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AN EXPERIMENT WITH OZONE IN SCHOOL VENTILATION

AN EXPERIMENT WITH OZONE IN SCHOOL VENTILATION The American Journal of Public Health Physical records, including measurements of air volumes, temperatures and humidities; were kept. Physiological observations included bodily temperatures and blood pressures. Psychological tests, consisting of division, substitution and motor tests, were made. The pupils were examined at the beginning and at the end of a three weeks' run, each time the averages of three days' observations being taken. The results of the study indicate that there was no significant difference in the physical or mental progress of the two groups of pupils. Thephysiological examinations, although performed by a competent physician, were insufficient in scope and proved nothing. The psychological tests, however, were carefully analyzed and found to be well suited for an experiment of this character. The problems in short division involved a high type of selective thinking and memory processes. The substitution tests were partly mental and partly motor. The motor tests consisted of a movement of the index finger, the number of movements being registered in a specially constructed ergometer. The work done in these tests was examined with reference to total amount, rate of improvement and rate of fatigue, and in all respects the work of the test group showed http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png American Journal of Public Health American Public Health Association

AN EXPERIMENT WITH OZONE IN SCHOOL VENTILATION

Frederic Bass
American Journal of Public Health , Volume 3 (11) – Nov 1, 1913
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Publisher
American Public Health Association
Copyright
Copyright © by the American Public Health Association
ISSN
0090-0036
eISSN
1541-0048
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Abstract

The American Journal of Public Health Physical records, including measurements of air volumes, temperatures and humidities; were kept. Physiological observations included bodily temperatures and blood pressures. Psychological tests, consisting of division, substitution and motor tests, were made. The pupils were examined at the beginning and at the end of a three weeks' run, each time the averages of three days' observations being taken. The results of the study indicate that there was no significant difference in the physical or mental progress of the two groups of pupils. Thephysiological examinations, although performed by a competent physician, were insufficient in scope and proved nothing. The psychological tests, however, were carefully analyzed and found to be well suited for an experiment of this character. The problems in short division involved a high type of selective thinking and memory processes. The substitution tests were partly mental and partly motor. The motor tests consisted of a movement of the index finger, the number of movements being registered in a specially constructed ergometer. The work done in these tests was examined with reference to total amount, rate of improvement and rate of fatigue, and in all respects the work of the test group showed

Journal

American Journal of Public Health – American Public Health Association

Published: Nov 1, 1913

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