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Forty-Eighth Annual Meeting Of The Iowa Academy Of Science And The Third Annual Convention Of The Junior Academy Of Science Of Iowa, April 20 And 21, 1934, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

The Magnetic Field Between A Double Coil, Frank C. Mcdonald

Field and Laboratory

One method of obtaining a uniform magnetic field is by means of a double coil. This consists of two coaxial coils, such as those used in the Helmholtz galvanometer.

Type Collection Of The Writings Of Robert T. Hill, Ellis W. Shuler

Field and Laboratory

Dr. Robert T. Hill has signally honored the Geological Department of Southern Methodist University by donating to its library the type collection of his writings with an index and annotated bibliography. This collection covers the writings of one of America's leading geologists over a period of nearly half a century. Interesting and valuable in every phase of geology, it is the court of final reference for the student of the history of Texas stratigraphy.

A.A.P.G. Meeting At Dallas, Ellis W. Shuler

Field and Laboratory

Geology students of Southern Methodist University found a rare opportunity in attending the annual meeting of the American Association of Petroleum Geologists in Dallas, March 21-24, 1934. This meeting brought together more than 1500 professional geologists, world wide in distribution. The Association is one of the largest and strongest of scientific bodies. Its publications and programs are of outstanding interest in the field of geology. The program for 1934 was one of unusual merit and was distinguished by the number of papers on geological principles and pure science rather than applied geology.

A New Ovibovine, Symbos Convexifrons, Sp. Nov., Erwin H. Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

In Bulletin 25, entitled The Musk-oxen of Nebraska, the writer figured and briefly catalogued the ovibovines of this State as known at that date. In the meantime an interesting new form unlike that of any species falling within our experience presents itself from the Pleistocene of Cherry County, Nebraska. The new specimen cannot be assigned a place in any of the four following genera: Preptoceras, Euceratherium, Ovibos, or Bootherium, but may possibly be referable to the genus Symbos, to which we are assigning it provisionally. It is so unlike Symbos, however, that it may be a distinct genus. …

Bulletin No. 247 - Effect Of Manure And Of Phosphorus Fertilizer On The Yield And Composition Of Alfalfa Hay, D. W. Pittman

UAES Bulletins

It has frequently been observed by practical stockmen that alfalfa hay produced on poor unproductive land has a much lower feeding value than hay produced on good productive land. Some have also observed that by the use of a supplemental feed rich in phosphorus (such as steamed bone-meal), the feeding value of this poor quality alfalfa hay may be improved, indicating that phosphorus deficiency is at least one cause of its low feeding value.

Bulletin No. 246 - Food Habits Of Rural School Children In Relation To Their Physical Well-Being, Almeda Perry Brown

UAES Bulletins

A study of school children's diet and of their physical status was made in six rural Utah communities, similar in size, and in social, economic, and physical characteristics.

Ecological Relations In The Pitch Pine Plains Of Southern New Jersey, Harold J. Lutz

Yale School of the Environment Bulletin Series

An investigation was undertaken with the primary object of determining the factors responsible for the peculiar development of the vegetation in the Plains community. The conclusion ·is reached that the Plains areas are capable of supporting forest growth similar to that in the Pine Barrens. Inasmuch as the Plains owe their continued existence to repeated fires, it is obvious that effective fire protection is the first and most important step toward their rehabilitation.

The Role Of Membranes And Phase Boundaries In Generating Electric Currents In Living Tissues., Norman E. Epstein

Electronic Theses and Dissertations

No abstract provided.

The Nebraska Meteor And Meteorite Of August 8, 1933, Erwin Hinckley Barbour, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum (1924–2023)

At approximately 10:30 a. m., mountain standard time, on August 8, 1933, a large meteor, traveling in a westerly direction, exploded over the panhandle of Nebraska. The phenomenon was witnessed by many citizens throughout the region, and by a number of students from the University of Nebraska, who were engaged at the time in palaeontological field work in northwestern Nebraska .

A Mounted Skeleton Of Megabelodon Lulli, Erwin Hinckley Barbour

Bulletin of the University of Nebraska State Museum (1924–2023)

A skeleton of Megabelodon lulli, partly composite, was mounted in the laboratory May 31, 1933, and was formally installed and placed on exhibition in Elephant Hall, June 7, 1933.

Changes Of Electrical Resistance In Nerve During Block By Cold, Irvin Franklin Hummon Jr.

Master's Theses

No abstract provided.

The Geology And Mammalian Fauna Of The Pleistocene Of Nebraska Part I Outline Of Pleistocene Geology Of Nebraska Part Ii The Pleistocene Mammals Of Nebraska, A. L. Lugn, C. Bertrand Schultz

Bulletin of the University of Nebraska State Museum (1924–2023)

The object of the present paper is to provide a suitable brief statement of the present state of knowledge of the Pleistocene geology of Nebraska, for an adequate understanding of the Pleistocene Mammal list, by Mr. C. Bertrand Schultz, which forms Part II of this report. The "outline" is necessarily brief and does not contain many detailed sections, nor lengthy discussions of controversial points. It is lacking in adequate detailed descriptions of new formations and may not be entirely convincing to many readers. The only excuse which the writer can offer for the shortcomings of the following pages is the …

Chicle Exploitation In The Sapodilla Forest Of The Yucatan Peninsula, Cyrus Longworth Lundell

Field and Laboratory

The dominant forest tree of the virgin bush areas of the Yucatan Peninsula is the sapodilla, Achras Zapota L., important commercially as the source of chicle, the basis of chewing gum. From Cape Catoche to Lake Peten it is one of the most frequent species, characterizing this limestone region, which is a phytogeographic unit with a typical flora

An Analysis Of The Habitat Distribution Of The Vertebrate Fauna Of A Stream- Bank Association In Western Kansas, Olive Falls

Master's Theses or Doctor of Nursing Practice

This present paper is chiefly concerned with the distribution of animals. The environmental and faunal conditions of Western Kansas have not been studied, and they are rapidly changing, due to human occupancy of the region. Therefore, a major object of this report is to put on record information in regard to the present vertebrate animal life in Western Kansas. Profound changes in the native conditions have already been recognized; for example, many animals have become extinct, and others are gradually vanishing. It is in the hope of contributing something of the facts of the status of the species in this …

Filicales Of The Mammoth Cave Region, William Youmans

Masters Theses & Specialist Projects

The purpose of this investigation was to determine the distribution of each species of ferns with regard to the geologic strata, altitude and temperature and moisture relationships. A systematic classification was made of all species of ferns found in the region.

The Relation Of The Native Forest Cover To The Physical And Chemical Nature Of The Soils Of The Mammoth Cave National Park Area, Sheppard Walker

Masters Theses & Specialist Projects

This study was undertaken for the purpose of determining the relation existing between the native forest cover and the chemical and physical properties of the soils of the Mammoth Cave National Park area. The study was suggested by certain references in the literature to a correlation existing between forest cover and the geological, chemical and physical nature of soils of this area. The recent attempt at reforestation in the Mammoth Cave National Park area renders such a study timely, and it is believed that the results reported in this paper will materially aid the Mammoth Cave National Park Commission and …

The Effect Of Theelin Upon The Growth And Development Of The Genital Tracts Of The Female White Rat, Robert H. Grogan

Bachelors’ Theses

This paper has been designed to meet the requirements of a bachelor's thesis. The main substance of the thesis is a reiteration of some of the work done by other men in the field of ovarian hormones with some original work on the part of the author. I have endeavored to prove that theelin controls, to some extent at least, the development of the genital tracts of female white rats. Especial care was taken to follow out in detail the methods used by Doisy and his associates in similar experiments so that I would have a criterion by which to …

Heredity In Twinning, Dolores M. Kauffung

Bachelors’ Theses

Identical twins have been tn basis for a large amount of the evidence produced by scientists in upholding the contention that heredity is stronger and more important than environment.

It has been the purpose of this paper and the intention oi' the author to develop this theory and to attempt to discover how far heredity really affects the individual and. to what extent it may be influenced by environment.

Forty-Seventh Annual Meeting Of The Iowa Academy Of Science And The Second Annual Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1933, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

An Epistemology, John D. Boon

Field and Laboratory

Our world lies midway between the stellar world above and the subatomic world below. It would be difficult to conceive of a more favorable position for a race that seeks to comprehend the material universe. This position makes it possible to look both upward and downward, and to use both telescopes and microscopes in obtaining empirical evidence upon which to build theoretical conclusions. A few years ago it might have been claimed that this midway position is more apparent than real; that by mere chance men had gone equal distance into things that were above and below their world; that …

The Silvan Flora Of The White Rock Lake Region With Reference To Soil Types, Landon H. Baker

Field and Laboratory

White Rock Lake, lying at the east border of the City of Dallas, has been the focus of considerable biological study during the past few years, and the writer has been especially interested in the trees growing in the region. In this connection the question arose as to whether or not a correlation might exist between the species of woody plants found in the locality, and the physical and chemical structure of the various soils of the vicinity. The recently completed Soil Survey of Dallas County offers data upon the origin and nature of these soils, and these have been …

Notes, Corrections, Alumnae Notes

Field and Laboratory

No abstract provided.

The Spectrum In Modern Science, Mildred Venable Lancaster

Theses & Honors Papers

No abstract provided.

Equipping A Vitamin Laboratory On Depression Funds, May L. Whitsitt

Field and Laboratory

The spending of a sum of money for research purposes in days of decreased and declining income takes on the air of a real adventure. When given the opportunity of undertaking a research problem in the field of vitamin investigation the writer eagerly set out to see how far funds could be extended.

Bulletin No. 242 - Drainage Of Land Overlying An Artesian Ground-Water Reservoir: Progress Report, O. W. Israelsen, W. W. Mclaughlin

UAES Bulletins

Certain tracts of land in the West formerly used to produce grain and forage crops now produce only pasture grasses of comparatively low quality because of the water-logging and alkali accumulation which has occurred since irrigation was begun. Other tracts now producing only light crops of wild hay probably would produce profitable crops of alfalfa and clover, provided the water-table were lowered and the water-logged and alkaline condition of the soil removed. Still other areas are almost wholly nonproductive because of the concentration of excessive quantities of harmful alkali salts.

Knowledge concerning (1) the causes of water-logging, (2) economical methods …

Field And Laboratory, Notes

Field and Laboratory

With the belief that the discipline of writing and the possibility for publication will promote a spirit of research, Field and Laboratory begins with this issue as a semi­annual magazine devoted to the publication of the results of work done by students and teachers of science in Southern Methodist University. The articles in this issue include the records of experiments conducted in the Physics, Biology, and Chemistry laboratories, and of field studies in Geology and Geography. As the magazine is sponsored by the entire science group, articles will of necessity be varied in character; it is planned to include in …

Root System Of Quercus Macrocarpa In Relation To The Invasion Of Prairie, J. E. Weaver, Joseph Cramer

Department of Agronomy and Horticulture: Faculty Publications

Invasion of trees into grassland is primarily a phenomenon of plant competition. It involves the relation of the invaded and the invader to light and other atmospheric factors of the habitat, both physical and biotic. But perhaps even to a greater degree the edaphic factors, and especially water in dry climates, are concerned. Consequently to understand the reasons for plant distribution and the changes resulting from natural successions, a knowledge of the parts of the plants underground and of the interrelations of the root systems is of fundamental importance.

The great tension zone or ecotone between the deciduous forest formation …

Bulletin No. 236 - The Manufacture Of Cheese From Soft-Curd And Hard-Curd Milks, R. L. Hill, A. C. Merrill

UAES Bulletins

Little investigational work has been conducted on the effect of the hardness of curd of milk on the quality, quantity, and commercial value of cheese.

In July 1930, a preliminary report from the Utah Agricultural Experiment Station was made on these researches. This report indicated that for the manufacture of cheese hard-curd milk was far superior to soft-curd milk. This research is a continuation of that project.

Hard- and soft-curd milk used in the tests reported was obtained from Holstein cows. The fat content of each milk was practically the same. While the difference in curd hardness between the soft- …

Bulletin No. 235 - Biennial Report, Utah Agricultural Experiment Station: July 1, 1930 To June 30, 1932, P. V. Cardon

UAES Bulletins

President E. G. Peterson

Sir: I have the honor to transmit the report of the Utah Agricultural Experiment Station for the biennium ending June 30, 1932. This report includes the reports of the various departments as well as other information pertaining to the work of the Experiment Station during this two-year period.

Respectfully submitted, P. V. CARDON, Director.