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The Apology Of A Pedagogue: Editorial

Science Bulletin

"The world's stock of knowledge is seldom augmented by pedagogues." H. L. Mencken.

With all due respect to the author of the above and the several brilliant things he has written, bosh! The sentence makes interesting reading, and doubtless returned the writer several cents per word, besides giving his doting henchmen many chuckles at the expense of the puerile pedagogue. But mere pertness of expression connotes neither truth nor profundity, and had the writer of the above sentence set about deliberately to formulate a fundamental untruth, he could not have fashioned one whose Munchausen quality was more obtrusively obvious.

In Memoriam: George Ellsworth Thompson; Stephen J. Popoff; Samuel Walker Beyer; Johan Augustus Udden; William Ernest Andrew Slaght; Merrill M. Meyers, L. B. Spinney, Edward Bartow, C. S. Gwynne, W. H. Norton, Christian A. Ruckmick, James H. Lees

Proceedings of the Iowa Academy of Science

No abstract provided.

The Cedar Valley Limestone At Glory And At Waterloo, Iowa, L. W. Wood

Proceedings of the Iowa Academy of Science

Recent quarry operations at Glory (N. E. ¼ Sec. 36 Spring Creek Twp., Black Hawk County, about 6 miles east of La Porte City) and in the north part of Waterloo (N. W. ¼ N. W. ¼ Sec. 14 East Waterloo Twp.) have brought to view excellent sections of the Cedar Valley Stage of the Devonian System of rocks. This paper describes the succession of strata found in each, and briefly summarizes the results of a considerable number of physical tests made on samples from them.

New Data On The Upper Devonian Of Iowa, S. W. Stookey

Proceedings of the Iowa Academy of Science

A recently discovered exposure of fossiliferous beds of Upper Devonian age in Iowa County, Iowa, containing a rich and well preserved fauna, is believed to be of unusual interest and significance. These beds were uncovered by the road grader and extend along the north side of the road across Section 29, Amana Township, for a distance of about a mile. The exposure begins a few rods west of the limits of Middle Amana and with exception of two or three interruptions by ravines, is continuous to the point where it disappears under the Hohe Amana outlier of Des Moines sandstone. …

The Lighting Of A Home Under Various Color Conditions, William Kunerth, Kathryn C. Waldron

Proceedings of the Iowa Academy of Science

That a very marked difference is noticed in the ability and comfort with which one can see things in different homes, no one will doubt. This depends on the types of lamps and luminaires used, upon the wattage consumed, the color effect produced by colors of lamps and wall covering; and also on the reflection factors of walls and ceiling. It is on the last mentioned factor that we wish especially to dwell and for which we can give definite experimental data.

A New Vaccum Type Mercury Still, L. E. Pinney

Proceedings of the Iowa Academy of Science

The still consists of a compact single unit of Pyrex glass embodying a boiler, a water cooled condenser, and a receiver. Mercury can be poured from the receiver as required without disturbing the contents of the boiler.

Thermoelectric Power In Bismuth Single Crystals In The Neighborhood Of The Melting Point, A. Soroos

Proceedings of the Iowa Academy of Science

The thermoelectric power is determined directly and studied as a function of temperature for a range extending from several degrees below the melting point to a temperature well above the melting point. A transition region exists for about ten degrees above the melting point. This is taken as a definite indication of the persistence of a marked crystalline arrangement in the liquid near its freezing point.

Resistivity Of Zinc Crystals, W. J. Poppy

Proceedings of the Iowa Academy of Science

In an attempt to settle the discrepancy between the resistivity measurements of Bridgman on the one hand and Tyndall and Hoyem (Phys. Rev. 38, p. 820; 1931) on the other, single zinc crystals of one square cm. cross section and ten cm. long have been grown and measured. The results are in agreement with Tyndall and Hoyem. Present indications are that certain anomalous crystals (i.e. not truly single) have abnormally low resistivities and show great sensitivity to slight strain. The technique of growing these large crystals will be described.

Variation Of Intensities Of The Visible And Of The Ultra Violet In Sunlight And In Skylight, William Kunerth, Russel D. Miller

Proceedings of the Iowa Academy of Science

The amounts of radiations received from the sun at 42° N. latitude at various hours of the day throughout the year, both in the visible spectrum and in the ultra violet, were determined experimentally. Curves are plotted and tables are given to show what percent of the total comes from the sky alone in each of these regions of the spectrum. From these data, one may determine the relative amounts of ultra violet or visible radiations received at any two periods of the day or year either from sun and sky combined or from one of these alone.

Mean Free Paths Of Gases, John A. Eldridge

Proceedings of the Iowa Academy of Science

A molecular beam passes through a chamber enclosing gas at low pressure. The emergent beam is measured on a Pirani gauge. The question has been raised whether a collision in the classical sense has any meaning without specification of the angle of scattering considered. As a preliminary experiment it was determined that the molecules suffering very small deviations (less than a degree) were negligible in number. The mean free path of H₂, He, N₂, O₂, molecules have been measured; in each case the values found are smaller (by several fold) than the values determined …

Incidence Of Colorblindness At Iowa State College, Martin F. Fritz

Proceedings of the Iowa Academy of Science

During the past two years 2,163 students at Iowa State College were tested for colorblindness by means of the Ishihara Test. All the tests were given individually by the writer at the time the students were given a physical examination. This investigation was made possible through the kindness and cooperation of Dr. J. F. Edwards and Dr. H. L. Johnston of the College Hospital staff.

Biology Courses In Fifty American Colleges, O. T. Walter

Proceedings of the Iowa Academy of Science

This statistical study was prompted by a desire to know more definitely just what courses are being offered in the field of Biology; to gain a better understanding and appreciation of some of the varied problems which are common to the administrative heads of Biology departments; to offer a bird's eye view of curricular content to those students who are looking forward to teaching Biology or administering a department in some college devoted more exclusively to undergraduate rather than graduate study; and to obtain, with some degree of reliability, a standard of comparison for our own department.

Current Induction, L. Begeman

Science Bulletin

The modern transformer, now quite generally used in the commercial distribution of electrical power in the cities of the world, ranks next to the dynamo in importance in the electrical world. The transformer is an invention which embodies. the practical application of Faraday's first experiment in current induction, in which a closed iron ring carrying a primary coil and a secondary coil was used.

College Catalog 1931-1932, Iowa State Teachers College

UNI Programs and Courses Catalogs

Table of Contents

College Calendar for the Year 1932-33 ... 5
State Board of Education ... 6
Officers of Administration and Instruction ... 7
General Information
Historical Sketch ... 26
Buildings and Grounds ... 26
Enrollment ... 29
Expenses Tuition and Fees ... 29
Room and Board in Bartlett Hall ... 30
Room and Board in Private Rooming Houses ... 31
Scholarships ... 31
Employment of Students ... 31
Loans ... 32
Student Organizations ... 32
The Placement Bureau ... 33
General Regulations
Entrance Requirements ... 34
Admission with Advanced Standing ... 36
Advisers and Amount of Work ... 36 …

Current Induction, L. Begeman

Science Bulletin

ln the last number of the Science Bulletin [vol.4 no.3] we discussed Faraday's two experiments in current induction. It is interesting to recall at this time that September 21 of this year a centennial celebration of Faraday's discovery was held in Queen's Hall, London. Sir William Bragg, a renowned English physicist, gave the address on this occasion. This address was broadcast generally in America, being transmitted across the ocean by radio.

Science Bulletin, Vol.4 No.4, December 1931 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Editor And Advisory Board

Science Bulletin

A Service Bulletin for Teachers of High School Science.

General Science, E. J. Cable

Science Bulletin

In our last article we discussed one of the common minerals found on the earth's surface. In this article the writer will attempt two things: first, to describe a few of the common rock-making minerals; and second, to discuss some of the simple ways of distinguishing the common igneous rock found on the earth's surface. The commonest igneous rock-making minerals, besides quartz, are the feldspars, the irons, pyroxene, hornblende, and the micas.

What About Organic Evolution?, C. W. Lantz

Science Bulletin

One of the great generalizations of science is the theory of organic evolution. It is, however, very commonly misunderstood by the average person. To many, thanks to such deluded individuals as the late Wiliiam Jennings Bryan, it is a very dangerous doctrine and any one who believes in it is an atheist and must reject the teachings of the Bible. I have had college students ask this question. Is it possible for one to believe in evolution and be a Christian? This question arises only from one who has misconceptions as to the real meaning of evolution and perhaps also …

Motivation In Physics, W. H. Kadesch

Science Bulletin

In recent years there has been a decided trend in high schools the country over toward general science, and away from the particular sciences, physics, chemistry, biology, etc. The proponents of general science seem convinced that this is due to a better choice of subject matter in their field, and to better methods of presentation. However this may be, it will certainly be well for those of us who have to do with the teaching of the special sciences to subject our own work to critical examination. We should aim to discover our faults of whatever kind, and eliminate them.

Disillusionment!: Editorial

Science Bulletin

Who has not felt his very flesh writhe and shrink on reading Hugo's fearful story of Gilliatt's fight with the octopus? The art of the great Frenchman is here superb. He compels the reader to identify himself with his hero. Gilliatt's struggles and emotions are his also. The monster projects itself upon him- its tentacles entwine him, their horrible sucking vacuum cups pull at his flesh; he strains, heaves, grasps at these accursed circling gelatinous bands; they seem to yield, but never actually; they crush, excoriate, scarify - his flesh seems to melt - he is disintegrating-it is death in …

On Snakes Swallowing Their Young, Roy L. Abbott

Science Bulletin

Do snakes actually swallow their young to protect them and later spew them out again as Dr. Ball states further in his article? Well, I have never seen them do this, and I do not know of any other student of snakes who has. Ditmars, Curator of Reptiles at the New York Zoological Gardens, has never seen anything of this kind, and he daily observes more snakes than the average man does in a lifetime.

Title Page

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Snakes That Do Not Exist, C. W. Lantz

Science Bulletin

As a boy I was always on the lookout for two kinds of snakes which I never found. These were the so- called hoop snake, and joint snake. According to popular tradition - and the tradition is still with us - the hoop snake was supposed to take his tail into his mouth and go rolling about the country much to the amazement and horror of his human observers.

Fall Term Commencement [Program], November 24, 1931, Iowa State Teachers College

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates.

Title Page

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Suggestions For The Teaching Collection In Biology, O. R. Clark

Science Bulletin

There is nothing in the Biology course which can take the place of carefully planned and directed field work. The students should be encouraged to observe carefully and accurately for themselves and be given every opportunity to become acquainted with living things in their natural surroundings. The aquarium and terrarium can be made to supply much interesting material for study and should be in the laboratory whenever possible.

David Starr Jordan: Editorial

Science Bulletin

The subject of this sketch seems to have been fortunate in both conditions, heredity and environment. He developed a huge, vigorous body and a powerful, alert mind, one peculiarly capable of noting and retaining infinite details of color, form, and structure. The fishes, a group characterized by almost unbelievable diversity of form, color-pattern, and habitat, were thus admirably suited to his retentive type of mind, and David Starr Jordan became an ichthyologist, a student of fishes.

Induced Current Electricity, L. Begeman

Science Bulletin

In the May Number of the Science Bulletin, the writer gave a brief outline of the historical development of our present knowledge of the magnetic properties of an electric current. In tracing this development from an experimental point of view, a brief statement was made of the contributions of each of the following renowned scientists: Oersted, Arago, Ampere, Faraday and Henry. In this article of the May Number no reference was made to current induction as one of the magnetic effects of an electric current.

The Toll Of The Automobile, Roy L. Abbott

Science Bulletin

When the telegraph first came into general use in this country thousands of birds, particularly prairie chickens, were killed annually as a result of flying against the tightly stretched wires. On account of its great height, many birds collide with the Washington Monument, and are thus fatally injured; every lighthouse along the coast takes a great toll of birds during the year. The railroads destroy many animals also, but the automobile murders more wild animals than all the above-mentioned things combined. In the destruction of our wild fauna, it is next in importance to the rifle and shotgun. The Isaac …