Digital Commons Network^™

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 …

Congenital Diaphragmatic Hernia In The Right Central Part Of The Semi-Lunar Tendon Of The Cat, Alice Ferguson

Field and Laboratory

The purpose of this paper is to contribute additional in­ formation concerning the site of congenital diaphragmatic hernia in the domestic cat and the extent of displacement of the abdominal contents so that the ontogeny of this anomaly may be better understood.

The Density Of Matter, John D. Boon

Field and Laboratory

Density is the amount of matter in a unit volume of space. In this paper it will be expressed in grams per cubic centimeter. As a rule we think of density as being applicable to the things we deal with in everyday life, forgetting that it is an important characteristic of matter, from atomic nucleus to the stellar universe. To a great extent the behavior of matter may be explained by a knowledge of density.

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

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.

The Travels And Botanical Collections Of Dr. Melines Conkling Leavenworth, Rogers Mcvaugh

Field and Laboratory

The pages of the classic Flora of North America, (1838- 1843), by John Torrey and Asa Gray, contain approximately 200 references to plants from Alabama, Georgia, Louisiana, Arkansas, and Texas, collected by a certain Dr. Leavenworth….He was indeed the author of a number of botanical papers, but the promise of his early years was never fulfilled. His work is of interest to modern students chiefly because of the material from the then inaccessible "West" and "Southwest", which he contributed to Torrey. He spent about five years at frontier posts in western Louisiana and what is now southeastern Oklahoma, and more …

Brief Short-Title List Of Published Works On The History Of Science, Samuel W. Geiser, Bessie T. Geiser

Field and Laboratory

The present brief list was compiled primarily for the use of students in a course on the History of Science offered by the senior author at Southern Methodist University. It is far from complete: scholars conversant with the field will note omission of works they consider of primary importance, and the inclusion of others, to them of secondary interest. We are not sure that in every case our omissions and inclusions are fully defensible; but it is believed that this bibliography includes a very large proportion of the best works on the subject in hand.

Possibilities Of Managing Aspen, Paul Zehngraff

Aspen Bibliography

The management of aspen or popple (Populus tremuloides) has received little attention in the past, largely because of the former abundant supply of other and more valuable tree species in the Lake States. Be- cause of a rapidly expanding market for all forest products during the past decade, particularly during the war, the attention and ingenuity of industry have turned toward the use of aspen. As a consequence, aspen has now become one of the important pulpwood species in the Lake States, and is used for many other products. That it will retain its place for some time to come …

Aspen Availability And Supply, Clarence D. Chase

Aspen Bibliography

A knowledge of the total and available supply of aspen is basic to a study of the aspen situation. Hence, this paper aims to show the relative position of aspen²/ as a commercial forest type in the Lake States region, both currently and potentially. The data on areas, volumes, and growth are taken from the Forest Survey made in 1933-37, brought up to January 1, 1945, by office calculations including drain studies. Areas by site quality, allowable cut calculations, and volumes of timber available (1945 to I960) are the best estimates that can be made at this time.

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 …

Viola Striata Aiton, William M. Bailey, Julius R. Swayne

Specimens by Name

No abstract provided.

Hormones Of The Vertebrates And Their Influence On The Growth And Development Of Invertebrates, M. G. Heckman

Biology Honors Papers

This 14 page thesis discusses the nature of the hormone thyroxine, the structure and physiological behavior of paramecium and describes an experiment on the effect of vertebrate hormones with various invertebrates.

Southeastern South Dakota Farm Record Summary 1946 Fourth Annual Report, C. R. Hoglund

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

This is the fourth annual report of the farm record study started by the Experiment Station in 1943. Farm record cooperators are located in two areas of the state; namely, the Southeastern and North Central Areas. A summary of the results of the North Central area are included in a separate pamphlet.

Crop, Livestock, & Miscellaneous Statistics For South Dakota Agriculture, C. R. Hoglund

Agricultural Experiment Station Agricultural Economics Pamphlets (1941-1991)

The purpose of this pamphlet is to bring together into a single report, the most recent data on crops and livestock, land use, number and size of farms, tenure, in come and other pertinent information which has a direct bearing on South Dakota Agriculture. This report contains a great deal of material which has been summarized from the recent 1945 U.S. Census. Much additional information has been obtained from the South Dakota Crop and Livestock Reporting Service.

Viola Triloba Schwein., William M. Bailey, Julius R. Swayne

Specimens by Name

No abstract provided.

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 …

Study Of Viable Seeds In Surface Soil From Various Habitats In Ellis County, Kansas, Robert D. Lippert

Master's Theses or Doctor of Nursing Practice

It is the purpose of this study to determine what species of plants emerge from samples of surface soil taken from various habitats after several years of favorable growing conditions.

Pastures Of Western Kansas In Relation To Intensity Of Utilization In Past Years, Gerald W. Tomanek

Master's Theses or Doctor of Nursing Practice

Short grass pastures vary in their ability to produce forage for livestock consumption. One of the reasons for this difference is a variation in the degree of utilization in past years. Forage production of short grass ranges has been reduced to about one-half after only a few decades of improper grazing; therefore the problem of proper utilization is becoming more important every year (Forest Service, 1936). When the settlers first came to western Kansas they found an almost complete cover of native vegetation and during the first few years only a small portion of the range land was cultivated. With …

Viola Sororia Willd., William M. Bailey, Julius R. Swayne

Specimens by Name

No abstract provided.

Hybanthus Concolor (T.F. Forst.) Spreng., William M. Bailey, Julius R. Swayne

Specimens by Name

No abstract provided.

Bulletin No. 5: The Connecticut Arboretum, Richard H. Goodwin

Bulletins

No abstract provided.

North And South Dakota Horticulture, May 1947, North And South Dakota State Horticultural Societies

North and South Dakota Horticulture

Volume 20, Number 5

The Magnolia Warbler, O.A. Stevens
Newslants, H.A. Graves
Garden Notes, W.E.H Porter
Manitoba News Letter, W.R. Leslie
Garden Club Gleanings, Mrs. G.M. Jorgensen
Our State Tree, H.R. Woodward
Book Reviews, Mrs. M. Harter
Book Review, Mrs. H.N. Dybvig
Iris Notes, Rev. E.L. Jackson
Blizzard Belt Gardener, L.A. Yeager
Dakota's Wild Flowers, Dr. G.F. Will
Beekeeping Notes, B.J. Ginsbach
Fruit and Vegetable Notes, F.X. Wallner
Secretary's Corner, W.A. Simmons

Plan Of Development For Valley Gravity Project, Julius A. Krug, Michael W. Straus, Wesley R. Nelson

Lower Rio Grande Valley Curated Material

"The Valley Gravity Project Plan has been formulated to furnish an adequate and dependable irrigation water supply for fertile and productive area in the Lower Rio Grande Valley, Texas, It would also provide drainage works, which would remove the threat of destruction of the economy of the area due to effects of a high water table and salt accumulations. The project works would permit generation of the maximum practicable amount of electrical energy which otherwise would be required to operate irrigation pumping plants. Other incidental benefits include fish and wildlife conservation, recreation and flood control."

Project report no. 5-0619-0

Aspen Properties And Uses, Zigmond A. Zasada

Aspen Bibliography

Because of the large demand for lumber during the last 10 years, and particularly during the war period, aspen has entered many new fields of use. At present there is widespread interest in the possibilities of building new industries and extending the life of old ones by increased use of aspen. Many people are interested in becoming familiar with this wood. This report has been prepared to give general information on the properties and present uses of aspen and also to help in correcting some of the existing erroneous ideas about this wood.

Ec1507 Revised 1947 New Insecticides For The Control Of Grasshoppers, Ephriam Hixson

University of Nebraska-Lincoln Extension: Historical Materials

Extension circular 1507 Revised 1947 discusses new insecticides for the control of grasshoppers.

An Adaptation Of The Feulgen Reaction For The Staining Of The Salivary Gland Chromosomes Of Drosophila, Herman C. Inlow

Bachelors’ Theses

The discovering of the genetic value of Drosophila salivary gland chromosomes by Painter, Heitz, and Bauer in 1934 posed a problem of technique to the microtomist that is still being improved upon and widened. The staining of these chromosomes fer better study and to determine their properties, both chemical and physical, has been the object of intense research. This paper is the result of my work in connection with this subject.

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 …

The Measurement Of Agricultural Production In The Utah From 1920 To 1946, Owen L. Brough Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

As agricultural leaders become increasingly aware of the economics involved in the production and marketing of agricultural products, there develops an increased need for more accurate and more complete methods of measuring agricultural production. This need is not only for the satisfactory measurement of the physical production of a given crop, but is also for a unit of measurement that will make possible a comparison of the production of individual enterprises and groups of enterprises for a given year and from year to year. Because the production of many crops, and livestock and livestock products are customarily measured according to …

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 …

A Taxonomic Study Of The Adult Mosquitoes Of Utah County With Notes On The Biology And Distribution Of The More Common Species 1946-1947, Cluff E. Hopla

Theses and Dissertations

In Utah County, information has been lacking concerning the taxonomy and distribution of mosquitoes. With the knowledge of this condition, it is felt that information can be presented which will be of value both to the scienoe of Entomology and the area concerned.