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Reports: The Secretary; The Treasurer; The Editor; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

Synthesis Of Estrogenic Isoflavone Derivatives, Lester Yoder, Edmund Cheng, Wise Burroughs

Proceedings of the Iowa Academy of Science

Natural estrogens in plants have assumed considerable importance since the demonstration of their presence in subterranean clover by Bennetts (1) in 1946 and the identification of the isoflavone, genistein (V, 4', 5, 7-OH) as the probable substance responsible for some of the estrogenic activity by Curnow and Bennetts (2) in 1952. Earlier the isoflavones were found in soybean meal as genistein glucoside (3) (5), methyl genistein (V, 6',5, 7,-OH,8- CH₃), isogenistein (V,6',5,7-OH), tatoin (V,4',5-OH,8-CH₃) ( 4), daidzein (V,4',7-OH) and formononetin (V,4'-OCH₃,7-OH) (5). Furthermore the isoflavone biochanin A (V, 4'-OCH₃, 5, 7-OH) was …

The Present Status Of Systematic Mammalogy In Iowa With Some Notes On Recent Mammal Collecting Within The State, Lowell S. Miller

Proceedings of the Iowa Academy of Science

In this short discussion the author will try to explore the present status of systematic mammalogy in this state and will show by his own trapping results that there is a great deal of work yet to be done. Thomas G. Scott (1937) published a paper entitled "Mammals of Iowa" in the Iowa State College Journal of Science. In the introduction he implies that the purpose of the paper is to stimulate interest in the systematics of mammals in Iowa. In searching through the recent literature on the subject the author has come to the conclusion that it did not …

Blue-Green Algae Control At Storm Lake, Earl T. Rose

Proceedings of the Iowa Academy of Science

Heavy growths of blue-green algae are a major factor in limiting recreation at several of Iowa's lakes during the summer. The huge accumulations of these small primitive plants render lakes uninviting for swimming, angling or sight-seeing and when decomposition of the algae occurs putrid odors emanate therefrom creating intolerable situations. Occasionally certain species may become poisonous (Olson, 1951; McCleod and Bandar, 1952; Ingram and Prescott, 1952; Rose, 1953), thus creating the necessity for emergency measures to prevent loss of human life as well as loss of domestic animals and wildlife.

The Formal Science Background Of Students Enrolled In General Science Classes In Dewitt High School, Charles O. Foreman

Dissertations and Theses @ UNI

No abstract provided.

Postwar Trends In International Trade, Howard John Eischeid

Dissertations and Theses @ UNI

This study represents an attempt to survey the field of international trade since the close of World War II, in an effort to discover whether the trend is toward fewer, or more restrictions on trade between nations.

Some Methods And Materials For The Study Of Insects In The Intermediate Grades, Walter Eugene De Kock

Dissertations and Theses @ UNI

The purpose of this study is twofold. First, the author is developing and describing some activities that may be carried out by teachers and pupils as they study insects and second, to describe simply constructed material that can be used in carrying out the activities.

A Study Of Conservation Education Presented At The Iowa Teachers Conservation Camp From 1950 Through 1953, Novella Dorothy Bredbenner

Dissertations and Theses @ UNI

Purpose of the study. It was the purpose of this study to present a summary of the conservation education program of the Iowa Teachers Conservation Camp located at Springbrook State Park near Guthrie Center, Iowa. The study involved four problems:

l. To record the history and philosophy of the camp.

2. To present a summary of each summer's camp program from 1950 through 1953.

3. To secure the campers' appraisals of their camp experience.

4. To prepare recommendations for future camp programs.

Recommended Books In Iowa’S Classrooms For Five Year Old Children, Ruth Bernice Collins

Dissertations and Theses @ UNI

The purpose of this study is to discover which of highly recommended books are provided in a sample of Iowa's classrooms for five year old children. It is not the primary purpose to examine factors which influence the choice of books found in these classrooms. No attempt is made to evaluate the kinds of experiences children receive in the use of books which are provided.

Iowa State Teachers College Schedule Of Classes, Fall 1953, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

Iowa State Teachers College Schedule Of Classes, Summer 1953, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

Iowa State Teachers College Schedule Of Classes, Spring 1953, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.

The Alumnus, V37n1, February 1953, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Classes of 1903, 1928 to be Honored at Annual Spring Reunion, May 31
-- We've lost track of a few
-- Professional Advancement
-- Iowa's Investment in Teachers College
-- Should Iowa Set Up and Operate an Educational Television Network in the Public Interest?
-- Panther Sports Parade
-- Keeping up With Alumni
-- Marriages
-- Births
-- Deaths
-- Mail Box
-- Summation of Locations

Some Loessoid Deposits Of Central Iowa, L. A. Thomas, K. A. Riggs Jr., R. N. Tench

Proceedings of the Iowa Academy of Science

During the course of an investigation of the bedrock geology of western Story County, Iowa, our attention was directed to the occurrence of some unusual Pleistocene deposits. These deposits consist of calcareous silts, which from the viewpoint of mineralogy, textural analysis, physiographic expression, and paleontology embrace most of the criteria by which loess is generally described or recognized. These deposits in Story County have been described as loess by Beyer (1898, and 1899). The most apparent but unusual feature of these deposits is their vertical and lateral gradation into till or alluvial material. Similar deposits are now known to occur …

1953 Old Gold, Iowa State Teachers College

UNI Yearbooks

The student yearbook of the Iowa State Teachers College, later known as the University of Northern Iowa.

A Study Of The Separation Of Pigments Of Euglena 9 By Chromatographic Adsorption Techniques And A Determination Of Their Absorption Spectra, Ruth W. Helmick

Proceedings of the Iowa Academy of Science

The flagellate protozoans, Euglena have been observed to exhibit different pigments but few comparative studies have been made concerning them. If there is a difference in the pigments of the various species of Euglena, a method of separation of these pigments or identification would be of interest and value to those working in the fields of physiology and taxonomy. The purpose of the present study is to determine the absorptive spectra of various pigments, isolated by chromatographic adsorption techniques from bacteria-free cultures of Euglena 9. The original culture was obtained from Dr. Luigi Provasoli of Haskins Laboratories, New York, New …

Some Attempts At Phylogeny Of Early Vertebrates, George M. Robertson

Proceedings of the Iowa Academy of Science

There is an often-quoted reply of a mountain-climber to the question of his motives in mountain climbing. "Why do I want to climb that mountain? Because it is there." The same characteristic of curiosity has driven men to investigate all sorts of things aside from mountains, and in many, perhaps most, cases we make the same reply if we are really honest. So in paleontology one generally starts with the small-boy motive and some fortunate souls continue with it. They are the rockhounds, the human "pack-rats", like the famous Lauder Dick, the Baker of Thurso. For some of us the …

College Catalog 1952-1953, Iowa State Teachers College

UNI Programs and Courses Catalogs

Table of Contents:

Admission to College ... 40
Application for Admission ... 3
Certificate for Teaching ... 51
College Courses ... 71
Curricula ... 54
Dining Rooms ... 21, 22, 27
Dormitories ... 24, 25
Employment of Students ... 28
Enrollment and Registration ... 44
Exemption from Fees ... 29
Extra-Curricular Activities ... 32
Fees ... 45
Graduate Study ... 169
Loan Funds ... 28
Major Lines of Work Offered ... 59
Medical Service ... 37
Placement Bureau ... 37
Requirements for Graduation ... 47, 49
Room and Board ... 24, 25
Rooming Houses ... 25, 27
Scholarships ... 29 …

Toxic Algae In Iowa Lakes, Earl T. Rose

Proceedings of the Iowa Academy of Science

Almost all of the natural lakes of Iowa develop at certain periods throughout the summer and fall months, heavy growths of small floating plant life commonly known as blue-green algae. These tiny, primitive organisms develop rapidly in certain lakes, and often form unsightly, paint-like scums over calm lake surfaces, and particularly along lee shores. Upon decomposition of these heavy scums, or "bloom" as they are commonly termed, terrifically foul, pig-pen odors issue therefrom, making human living conditions in the vicinity intolerable, and limiting to a large degree all aquatic recreation. In addition to these unwholesome attributes, certain species of blue-green …

Reports: The Secretary; The Treasurer; The Editor; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

In Memoriam: William E. Albert; Jacob P. Anderson; Ellis Ingham Fulmer; Henry Albright Mattill; Maurice George Ricker; William James Rusk

Proceedings of the Iowa Academy of Science

No abstract provided.

The Effect Of A Shift In Time Of Deprivation Upon Performance In Instrumental Learning, Charles K. Ramond

Proceedings of the Iowa Academy of Science

Behavior has often been found to be a positive function of the strength of the hunger drive (D), where the latter was defined in terms of hours of food deprivation (Td). Attempts to interpret this relationship have been concerned with two alternatives: either Td determines only D, or Td determines, in addition to D, the amount of learning or habit strength (H) acquired. Characteristic experimental designs have been used to evaluate these alternative explanations. In one set of experiments (2, 4, 5, 8, 11, 12), after an initial period of constant drive, responses are observed in a test period during …

Morphological Identification Of Free-Living Amoebida, Eugene Cleveland Bovee

Proceedings of the Iowa Academy of Science

One of the knottiest problems in zoology is the specific identification of naked, free-living amoebas of the order Amoebida. Usual methods of taxonomic identification, i.e. easily distinguishable morphological contours of sufficient permancy seem to be lacking in them. Schaeffer (1926), amongst others, points out that such a creature as "the amoeba," does not exist. He speculates, perhaps rightly, that the naked, free-living amoebas are of polyphyletic origin, and that to attempt to classify them phylogentically is virtually impossible. The supposed "simplicity" of amoebas, because of their resemblance to the "basic cell," has given credence to the belief that there is …

Ecology Of The Raccoon In Central Iowa, J. L. Cabalka, R. R. Costa, G. O. Hendrickson

Proceedings of the Iowa Academy of Science

The marked increase of the Upper Mississippi Valley raccoon (Procyon lotor hirtus N. and G.) in Iowa during recent years is well-known. Sanderson (1951) and recent releases by the Iowa State Conservation Commission suggest a yearly average of about three or four times as many raccoons during the decade 1943-'52 as in the period 1933-'42. The general opinion of hunters and trappers was that such increases were apparent also in Story County, of central Iowa. From raccoon family track and other "signs along streams Costa and Hendrickson estimated roughly two family groups of raccoons to the mile, or approximately …

Food Habits Of The Carp In Northwest Iowa Lakes, Tom Moen

Proceedings of the Iowa Academy of Science

In the comparatively short time since carp (Cyprinus carpio) were brought to the United States, they have dominated an amazingly large percentage of the fishery resources of this country and an equally large percent of the efforts of fishery management. Carp have been credited at one time or another, by sportsmen and biologists alike, with being the root of all fishery problems and in many cases game problems as well. The food and feeding habits of the carp usually receive the lion's share of this blame. The data presented in this study form a portion of a general …

Determination Of The Incubation Period Of Bacillus Larvae White, Causal Organism Of American Foulbrood In Honey Bees (A Pis Mellifera L.), O. W. Park

Proceedings of the Iowa Academy of Science

Diseases of the immature stages of the honey bee, i.e. the brood, cause large annual losses in bees, honey, and equipment. It would be bad enough if such losses were reflected only in the increased cost of producing honey, but far more serious is the decreased yield of at least 50 orchard, garden and farm crops. These are crops such as apples, cucumbers and the clovers which require or benefit from the pollinating services of the honey bee. Two types of brood diseases, both known as foulbrood, had been recognized prior to 1900, but were inadequately distinguished until White (1907, …

A Check List Of Mammals Of Present Occurrence In Iowa With Notes On New Additions And Distribution Since 1937, Emmett Polder

Proceedings of the Iowa Academy of Science

There is little definite information regarding the distribution limits of mammals known to occur in Iowa and neighboring states. The purpose of this paper is to add to the rather sketchy knowledge of mammal distribution in Iowa. There is need for much more observation and collection of specimens and data before a comprehensive picture of mammal distribution is completed. A better knowledge of where certain mammalian forms do, or do not, occur is important to the students of ecology, game management, parasitology, taxonomy, and agriculture since the mammal coactions with other life forms have important relations to these fields.

Recent Status Of The Beaver In Iowa, Glen C. Sanderson

Proceedings of the Iowa Academy of Science

Many years prior to the settlement of Iowa her streams had been scoured by Indian hunters and white trappers for fur, principally beaver. The hunters and trappers had taken the cream of the beaver before the earliest settlements were established; however, remnants of the population were still present as is attested to by the fact that Iowa geography has many names alluding to the beaver. Beaver could not stand both persecution and civilization, so they disappeared from Iowa sometime after the seventies and in 1872 the legislature placed them on the "continuous closed season" list. By the late twenties there …

The Character Of Robinson Jeffers: A Study In “Inhumanism”, Betty Jean Evans

Dissertations and Theses @ UNI

When one reads many of the long narrative poems of Robinson Jeffers, one wonders at the characters who act out their lives against a backdrop of the contemporary California coastal region. The characters live isolated lives as ranchers, farmers, and farm women; they go about the business of eking out an existence, of cultivating their land, of caring for their livestock. Often, they commit horrible, unnatural acts and always, they or their families are involved in episodes which result in death or injury. Although these characters do not have the stature of an Oedipus or a Medea, their lives and …

Iowa State Teachers College Schedule Of Classes, Fall 1952, Iowa State Teachers College

UNI Schedule of Classes

A listing and schedule of the courses being taught as well as policies and procedures concerning attending classes at the Iowa State Teachers College.