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Test 208: Caterpiller Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 201: Cletrac Model 25, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 203: Caterpiller Model 25, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 204: Caterpiller Model 50, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 207: Caterpiller Model 15, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 209: Caterpiller Model 65, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 210: Mccormick-Deering Model W 30, Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

Test 211: Mccormick-Deering Model T-40 "Tractractor", Nebraska Tractor Test Lab

Nebraska Tractor Tests

All tractors tested at the Nebraska Tractor Test Laboratory were certified by their manufacturers as being stock model machines, conforming to specifications filed with the application for test. No special or high-test fuels were used except as recommended by the manufacturer as necessary.

All results within the official tractor test report were actually attained in tests and are without correction or allowances for friction, temperature, altitude, etc. The results were initially accomplished with the tractor in charge of skilled operators employed by the University.

Unless otherwise noted, each tractor was apparently in good condition at the end of the testing …

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.

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.

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 …

Phantom Ringnecks, Roy L. Abbott

Science Bulletin

Now the ring-necked pheasant is a big bird; he is about the size of a well-fledged leghorn rooster, weighs perhaps three and one-half to four pounds, and, including his long tail feathers, stretches easily two feet or more in length. Moreover, Nature fairly outdid herself in beautifying the ringneck; he is a perfectly amazing combination of green and red, of white and gold and bronze. His mate, on the other hand, is about the color of a prairie chicken, severely plain, modest and retiring.

Editor And Advisory Board

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Science Bulletin, Vol.4 No.3, November 1931 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

Are You Healthy?, H. Earl Rath

Science Bulletin

Most authors of texts on hygiene have presented some sort of an ideal towards which each individual should aim. All of them have merit, but the present article is based largely (with a few modifications) on the eight points of "The Health Ideal" as set forth in the "College Text Book of Hygiene" by Smiley and Gould.

Science Bulletin, Vol.4 No.2, October 1931 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

First Aid In The Laboratory, O. B. Read

Science Bulletin

From the nature of the work carried on in the laboratory one can not always control the results obtained. Accidents are liable to occur at any time. They may arise from many causes among which are incorrect reading of experiments by students, carelessness in obtaining material, defective apparatus, and poor manipulation. The kind of accidents occurring frequently are cuts by broken glass; burns caused by fires, acids, and alkalies; explosions; injuries by breathing poisonous gases; and fainting.