across Wyoming into eastern Utah, and southwestward through northern New Mexico in to northern Arizona. The Palouse Grasslands occurred in eastern Oregon and Washington, and other parts of the far Northwest. The Pacific Prairie was found in the Great Valley of California, and the-Desert Plains Grassland still occupies much of southern Arizona and New Mexico and southwestern …

Recovery Of Midwestern Prairies From Drought, John E. Weaver

Papers of John E. Weaver (1884–1956)

The long period of desiccation, which began in 1934, finally terminated in 1940. The western portion of True Prairie was greatly decimated and a veritable mosaic of types of vegetation resulted. These ranged from well-preserved relict communities of bluestems (Andropogon) to mixed stands of grasses on nearly bared soil, but included communities of western wheat grass (Agropyron smithii) , short grasses (Bouteloua gracilis and Buchloe dactyloides) , needle grass (Stipa spartea), and prairie drop seed (Sporobolus heterolepis) . These types varied in size from a few square rods to many …

Common Distributional Pattern In Geographical Ranges Of Plant Species And The Problem Of Center Of Origin, C. W. Sharsmith

Journal of the Minnesota Academy of Science

No abstract provided.

Abstract Papers

Journal of the Minnesota Academy of Science

No abstract provided.

A New Race Of Brown-Headed Chickadee From Northern Washington, Alden H. Miller

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

Birds Of Linares And Galeana, Nuevo León, Mexico, George Miksch Sutton, Olin Sewall Pettingill Jr.

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

The Yellow-Crowned Night Heron Of Socorro Island, Mexico, A. J. Van Rossem

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

Check-List Of The Mammals Of Louisiana And Adjacent Waters, George H. Lowery Jr.

Occasional Papers of the Museum of Natural Science, Louisiana State University

No abstract provided.

Technique For Testing Consumer Preferences, With Special Reference To The Constituents Of Ice Cream, A, C.I. Bliss, E.O. Anderson, R.E. Marland

Storrs Agricultural Experiment Station

No abstract provided.

Kentucky Warbler (Vol. 19, No. 4), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

A Study Of The Respiratory System Of The Sparrow (Passer Domesticus), Ben Peter Arnowitz

Bachelors’ Theses

The respiratory mechanisms of birds, unlike that of mammals, are definitely adapted to the function of flight. Because of this added adaptation, we should expect, therefore, some morphological and perhaps even embryological, physiological, and histological differences. An example of a morphological difference between birds and mammals is the intricate system of air-sacs that are present in birds. This remarkable feature is probably the reason why birds are able to fly as they do.

In this thesis the writer has used the sparrow (Passer domesticus) for the basis of his experiments. This particular bird was chosen in preference to …

Bulletin No. 310 - The Influence Of Cropping On The Nitrogen, Phosphorus And Organic Matter Of The Soil Under Irrigation Farming, J. E. Greaves, C. T. Hirst

UAES Bulletins

Most soils contain sufficient nutrients for normal plant growth, with the exception of nitrogen, phosphorus and potassium. These elements are used by plants in the largest quantities and the amounts of these in the soil govern its productivity. Soil organic matter is of prime importance for it is the matrix which holds the nitrogen and modifies the structure, temperature, and water-holding capacity of the soil. The organic matter is the very life of the soil, for it is in and on it that bacteria work and by so doing determine the kind and speed of reactions which occur. It is …

Nitrate Production As Affected By Grain-Crop Residues On The Surface Of The Soil, T. M. Mccalla, J. C. Russel

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The purpose of this bulletin is to present the data on nitrate contents and nitrate production in tests where straw or stalk residues were left on the surface through subsurface tillage, as compared with check treatments where these residues were plowed under or were absent. Nine of these tests were at Lincoln, Nebraska, and one was at the Hastings, Nebraska, Hydrological Project. Two tests were conducted in 1939, four in 1941, and four in 1942.

Some Physical And Chemical Properties Of Wheat Starch In Relationship To The Maturity Of The Wheat, Claude W. Bice

Master's Theses or Doctor of Nursing Practice

Wheat is one of the most valuable of economic plants and is grown extensively throughout the world. Because of the unique chemical and physical properties of its gluten, wheat is superior to all other cereals for bread making. Its high starch content provides a tremendous source of energy as a food, as well as filling certain industrial starch needs, especially in textile manufacturing . The present study on properties of immature and mature wheat starches should be of inestimable worth for evaluation of damaged wheats for starch production, as well as for yielding fundamental information which may facilitate the use …

How To Reseed Utah Range Lands, A. Perry Plummer, Richard M. Hurd, C. Kenneth Pearse

Aspen Bibliography

Additional low cost forage is urgently needed by Utah's range livestock industry. Seeding of depleted tracts in accordance with recently developed methods and principles will help supply this forage and is entirely feasible. Where the value of the increased forage will repay the cost of planting, careful reseeding of selected sites is fully justified.

The important part that reseeding can play in restoring ranges to their former capacity has been demonstrated. Although satisfactory results can be obtained on many sites during average or better years, much more study is needed to insure consistent success in abnormal years and to extend …

Effects Of Rootone On Shoot And Root Growth Of The Soy Bean And The Effects Of Nutrient Salts On The Same, Thomas Pastras

Biology Honors Papers

This thesis provides background information on plant hormones and plant physiology and describes an experiment on the effects of growth hormone on the root and shoot of the soy bean plant.

Species And Parasitic Diseases Of The Genus Viola In Milwaukee County, Ruth E. Gass

Bachelors’ Theses

This study was conducted to determine the species of Viola and parasitic diseases of the genus Viola. The specimens were collected in Wauwatosa, located in Milwaukee County; a few plants were collected in Jefferson County.

Population Size And Longevity Of Males And Females In Drosophila, Kathleen M. Murphy

Bachelors’ Theses

The two ever present instincts of man are self-preservation and the propagation of the race. At the beginning of one’s life this urge to survive is wholly unconscious but later on this will to live Is supplimented within the individual as a definite conscious search for longevity. Awareness to this inherent and universal desire to live is evidenced by the sought after services of the physician or doctor; the presence of civil law with the law courts and many other protective establishments. This conscious awareness to the possibilities, no matter how slight, of extending or at least maintaining life has …

Studies Of The Excretory System Of The Passer Domesticus, James Julian Stout

Bachelors’ Theses

In past years and in recent years most animals have been made a subject of study. However, very little or no research has been made on the most common of all birds, the English Sparrow. This thesis will endeavor to take up the study of the excretory system of the Passer Domesticus. In most animals the excretory organs are the kidneys and the skin, which pass of nitrogenous and other waste matters from the body. I will take up the main organ of this system the kidney at this time, with a histological study of the ureter, and leave the …

A Study Of The Digestive System In The Sparrow (Passer Domesticus), Henry Joseph Wisniewski

Bachelors’ Theses

The digestive tube proper of the Sparrow beings with the Oesophagus. This is a soft tubular organ which serves to convey food rapidly from the pharynx to the stomach. It extends along the median ventral margin of the neck lying dorsal to or to one side of the trachea. Posteriorly, at the base of the neck and shortly in front of the sternum it broadens slightly and gives rise to a dilated region of the oesophagus, namely the Crop, "whose secretion serves to moisten the food or even to initiate digestion." In larger birds as in the pigeon, the crop …

The Urogenital System Of The Male And Female English Sparrow, Passer Domesticus, Peter Paul Wisniewski

Bachelors’ Theses

The testes is a pair of oval organs posterior to the lungs and anterior to the kidneys. Each testes is attached by a mesentery to the anterior end of the kidney. An adrenal gland is located at the anterior portion of each testes. The vasa deferentia are slender convoluted tubules. Each arises from the median edge of the testes passes cauded along the ventral surface of the kidney, paralleling the ureter and enlarging slightly at the distal end to form a small seminal vesicle, which enters the urogenital region of the cloaca by a papilla. The male urodaeum is smaller …

An Electrophoretic Determinatin Of The Properties Of Methacrol M.E. By The Use Of A Capillary Cross-Arm "U" Tube, Richard Reiland Bains

Bachelors’ Theses

this research was undertaken primarily to discover the use of a capillary cross-arm "U" tube in the determi­nation of the electrophoretic and other electrical proper­ ties of a plastic emulsion.

The primary objective was to determine the isoelectric point of the emulsion and also the optimum pH or electro-endosmotic motion.

The secondary and distant objective was to note when, how, and it any coherent plating on the electrodes took place.