Digital Commons Network^™

Aspen Lumber For Building Purposes, Louis W. Rees

Aspen Bibliography

Recent shortages of lumber for building purposes make it desirable to seek out all possible supplies of additional lumber. Aspen, according to a study made in northern Minnesota during 1944, ¹/ may be a source of lumber largely untapped. The results of that study are the main basis of this paper.

A Preliminary Study Of A Physical Basis Of Bird Navigation, Henry L. Yeagley

Papers in Ornithology

The bird navigation theory as presented implies an organ or organs in the bird's physiology which are sensitive to the effect of its motion through the vertical component of the earth's magnetic field and to the effort exerted to overcome the coriolis force, due to the earth's rotation. Both these influences involve a set of lines which together form a navigational gridwork. By correlating its instantaneous land speed with the two above effects, a bird can fly to its home which is a unique point in this gridwork, or to related companion points existing in the gridwork at positions other …

Medical Arts & Sciences, Volume 1, Number 3, October 1947

Medical Arts and Sciences: A Scientific Journal of the College of Medical Evangelists

No abstract provided.

Cerebral Anoxia And Its Residuals: Pt. Iii. The Structural Changes, Cyril B. Courville

Medical Arts and Sciences: A Scientific Journal of the College of Medical Evangelists

No abstract provided.

Aspen For Core Stock, Arlie W. Toole

Aspen Bibliography

During recent years, aspen has been used in the Lake States region for a number of products. The war years in particular showed a marked increase in the use of aspen for pulpwood, box lumber, and many other wood products. The annual cut of aspen lumber in the region increased from approximately 67 million board feet in 1941 to 152 million board feet in 1946. In spite of this increased use, aspen still remains the only major tree species in the Lake States in which annual growth exceeds annual drain. It represents the major forest resource in this region that …

The Digenetic Trematodes Of Marine Fishes Of Tortugas, Florida, Harold W. Manter

Harold W. Manter Laboratory of Parasitology: Library Materials

189 species of digenetic trematodes are reported from teleost fishes of the region of Tortugas, Florida. Among these are recognized: 44 new species, 9 new genera, 44 new combinations, 14 new synonyms, and 51 new host records. Several genera and species are considered synonyms of those previously named.

Of 237 species (approximately 2,039 specimens) of teleost fishes examined, 182 species or 76.8% were parasitized by adult, digenetic trematodes. Most of the host species harbored from one to three species of trematodes; 79 (or 43.4% of the 182) had a single species of trematode. Two fishes, however, were each susceptible to …

An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin

Master's Theses or Doctor of Nursing Practice

Biology is the science of life and therefore deserves every consideration in the high school curriculum. The world today is making an extensive and intelligent use of biology in solving problems of personal and social significance. Scientists have discovered that certain phases of the subject are more important to man's welfare than others. For this reason it is essential that biology be presented to our high school students not as isolated facts, but in relation to the problem of living. Through this science of living things, the student can gain a healthy respect for facts and for conclusions based on …

Mechanical Properties Of Aspen, R. P. A. Johnson

Aspen Bibliography

The clear wood of aspen has inherent properties of merit. Several of these properties are familiar to a large proportion of the general public, for some of the common types of matches are made of this wood. The requirements of wood for matches are exacting in that the wood must combine straightness of grain, ease of splitting, ease of working, and toughness To meet such rigid requirements, a wood must be suitable for other uses as well. The fact that aspen is not used more widely for other purposes lies not in the wood itself but in other factors, such …

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.

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 …

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.

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.

A Method Of Measuring Vigor Of Range Grasses, J. E. Weaver

Department of Agronomy and Horticulture: Faculty Publications

After several years of intensive study of midwestern prairies, their degeneration under grazing was given careful consideration (Weaver and Fitzpatrick, '32, '34; Weaver and Hansen, '41). It was ascertained that the intelligent use or careless abuse of these grasslands had resulted in pastures and ranges which could logically be grouped into four classes. These were excellent, good, medium, and poor. The first consisted almost entirely of climax grasses and an abundance of nutritious forbs which, as is almost universally found, were of the highest grazing value (Bews, '29: 298). In good pastures many of these persisted, but there was a …

Window Fashions, Mabel E. Bryan

SDSU Extension Circulars

Windows let sunshine and beauty into rooms, just as the eyes let light and joy into the soul. Windows should be allowed to serve their purpose and not be overloaded with curtains and draperies. They should be decorated to create a restful and cheerful atmosphere within the room. The best treatment depends on the size, shape, and arrangement of the windows, as well as the general characteristic of the room and its surroundings.

The Vitamin A And Carotene Content Of Nebraska Butter, I. L. Hathaway, H. P. Davis

Nebraska Agricultural Experiment Station: Historical Research Bulletins

The vitamin-A, carotene, fat and moisture concentrations of Nebraska creamery butter were determined at monthly intervals for 25 months. Samples were obtained from 14 creameries located throughout the state. Their vitamin-A and carotene determinations were made with the aid of a spectrophotometer, and their fat and moisture analyses were determined by the A.O.A.C. methods. From a comparison of these data with the results of investigations in other states it was concluded that Nebraska butter was at least equal in vitamin-A value to average United States butter.

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

The Kentucky Warbler

No abstract provided.

Greenleaf Cilley Nealley (1846-1896), Texan Botanist, S. W. Geiser

Field and Laboratory

In the July, 1946, issue of FIELD & LABORATORY, Dr. Rogers McVaugh has published an account of the travels and plant-collecting activities of G. C. Nealley, little-known botanist of Texas. While McVaugh's paper was in its final revision, and passing through the press, I endeavored to bring into shape for publication a biographical footnote of him from my accumulated notes of several years. The task offered difficulties; many gaps of information could not be filled without wide correspondence; the result was that the note had to be deferred to the present.

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 …

Agricultural Research In South Dakota: Sixtieth Annual Station Report, July 1, 1946 - June 30, 1947, South Dakota State College Of Agriculture And Mechanic Arts

Agricultural Experiment Station and Research Farm Annual Reports

No abstract provided.

Studies On Genetics And Classification Of Four Forms Of Pellicularia Filamentosa (Pat.) Rogers., Beatrice Barbara Exner

LSU Historical Dissertations and Theses

No abstract provided.

Taxonomic Studies Of Louisiana Aphids., Henry Bruce Boudreaux

LSU Historical Dissertations and Theses

No abstract provided.

Farm Fishponds, Verne E. Davison

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

An important part of soil and moisture conservation is making the best use of every acre on the farm. Where a suitable site for a farm pond exists, no better use can be made of such land than to develop it for the production of fish for the farm family. The recreation the pond affords adds much to the pleasure of rural life.

Thousands of farms have good pond sites. Properly developed and managed ponds may provide both food and pleasure to more than a million farm people.

This bulletin tells how to have good ponds. It explains how to …

Bake Bread Successfully, Anna M. Wilson

SDSU Extension Circulars

During the latter spring and summer months of 1946 the United States was able to send more wheat abroad to starving people because we use 80 percent extraction flour instead of the customary 72 percent. Using 80 percent extraction flour taught us that degree of refinement does make a difference in the way flour must be handled in making yeast bread. In this circular we shall learn why wheat means so much to a world harassed with famine and how we can make better use of wheat by understanding the principals involved in breadmaking.

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.

A Supplementary Gazetteer Of Texas, 1875-1895, Bessie Teeple Geiser

Field and Laboratory

(With a Foreword by Dr. L. H. Shinners) The present list of early towns of Texas, in existence during the years 1875 to 1895, is supplementary to the extended one given in the current issue of The Texas Almanac. It is designed particularly for the use of botanical taxonomists, who from time to time encounter on herbarium sheets localities which cannot be found in any of the standard gazetteers…

Jacob Boll's Collecting In The Texas Permian: A Note And A Correction, S. W. Geiser

Field and Laboratory

Dr. A. S. Romer in a recent note has written on collecting vertebrate fossils in the Texas "Red Beds." In his paper, Romer states that the year 1946 is the seventy-fifth anniversary of the beginning of vertebrate-fossil collecting in the Permian of north-central Texas; and bases his statement on a small Permian reptile bone (which turned up in the Museum of Comparative Zoology a few years ago) with a label in Jacob Boll's handwriting, "Beaver Creek, 50 miles north of Fort Belknap, Texas, 1871." I have been much interested in Romer's note because of my own extensive studies on Boll's …

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 …

Thrips Species Infesting Tomatoes And Other Host Plants Of These Insects In Northern Utah, Darrell R. Maddock

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The purpose of this study has been to determine which species of thrips infest tomato plants and fruits in northern Utah, and to find out which other plants occurring in this area also serve as hosts for tomato-infesting thrips.

Because of the importance of tomato-infesting thrips to the canning industry, it was decided that more complete knowledge of the species of thrips which are found on tomatoes should be obtained. Because most thrips generally have been difficult to control, it was believed that a general knowledge of the plants on which these thrips occur would enable tomato growers to eliminate …