Digital Commons Network^™

The Bionomics Of The Culicidae Of The Dallas Area, Ottis L. Mccleskey

Field and Laboratory

Little work has been done on Texan mosquitoes. In 1922 Dyar listed 43 species from Texas, 10 of which were recorded from near Dallas. Cushing (1934) listed the mosquitoes of Brazos County. McGregor & Eads (1934) in their work on the mosquitoes of Texas, divided the State into 17 approximately equal areas. They gave a total list of 54 species, of which 19 were reported from the area that included Dallas County. Fisk & LeVan (1941) published notes on the mosquitoes of Brownsville. The State Health Department of Texas published (1944) a booklet, "The Mosquitoes of Texas", which is the …

The Sedimentation Rate Of Potato Yellow-Dwarf Virus, M. K. Brakke, L. M. Black, Ralph W. G. Wyckoff

Department of Plant Pathology: Faculty Publications

BLACK et al. (1948) have published electron micrographs of bodies believed to represent the New York variety of potato yellow-dwarf virus (Aureogenus vastans (H) Black) (Holmes 1948). The photographs showed bodies in several different extracts of infected plants of Nicotiana rustica L., but not in corresponding preparations from healthy plants. Similar bodies were found in concentrates from plants infected with the New Jersey variety of the virus (var. agalliae Black). These bodies were larger than, and of a different character from, those of plant viruses hitherto examined in the electron microscope. The present study was undertaken to obtain evidence …

Studies On The Germination, Production, And Distribution Of Johnson Grass Seed In Certain Areas Of Louisiana., Ruth Patterson Phillips

LSU Historical Dissertations and Theses

No abstract provided.

Farmer's 1950 Income Tax, Agricultural Extension Service, South Dakota State College

SDSU Extension Circulars

Every person whose gross income during the year is $600 or more MUST file a return even though no tax is due. Gross income is total income (subject to tax) before any expenses are deducted. If at least two-thirds of your gross income is from farming and your business year starts January 1, you have two choices. Either, (a) File your return and pay the tax on or before January 31, 1951; or (b) File an estimate of your tax and pay this amount by January 15, 1951, then file your return and pay any balance due by March 15, …

Notes On Megathymus, With Description Of A New Species (Lepidoptera, Rhopalocera, Megathymidae), H. A. Freeman

Field and Laboratory

No abstract provided.

The True Clovers (Trifolium) Of Texas, Joe F. Hennen

Field and Laboratory

In Texas the true clovers do not represent a group of as much economic importance as the bur clovers (Medicago) and the sweet clovers (Melilotus). Trifolium repens, however, is widely grown in lawns and pastures. The native species, especially T. amphianthum, are of some value in pastures in the eastern half of the state. According to herbarium records, true clovers are lacking in the Panhandle and Southern Plains regions of Texas, and only one species is reported from the Trans-Pecos. It is likely, however, that introduced species do grow in these sections.

The Trichoptera Or Caddis Flies Of Dallas County, Texas, Clarence C. Hall Jr.

Field and Laboratory

Major contributions to our knowledge of American Trichoptera have been made (1934-47) by H. H. Ross, Cornelius Betten, and D. G. Denning. Their investigations, while concentrated in the eastern states, included some of the central states. Betten's work (1934) has been the basis for many recent studies. We know little, however, of the distribution of this order in Texas, even though it occurs abundantly in waters of the State. Most of the records for Texas were made in 1939 by H. H. Ross. In his report (1944), he recorded seven families and thirty species from Texas, ten of which were …

Whole Issue Nebraska Bird Review (Oct 1950) 18(4)

Nebraska Bird Review

Contents

Notes on the Nesting of the Black-crowned Night Heron at the Valentine National Wildlife Refuge ....................63

Announcements ....................64

General Notes ....................65

Constitution and By-Laws of the Nebraska Ornithologists' Union ....................71

Mourning Doves ••• Photographed by Don W. Carter ....................74

Book Reviews ....................76

Twenty-Sixth annual Cooperative Spring Migration Report ....................77

Liquid-Vapor In Equilibrium In Microscopic Capillaries. I. Aqueous Systems, Leon J. Shereshefsky Howard University

Department of Chemistry Faculty Publications

No abstract provided.

Liquid-Vapor In Equilibrium In Microscopic Capillaries. I. Aqueous Systems, Leon J. Shereshefsky

Faculty Reprints

No abstract provided.

Whole Issue Nebraska Bird Review (July 1950) 18(3)

Nebraska Bird Review

Contents

Twenty-five Year Summary of Bird Migration in Nebraska, Part 3 - Ducks ................William F. Rapp, Jr .................41

The Distribution of Field Observations on Nebraska Birds During the Last Fifty Years ••• Thomas B. Thorson .................... 47

Ornithology in Nebraska Colleges and Universities Ramona E. Dreyer and William F. Rapp, Jr ....................48

Least Tern ....................Photographed by Ray S. Wycoff, Lexington, Nebraska ....................50

Minutes of the Forty-Ninth Annual Meeting of The Nebraska Ornithologists' Union ....................52

Announcements & General Notes ....................56

Book Reviews ....................60

The North Texas Species Of Plantago (Plantaginaceae), Lloyd H. Shinners

Field and Laboratory

The Plantaginaceae of Texas have been partly or wholly revised by five authors successively: Decaisne in 1852, Gray in 1878, Morris in 1900, 1901, and 1903, Poe in 1928, and Pilger in 1937. None of these revisions is very satisfactory, partly because of reliance on quite unreliable characteristics such as color of plant after drying or number of seeds, partly because of lack of knowledge of distribution patterns of Texas plants, and partly because of limited collections or because different collections were distributed under the same number. In the following synopsis, though written only for the counties of north central …

Health And Safety : A Manual For 4-H Club Members, Agricultural Extension Service, South Dakota State College

SDSU Extension Circulars

This bulletin on Health and Safety will help you see things that you can do to make your community a safer and a healthier place in which to live. You will find suggestions on activities that you as a club member can do to help improve health conditions for yourself and for your family. It will suggest activities that can be carried out by your club to make your community a healthier community for everyone living there. In addition, because the health of an individual is so closely tied up with safety measures, there will be suggestions that might help …

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, one of Utah's better trout streams, has carried more than its share of the increased fishing pressure of the past few years. Careful management of the drainage by the U.S. Forest Service has kept the Logan River free of serious water fluctuations and relatively unpolluted by silt and wastes. The only noticeable fluctuations in the stream is the annual runoff cycle which usually reaches its peak in May. This alone has contributed greatly to the ability of the river to withstand the increased fishing pressure which it has done quite well. The increase in fishing pressure can …

Microradiography With Biological Specimens, Arthur D. Wellman

Bachelors’ Theses

Microradiography is a technique in which X-rays are directed through a very thin specimen onto a fine-grained photographic film and the image examined under magnification. It has been used chiefly as a supplementary tool in industrial analysis of metal structures, and even in this field has attained prominence only within the past decade. Its usefulness is limited to fine structures (except where minute flaws or impurities are to be examined in a material), and its success is limited by the degree of clarity in the radiograph to be magnified.

Inheritance Of Certain Characters And The Linkage Relationships Of Factors On Chromosome Iv In Barley, Claude J. Jenkins

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Plant breeding and the development of new or better varieties of plants are essential parts of modern agronomy, horticulture and forestry. The basis for such improvement is a knowledge of the factors and principles of genetics.

A number of genetic studies have been made with barley in recent years. This is partly because of the commercial importance of the crop, and partly because of the many distinct heritable characters of barley plants. The cultivated species of barley offers the plant breeder and geneticist a wealth of material for genetic studies. Varieties differ in a great many readily distinguishable characters, species …

Inheritance Of Resistance To Races Of Covered Smut, Awns, And Chaff Color In A Wheat Cross, Nazar Singh Dhesi

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Wheat is the most important cereal crop in the world. It is the principal staple food in Russia, United States, China, Canada, India and a number of other countries.

Covered smut is one of the most serious disease of wheat all over the world. According to Woolman and Humphrey (82) it was known from very early times and is referred to by Theoprastus and other early Greek Roman writers.

Some Factors Which May Influence Survival Of Game Farm-Reared Pheasants After Release Into The Wild, Taylor F. Cottle

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study was undertaken in an attempt to determine some of the factors which may influence the survival of Utah game farm-reared pheasants following their release into the wild. The survival of these birds is below the desired level after they are released, as is indicated by the low percentage taken by the sportsmen during the hunting season. In recent years the return from released game farm-reared pheasants is about 7 to 8 percent.¹ Consequently, if survival rate of these birds could be increased, more birds would be available to supplement the wild stock. Also, an increase in the …

The Bunt Problem In Relation To Winter Wheat Breeding, Delmar C. Tingey

Faculty Honor Lectures

Man is forever in search of new and better crops. He has for centuries been a persistant and fairly successful plant . breeder. Ancient Chinese are credited with breeding superior varieties of rice and hybrid flowers. Indians in America produced remarkable varieties of corn, and it was not until modern corn breeders developed "hybrid corn" that they produced superior yielding varieties.

The discovery of Mendel's work on hybridization 50 years ago pointed the way to almost limitless possibilities in plant improvement through breeding. Mendel discovered that if two related individuals were hybridized, it was possible in later generations to obtain …

A New Elasmosaur From The Eagle Ford Shale Of Texas: The Elasmosaur And Its Environment, Ellis W. Shuler

Fondren Science Series

When Mr. Andy Anderson donated to Southern Methodist University the petrified skeleton of a great marine lizard found on his plantation near Cedar Hill, Texas, he said, "Write about it so common folks can understand." In view of this request, the description of this new and important specimen has been divided into two parts. Part I is a technical description of the skeleton written by S. P. Welles, Principal Museum Paleontologist, University of California (Berkeley), an authority on the elasmosaur group to which the specimen belongs. Mr. Welles completed his manuscript, Part I of Number 1 in the Fondren Science …

Vegetative Key To Texas Desmanthus (Leguminosae) And Similar Genera, B. L. Turner

Field and Laboratory

There are several genera of Mimosoideae in Texas that resemble each other, especially when only the flowers are present. Probably the plants most frequently wrongly identified in the genus Desmanthus are Acacia hirta Nutt. and A. texensis T.&G. (A. cuspidata Sehl.), followed closely by the prostrate plants of Neptunia. Other similar Texas genera are Calliandra, Hoffmanseggia, Schrankia, and Mimosa strigillosa T.&G. The following vegetative key is designed as a quick aid to place species of this complex of plants in their proper places when flowers and/or fruit are absent.

Texas Species Of Desmanthus (Legurminosae), B. L. Turner

Field and Laboratory

The Texas species of Desmanthus (nomen conservandum), as treated in the present paper, total nine, one of which has two varieties. Six of these are found almost exclusively within the state.

The Species Of Matelea (Including Gonolobus) In North Central Texas (Asclepiadaceae), Lloyd H. Shinners

Field and Laboratory

MATELEA gonocarpa (Walter) Shinners, comb. nov. Vincetoxicum gonocarpos Walt., Fl. Carol. 104. 1788. (Emend. Gray and Perry.) Gonolobus gonocarpos (Walt.) Perry, Rhodora 40: 284. 1938.

The Texas Species Of Cacalia (Compositae), Lloyd H. Shinners

Field and Laboratory

No abstract provided.

Variations In The Vertebrae And Pelvis Of Necturus, Joseph P. Harris Jr.

Field and Laboratory

In most specimens of Necturus, the nineteenth vertebra serves as the sacrum; the iliac processes of the pelvic girdle articulate with it. In a number of specimens, Vertebra XX or (less frequently) Vertebra XVIII serves as the sacrum. But not always do the two iliac processes join the same vertebra. The iliac process of the left side may join the XVIII, XIX, or XX vertebra. The converse may also occur.

Bulletin No. 338 - Nutrient Deficiencies In Utah Orchards, D. W. Thorne, F. B. Wann

UAES Bulletins

When farm products are sold, some of the essential part of the soil are also marketed. If this process is continued, the soil may be eventually impoverished to the point where it cannot support high crop yields. In addition to direct soil depletion, unbalanced soil management practices may produce soil conditions that prevent or limit the uptake of certain elements by plants even though there may be enough total supply of the elements present to last hundreds or even thousands of years.

Both processes have been going on in many Utah orchards. Sale of fruit has gradually depleted the soil. …

Whole Issue Nebraska Bird Review (April 1950) 18(2)

Nebraska Bird Review

Contents

Twenty-five Year Summary of Bird Migration in Nebraska, Part 2.....William F. Rapp, Jr. ..............23

News and Notes ..............25

Report of the Membership Committee 29

Wildfowl Sketches....C.G. Pritchard ..............30

Announcements ..............32

General Notes ..............32

Periodicals in the Nebraska Ornithologists' Union Library ..............36

Book Reviews ..............39

Rodent Populations And Activities On A Moderately Grazed Mixed Prairie Near Hays, Kansas, John L. Paulk

Master's Theses or Doctor of Nursing Practice

The purpose of this investigation was to study rodent populations on a moderately grazed mixed prairie. A working knowledge of the activities of these small mammals, has satisfied to a certain degree the curiosity of the writer. So little work has been done in this plains region that the author felt the need for such an investigation, and hoped to arouse the interest of others along similar lines.

Science And Supposition In Evolution, Geology, And Astronomy, D. A. Sommer

Stone-Campbell Books

No abstract provided.

Bulletin No. 342 - The Nutritive Content Of The Grazing Sheep's Diet On Summer And Winter Ranges Of Utah, C. Wayne Cook, Lorin E. Harris

UAES Bulletins

Approximately two million sheep graze the native ranges of Utah each year. These animals are on the range most of the year and their food supply must come from range plants as they are normally selected. The nutritive value of range forage is often borderline or deficient in essential nutrients, yet, sufficiently adequate to prevent obvious physiological disorders. These mild deficiencies may affect the productive efficiency of the animal even though no symptoms are apparent.