School efficiency; a manual of modern school management . ost abundant, most accessible,and most delightful commodity with which school authoritiesare concerned — and the most carefully excluded. What is fresh air? l^y fresh mr-we mean that which isas nearly as possible like that outdoors on a fine, bracing,invigorating day. It is this for which the human machinehas become adapted in the course of its evolution and inwhich it functions to best advantage. Devisers of school-ventilating systems have been assuming that essentials ofgood air are a high and uniform temperature and freedomfrom all a
School efficiency; a manual of modern school management . ost abundant, most accessible,and most delightful commodity with which school authoritiesare concerned — and the most carefully excluded. What is fresh air? l^y fresh mr-we mean that which isas nearly as possible like that outdoors on a fine, bracing,invigorating day. It is this for which the human machinehas become adapted in the course of its evolution and inwhich it functions to best advantage. Devisers of school-ventilating systems have been assuming that essentials ofgood air are a high and uniform temperature and freedomfrom all appreciable currents, together with a low percent-age of carbon dioxide and impurities. Recent investigationshave shown, on the contrary, that schoolroom conditionscannot produce sufficient carbon dioxide or other substancesto be dangerous or to interfere materially with working effi-ciency, that high and uniform temperatures are undesirable,and that considerable motion in the atmosphere is particu-larly necessary. The ventilation problem is not one of.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherbostonnewyorketcgi
