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Carcinogenic Hydrocarbon Effect On Rat Liver In Vitamin A (Abstract), T. U. Marron

Proceedings of the Iowa Academy of Science

The depleting effect of methycholanthrene on rat liver vitamin A stores was studied by use of the antimony trichloride method. Phenanthrene injected rats served as controls for the carcinogenic agent. The results were checked on a later series of animals by the use of fluorescent microscopy for the deletion of vitamin A in the tissue.

Reports: Executive Committee; Secretary; Treasurer; Staff Reports; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

The Action Of The Ethanolamines On Cornstalk Lignin (Abstract), Elton Fisher

Proceedings of the Iowa Academy of Science

No abstract provided.

The Alumnus, V24n3, July 1940, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- An Alumni Calendar of Events
-- Teachers College Mourns Loss of Dr. O. R. Latham
-- The Campus Today
-- How Beginning Teachers Get in Trouble
-- Farewell to the Literaries!
-- Panther Sports Touch New High!
-- "Man's Eternal Dream Will Pull Us Through"
-- "Study the Past ... Transmit the Conclusions"
-- You, Too, Would Have Enjoyed It
-- Unit Reunions
-- Letter from Readers
-- News
-- Marriages
-- Births
-- Deaths
-- Every County Represented
-- We're Proud to be Graduates of the Iowa State Teachers College

A Study Of The Urogenital Systems Of Emys Blandingii, With Observations On The Occurance Of Mullerian Ducts In Males, Frank A. Nicholson, P. L. Risley

Proceedings of the Iowa Academy of Science

It is somewhat surprising that accurate information concerning the urogenital systems and cloacae of male and female turtles is not readily available to the student of comparative anatomy. Literature pertaining to the urogenital system of turtles is concerned mostly with species alien to North America, and is mainly in foreign publications; also, most illustrations do not give clear or precise impressions of these structures. The information available either is of a too general nature and includes somewhat superficial observations on numbers of species, or is concerned with only a single aspect of the entire system. In view of this, it …

Proceedings Of The Fifty-Fourth Annual Meeting Of The Iowa Academy Of Science, Held At Mount Vernon, April 19 And 20, 1940: Minutes Of The 1940 Meeting

Proceedings of the Iowa Academy of Science

No abstract provided.

Reports: Executive Committee; Secretary; Treasurer; Staff Reports; Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

Fifty-Third Annual Meeting Of The Iowa Academy Of Science And The Eighth Annual Convention Of The Junior Academy Of Science Of Iowa, April 21 And 22, 1939, Iowa Academy Of Science

Iowa Academy of Science Documents

No abstract provided.

Some Features Of The Squaw Formation Near Lander, Wyoming, Benjamin H. Burma, Irvin J. Anderson

Proceedings of the Iowa Academy of Science

The studies of the Squaw formation of the "Chugwater" series were conducted in the vicinity of Lander, Fremont County, Wyoming. Most of the observations were made at Derby Dome which is located in parts of T31N and T32N, R98W fifteen miles southeast of Lander. Others were made at Dallas Dome, nine miles southeast of Lander, and at Squaw Canyon, the type section, about four miles west of Lander. The region is one of moderately high, but not mountainous relief. The elevation at Lander is about 5350 feet, Derby Dome being somewhat less and Squaw Canyon somewhat more. Since it is …

The Philosophy Of Science, H. T. Davis

Proceedings of the Iowa Academy of Science

A few months ago I sat at a banquet in a room of mirrors. The group of guests communicated with one another by spoken words. But as I sat and looked down the corridor of reflected images of ourselves, I could not help but feel that a vision of the great past of the human race was presented to my eye. As far as one could see, a vast assemblage of human forms was visible and I felt that in this little instant of the present time we were accompanied by the shadows of all those who had lived before …

Diseases Of Cultivated Lupines, C J. Gould Jr.

Proceedings of the Iowa Academy of Science

The cultivation of lupines has been practiced in Europe for over a thousand years. Impoverished Greeks and Romans used lupine meal in their bread and farmers have long grown the plants for forage and green manure. Extensive cultivation of these plants would be expected because the seed, which consists of from 30 to 40 per cent protein, is high in food value and because relatively high yields can be obtained even under unfavorable conditions. Stock poisoning, however, has frequently resulted from consumption of these plants owing to the presence of harmful alkaloids. Such substances could be removed from the seeds, …

The Address Of The President: The Chromosome And The Origin Of Species, J. N. Martin

Proceedings of the Iowa Academy of Science

In Lamark's Philosophy of Zoology published in 1809 and devoted to the author's views on the origin of species there is the following statement: The most important of the laws, methods, and progress of nature have nearly always sprung from the examination of the smallest objects which she contains and from apparently the most insignificant enquiries. The studies of chromosomes, nuclear bodies so minute that they escaped discovery until recently but now considered the primum mobile of nearly all life processes, have well verified the truth of Lamark's statement. That the chromosomes, insignificant in sizes as they are, constitute the …

The Alumnus, V22n3, July 1938, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Cry of Anguish Comes from China to T.C. Mother
-- President O.R. Latham
-- "The Obligations of a Teachers College"
-- Honor Badges Awarded at Fifty-Eighth Reunion
-- Panther Prowl
-- A Campus Surveys its Religious Program
-- S.A. Lynch Delivers Baccalaureate Address
-- Alumni Office Visitors
-- Faculty Activities
-- Alumni News
-- Marriages
-- Births
-- Deaths
-- Alumni Calendar of Events

Student Opinion Of Examinations, Russell D. Miller

Proceedings of the Iowa Academy of Science

Three hundred twenty-five students in Agricultural .Physics were questioned regarding their preference for and the merits of the four rather general types of examinations, the completion, the multiple choice, the true-false, and the essay type. This survey reveals a decided preference for the multiple choice type of object test. The multiple choice was also ranked highest by the students on the following points: Fairness in grading; the lack of confusing and misleading questions; the number of questions that are thought provoking and require reasoning; the degree to which the questions represent the material taken up in the course; the ability …

An Experiment In The Teaching Of Industrial Physics, M. E. Graber

Proceedings of the Iowa Academy of Science

While we as teachers of engineering physics comparing ourselves with ourselves and grading objective tests of many types and stripes are inclined to think that our teaching and student product are satisfactory, there may be criteria which our instruction is not meeting. Impressed with this possibility I have made an analysis of my findings obtained from interviews with my own students, deans of engineering schools and engineers in the practice of their profession. The results of these studies are definite and specific.

Death Of Charles E. Hearst

James Hearst Documents

An article from the Cedar Falls daily record reporting on the death of Charles E. Hearst, the father of James Hearst.

Some Notes On The Religion Of The Indians, Albert B. Reagan

Proceedings of the Iowa Academy of Science

To a great extent religion determines the advancement that any people makes, and the Indian was no exception in this connection. The writer wishes to explain that he is to deal only with our Indians as found by the Europeans following the discovery by Columbus, and hence is not called on to consider or discuss the claims of the higher systems of religion, and consequently all special questions, such as, the inspiration and infallibility of the Bible, are entirely foreign to his purpose. He is here presenting the facts as found by him and other scientists, leaving the conclusions for …

The Alumnus, V19n1, January 1935, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Chicago Alumni Unit Holds Annual Meeting
-- "Democracy is Deathless," Declares Dr. Abbott
-- Help Wanted - Locating Alumni, Class of 1910
-- Alumni - Faculty Active in Iowa School Conventions
-- Design and Beauty Stressed in Manual Arts
-- Four Whose Lives Were Close to Campus Affairs, Taken By Death During Fall Term
-- Teachers College Joins North Central Conference
-- Reconstruction of Entire Team Faces Court Coach
-- Gridders Set Field Record - Roll Up 101 Points
-- Alumni News
-- Marriages
-- Births
-- Deaths
-- Just To Show That If You'll Send …

The Address Of The President: This Changing World, Edward Bartow

Proceedings of the Iowa Academy of Science

In this address it is my purpose to express some ideas concerning the Changing World of education, science and invention.

The Alumnus, V18n1, January 1934, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Here is the Third Group of Faculty Pictures...
-- Teaching
-- Art and Manual Arts
-- Physics and Chemistry
-- Latin, Green, and German
-- Romance Languages
-- Home Economics
-- Religion
-- "Forgotten School Unit" Presented at Reunion
-- Miss Lynam Heads Teachers' Association
-- Alumnus Returns After Thirty Years
-- Homecoming Registration Twice That of 1932
-- Alumni Roster Increased by Fall Graduation
-- News Items of the College
-- State Tournament to be Held at Teachers College
-- Seven Lettermen Return for Basketball
-- Six Gridders End Careers
-- Squad of Nineteen Reports …

Proceedings Of The Forty-Eighth Annual Meeting Of The Iowa Academy Of Science, Held At Des Moines, April 20 And 21, 1934: Minutes Of The 1934 Meeting; Staff & Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

A Comparison Of Different Types Of Glass Electrode For Determining The Ph Of Soils, Harold L. Dean, R. H. Walker

Proceedings of the Iowa Academy of Science

During the past decade the quinhydrone electrode has been used extensively for determining the hydrogen-ion concentration of soils. It is admirably adapted to the study of reaction in soils due to its simplicity and ease of operation, and to its accuracy in most soils. As is well known, however, its use is restricted to soils having a reaction less than pH 8.0 to 8.5, and to soils containing no oxidizing or reducing substances in sufficient concentration to affect the oxidation-reduction potential of the quinhydrone. In recent years a number of investigators, notably Karraker, McGeorge, Baver, and Heintze and Crowther, have …

A Short Study Of Barkhausen-Kurz Oscillators, L. F. Dytrt

Proceedings of the Iowa Academy of Science

In the field of ultra-short waves as used in radio communications, oscillators of the Barkhausen-Kurz type should play an important part. The wave-length of these is dependent on the potentials applied to the grid and plate, and on the magnitude of the filament current, and is only influenced to a small degree by the leads connected to the grid and plate electrodes. Since the oscillations are caused by a purely mechanical to and fro motion of electrons about the grid, they are somewhat weak. In order to study oscillators of this type, one was built in an attempt to confirm …

Boron-Iron Relationships In The Growth Of Tomato, W. E. Loomis, J. J. Wilson

Proceedings of the Iowa Academy of Science

7. Boron-iron relationships

The work of Sommer and Lipman and of Johnston and Dore indicates that boron is required for the growth of plants representing eight families. Their results suggest that boron in small quantities may be an essential element for all plants. Before such a conclusion can be fully established it will, of course, be necessary to grow all plant species under the exacting conditions required for the elimination of boron from the culture medium. In the meantime any data which indicate that boron has a specific and indispensable function in the growth of any plant should be of …

The Passenger Pigeon As A Former Iowa Bird, Philip A. Du Mont

Proceedings of the Iowa Academy of Science

The Passenger Pigeon (Ectopistes migratorius) is believed to have been the most abundant species of bird in the world. It formerly ranged, as a breeding bird, over all of the wooded areas east of the Rocky Mountains and from southern Canada to Kansas, Kentucky, and Pennsylvania. During the winter months the great hordes wandered as far south as the Gulf States in search of food.

The Alumnus, V16n2, April 1932, Iowa State Teachers College

The Alumnus

Inside This Issue:
-- Alumni Calendar of Events
-- Alumni Propose Revision of Constitution
-- Home and School to Change, Says Mr. Threlkeld
-- News Items of the College
-- Eight Lettermen Back In Uniform for Baseball
-- Basketball Squad Wins Ten Games, Loses Six
-- Sixty Trackmen Drilling for Kansas Relays
-- Prospects Bright For Coming Grid Season
-- Purple Matmen Down Four Big Ten Teams
-- Alumni News
-- Marriages
-- Births
-- Deaths

Projects In Physics

Science Bulletin

The following list of Physics projects is recommended by the School Nature League sponsored by the American Museum of Natural History.

Club Programs Built Around The Lives And Contributions Of Great Men

Science Bulletin

Club programs built around the lives and contributions of great men of science can be made quite worth while and successful.

The Project In Chemistry, Donald D. Pettit

Science Bulletin

Some time ago the writer became convinced that the typical presentation of high school chemistry left many things to be desired, especially with that group who are completing their scholastic work with their high school diploma. As a rule they are leaving school pretty thoroughly disgusted with class work in general, and, although they had originally intended to continue in school as evidenced by their election of chemistry, they find that the prospect offers no allure. In many cases I am afraid that the course in chemistry helped to turn them from further scholastic endeavor. In order to furnish some …

In Memoriam: George Luther Smith; Henry Albert; D. S. Fairchild; George Bennett, James H. Lees, L. H. Pammel, Florence Sinclair Chapin

Proceedings of the Iowa Academy of Science

No abstract provided.