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The Fauna Of The Chemung Formation Of Southwestern New York, H. Donald Curry Jan 1930

The Fauna Of The Chemung Formation Of Southwestern New York, H. Donald Curry

Proceedings of the Iowa Academy of Science

The Randolph quadrangle is located just north of the Pennsylvania state line in the southern part of Cattaraugus County, in southwestern New York. During the summer of 1929, the writer spent six weeks in the field in the southern part of that quadrangle, and this paper is based upon the work done and the fossils collected at that time.

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Skyshine And Sunshine At Ames, William Kunerth, Russel D. Miller Jan 1930

Skyshine And Sunshine At Ames, William Kunerth, Russel D. Miller

Proceedings of the Iowa Academy of Science

As an initial step toward determining the amount of ultra violet light in skyshine and in sunshine it was deemed desirable to determine the ratio of skyshine to sunshine in the visible spectrum. Accordingly readings were taken on a horizontal plane on top of a tall building, once with the test plate of a Macbeth illuminometer exposed to the entire dome of the heavens including the sun and again when the sun was blocked out by an opaque disk. Observations were made every hour on perfectly clear days only.

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A Statistical Test Of Experimental Technique, George W. Snedecor Jan 1930

A Statistical Test Of Experimental Technique, George W. Snedecor

Proceedings of the Iowa Academy of Science

The phrase "experimental technique" is used in a largely inclusive sense in this paper. A more precise title would be "A Statistical Test of Homogeneity." The reason for the more flexible phrase will be apparent, I trust, as the argument progresses.

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Two Cases Of Abnormal Incisors In White Rats, J. E. Guthrie Jan 1930

Two Cases Of Abnormal Incisors In White Rats, J. E. Guthrie

Proceedings of the Iowa Academy of Science

In some class work done in the Department of Zoology and Entomology recently several white rats were used. These animals were procured from the Chemistry Section of the Iowa Experiment Station. The rats were all adult males and had been fed mainly on a diet of soft food.

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Notes On Vertebrates Of Iowa Prairies, Geroge O. Hendrickson Jan 1930

Notes On Vertebrates Of Iowa Prairies, Geroge O. Hendrickson

Proceedings of the Iowa Academy of Science

During the past five years while the author was engaged primarily in a survey of insects his attention has been drawn occasionally to the vertebrate inhabitants of prairies of Iowa. One of the most frequently visited tracts is four acres of upland two miles north of Ames.

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Some Home-Made Teaching Models, J. E. Guthrie Jan 1930

Some Home-Made Teaching Models, J. E. Guthrie

Proceedings of the Iowa Academy of Science

Models are of great value in teaching certain biological subjects. Nearly every teacher feels the need of certain models not obtainable from dealers. With practice and a fair degree of skill, these may be made for the occasion.

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Comparative Growths Of Infusoria-Free And Normal Lambs, E. R. Becker, R. E. Everett Jan 1930

Comparative Growths Of Infusoria-Free And Normal Lambs, E. R. Becker, R. E. Everett

Proceedings of the Iowa Academy of Science

The digestive tracts of all ruminants are normally inhabited by Protozoa. It has been held by some that these are harmful; by others that they may be helpful in the digestion of cellulose and protein. Experiments in defaunating lambs by the use of copper sulphate indicated that the infusoria are not of importance, nor necessary for normal digestion in lambs.

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Proceedings Of The Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, Held At Ames, May 2 And 3, 1930: Minutes Of The Meeting; Staff & Committee Reports Jan 1930

Proceedings Of The Forty-Fourth Annual Meeting Of The Iowa Academy Of Science, Held At Ames, May 2 And 3, 1930: Minutes Of The Meeting; Staff & Committee Reports

Proceedings of the Iowa Academy of Science

No abstract provided.

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Some Observations On The Relation Of The Composition Of The Diet To Lactation, P. D. Wilkinson, V. E. Nelson Jan 1930

Some Observations On The Relation Of The Composition Of The Diet To Lactation, P. D. Wilkinson, V. E. Nelson

Proceedings of the Iowa Academy of Science

The previous paper reports a series of experiments in which three different varieties of soy beans were fed to rats at levels from ten to seventy-three and three tenths percent as the sole source of vitamins B and G. Normal growth was observed on all the levels of each variety of soy bean. The high mortality of the adults on the ten percent level of Virginia soy bean indicated a border line supply of vitamins B and G. Satisfactory lactation was not obtained on any of the experiments where soy beans were included in the diet as the only sources …

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The Air We Breathe, S. F. Hersey Dec 1929

The Air We Breathe, S. F. Hersey

Science Bulletin

In an examination of recent texts in general science one is impressed by the place given to a discussion and study of air in its various phases and applications. The expression "air minded" does not apply in this connection, but perhaps it holds true that a great amount of interest is always developed in pupils whenever we introduce the subject.

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Exhibits As An Aid In Teaching, O. B. Read Dec 1929

Exhibits As An Aid In Teaching, O. B. Read

Science Bulletin

Complaint is often made that science subjects are difficult to teach. Many feel they are so abstract that there is nothing tangible with which to start. Since most of our industrial products are now very closely controlled by physical principles and chemical processes, it ought not to be difficult in the study of these subjects to arouse interest by calling attention to their uses in the industrial process.

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Science Bulletin, Vol.2 No.4, December 1929 [Complete Issue] Dec 1929

Science Bulletin, Vol.2 No.4, December 1929 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Living Material In The Laboratory, O. R. Clark Dec 1929

Living Material In The Laboratory, O. R. Clark

Science Bulletin

Living plants and animals serve as valuable aids in stimulating interest in the biology course and, during that part of the year when field trips are impossible, provide material for the study of habits and the relation of organisms to their environment. Laboratory conditions are of course artificial but they should be made as nearly natural as it is possible to make them.

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Title - Masthead Dec 1929

Title - Masthead

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Science Bulletin, Vol.2 No.3, November 1929 [Complete Issue] Nov 1929

Science Bulletin, Vol.2 No.3, November 1929 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Heat, L. Begeman Nov 1929

Heat, L. Begeman

Science Bulletin

The subject of heat as discussed in most texts in general science involves only the most elementary concepts as regards its theory. As a rule the following topics are the leading ones: - sources of heat, thermometry, methods of heat transmission, effect of heat, and a number of the common everyday practical applications of heat.

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Insects And Man, Roy L. Abbott Nov 1929

Insects And Man, Roy L. Abbott

Science Bulletin

Biologically speaking, insects may be called a highly successful group, and much of this success is due to their adaptability to the conditions of their environment. They are found everywhere, and eat almost everything. All of the large groups of insects are world-wide in their distribution, though the most widely distributed are the beetles.

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The Simple Machines, L. Begeman Nov 1929

The Simple Machines, L. Begeman

Science Bulletin

With reference to a pulley system, the work equation is clearly discerned in its practical operation. In presenting the pulley, the writer uses a rectangular frame about two feet high and three feet wide. A number of hooks are screwed into the top cross piece of the frame. With such a device a number of different pulley combinations can be shown at one time.

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The Purple Pen, Volume 2, Number 1, November 1929 [Download Entire Issue] Nov 1929

The Purple Pen, Volume 2, Number 1, November 1929 [Download Entire Issue]

Purple Pen

No abstract provided.

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Some Illogical Logic, Richard Shane Nov 1929

Some Illogical Logic, Richard Shane

Purple Pen

No abstract provided.

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Science Minded, Harold E. Murphy Nov 1929

Science Minded, Harold E. Murphy

Science Bulletin

When we are trying to be "air minded " and "peace minded" why not go a little further and be 'science minded"? The aeronautic field has as its champion, Colonel Lindberg; the Peace Federation has as its champion, Ishbell McDonald; but where is the youthful champion of the field of chemical science? In this day of scientific advancement, a champion is surely needed to bring t h e achievement of chemical science to the people. Someone has said, "Science is the Creator's chest of tools. Human progress is man's learning to use these tools."

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Mechanics Of Solids, L. Begeman Sep 1929

Mechanics Of Solids, L. Begeman

Science Bulletin

According to the traditional arrangement of subject matter in textbooks on high school physics, it is customary to introduce the treatment of mechanics of so-lids by beginning with the subject of motion, force, and Newton's laws of motion. This at once leads the immature student into a labyrinth of abstract conceptions that is generally disheartening. It would show better judgment on the part of the teacher to begin the subject of mechanics with material that is more concrete to the student and which is continually before him in his environment.

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Last Year Science Bulletin Made Its Appearance Sep 1929

Last Year Science Bulletin Made Its Appearance

Science Bulletin

Last year Science Bulletin made its appearance. Your response was such that we feel encouraged to continue, and after one year's experience we should be able to make the bulletin more of a real service bulletin to the teachers in the field. We invite your suggestions and criticisms. While we all like commendations, yet we realize that unfavorable criticism is sometimes most helpful. Let us have your "brickbats" as well as your "bouquets."

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The Use Of The Football Squad As Laboratory Material For Physiology, H. Earl Rath Sep 1929

The Use Of The Football Squad As Laboratory Material For Physiology, H. Earl Rath

Science Bulletin

As school is getting under way for the new school year, the teacher of physiology or hygiene is probably busily engaged in looking over the laboratory equipment to see what can be found to demonstrate the functioning of the human body. In all probability many instructors will decide that there is not enough material on hand to justify an attempt at demonstrations, while regular laboratory work will be considered out of the question.

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Science Bulletin, Vol.2 No.1, September 1929 [Complete Issue] Sep 1929

Science Bulletin, Vol.2 No.1, September 1929 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Insects And Man, Roy L. Abbott Sep 1929

Insects And Man, Roy L. Abbott

Science Bulletin

Mrs. Jiggs, in the cartoon, "Bringing up Father," frequently calls her husband an insect. This is a flagrant misuse of the term as an insect never has fewer nor more than six legs. It may be wingless as are the bedbugs, two winged as are all flies, or four winged as the grasshoppers, but no normal insect ever has more or less than six legs and by this one positive character you may know them.

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Collecting Specimens At Night, Roy L. Abbott May 1929

Collecting Specimens At Night, Roy L. Abbott

Science Bulletin

Many teachers of biology don’t realize how much valuable biological material may be collected after dark. In fact, certain specimens, as grasshoppers, earthworms, and various species of amphibia, are most easily captured then.

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Crystallization, L. Begeman May 1929

Crystallization, L. Begeman

Science Bulletin

One of the most interesting molecular phenomena in nature is known as crystallization. It is brought about in the arts of man and in nature by three methods. When a chemical salt, such as table salt, is dissolved in water and allowed to stand in a shallow dish until it dries, it will be observed that the solid residue appears as crystals. Those from common table salt will be cubical in form. However, every different salt will yield its own distinctly shaped crystal.

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Science Bulletin, Vol.1 No.7, May 1929 [Complete Issue] May 1929

Science Bulletin, Vol.1 No.7, May 1929 [Complete Issue]

Science Bulletin

A Service Bulletin for Teachers of High School Science.

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Introducing The Biology Course In The Classroom, Roy L. Abbott Mar 1929

Introducing The Biology Course In The Classroom, Roy L. Abbott

Science Bulletin

The success of any course in high school science often depends upon the interest aroused in it during the first days of its presentation. This interest is particularly easy to arouse in biology, chiefly, l suppose, because people are always interested in living things, or things that have been alive. Moreover, though he does not recognize it as such, nearly every pupil has considerable biological knowledge when he first comes to class, and it is this preliminary knowledge which can be made a strong entering wedge into his interest in the subject.

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