32 SCHOOL SCIENCE AND MATHEMATICS 7. Why can’t a frog breathe if his mouth is open? 8. How is it possible for a whale, which is an air breathing animal, to remain under water for 45 minutes, as it sometimes does? 9. Why does a fish die if it is kept out of water for a sufficient length of time? 10. If a person in a mine is trapped by caving walls, should he remain as quiet as possible, or should he exert himself? Explain. 11. Before stratosphere balloonists begin their ascent from the earth, what procedure do they follow as an aid to their breathing? 12. Why are flowers and plants usually removed from a sickroom at night? 13. If the air contains about one-fifth oxygen, and oxygen is con- sidered healthful, would air containing five times as much oxygen be five times as healthful? Why? FILMS FOR MATHEMATICS TEACHERS As a special service to mathematics teachers interested in expanding their use of classroom motion pictures. Coronet Films has just prepared a special new catalog of their 16 mm pictures on mathematics. Films for all grade levels are included in the listing. Titles range from Lefs Count, designed for primary grades, through such senior high subjects as The Meaning of Pi, The Language of Mathematics, and The Language of Graphs. In addition to these basic mathematics films, many related titles, such as Federal Taxation, Fred Meets a Bank and Banks and Credit are included in the catalog. All these Coronet instructional films were produced under the personal super- vision of outstanding academic authorities who served as Educational Collabo- rators. Copies of the mathematics films catalog may be had free by writing: Dept. P, Coronet Films, Coronet Building, Chicago 1, Illinois. STRAY DOGS NEEDED FOR RESEARCH University of Wisconsin regents Saturday took action to eliminate the "un- necessary shortage" of dogs for teaching and research purposes in the University of Wisconsin Medical School. The regents requested the state attorney general to "take appropriate action to obtain compliance" with the state law requiring that the humane societies turn over stray dogs to the Medical Schools at the University of Wisconsin and Marquette university. In asking the regents to take action, Dr. H. M. Coon of the University hospital said that "the use of animals for teaching and research purposes by the medical schools of the country is an essential part of the education of doctors, and the provision of improved medical service for the citizens of the country." Dr. Coon pointed out the "advances that have come through this type of research," citing the work done with dogs which has resulted in saving the lives of blue-babies and other "cardiac cripples" and in saving the lives of diabetics. "These," he said, "are the two presently outstanding achievements which owe their adaptation for the sufferers from these conditions to the use of the research animals and especially dogs."

FILMS FOR MATHEMATICS TEACHERS

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32 SCHOOL SCIENCE AND MATHEMATICS

7. Why can’t a frog breathe if his mouth is open?8. How is it possible for a whale, which is an air breathing animal,

to remain under water for 45 minutes, as it sometimes does?9. Why does a fish die if it is kept out of water for a sufficient

length of time?10. If a person in a mine is trapped by caving walls, should he re-

main as quiet as possible, or should he exert himself? Explain.11. Before stratosphere balloonists begin their ascent from the

earth, what procedure do they follow as an aid to their breathing?12. Why are flowers and plants usually removed from a sickroom

at night?13. If the air contains about one-fifth oxygen, and oxygen is con-

sidered healthful, would air containing five times as much oxygen befive times as healthful? Why?

FILMS FOR MATHEMATICS TEACHERS

As a special service to mathematics teachers interested in expanding their useof classroom motion pictures. Coronet Films has just prepared a special newcatalog of their 16 mm pictures on mathematics.Films for all grade levels are included in the listing. Titles range from Lefs

Count, designed for primary grades, through such senior high subjects as TheMeaning of Pi, The Language of Mathematics, and The Language of Graphs.In addition to these basic mathematics films, many related titles, such as

Federal Taxation, Fred Meets a Bank and Banks and Credit are included in thecatalog.

All these Coronet instructional films were produced under the personal super-vision of outstanding academic authorities who served as Educational Collabo-rators. Copies of the mathematics films catalog may be had free by writing:Dept. P, Coronet Films, Coronet Building, Chicago 1, Illinois.

STRAY DOGS NEEDED FOR RESEARCH

University of Wisconsin regents Saturday took action to eliminate the "un-necessary shortage" of dogs for teaching and research purposes in the Universityof Wisconsin Medical School.The regents requested the state attorney general to "take appropriate action

to obtain compliance" with the state law requiring that the humane societiesturn over stray dogs to the Medical Schools at the University of Wisconsin andMarquette university.

In asking the regents to take action, Dr. H. M. Coon of the University hospitalsaid that "the use of animals for teaching and research purposes by the medicalschools of the country is an essential part of the education of doctors, and theprovision of improved medical service for the citizens of the country."

Dr. Coon pointed out the "advances that have come through this type of re-search," citing the work done with dogs which has resulted in saving the lives ofblue-babies and other "cardiac cripples" and in saving the lives of diabetics.

"These," he said, "are the two presently outstanding achievements which owetheir adaptation for the sufferers from these conditions to the use of the researchanimals and especially dogs."