Synopses & Reviews
Synopsis
Excerpt from The Passenger Car Ventilation System of the Pennsylvania Railroad Company
The point which is being led up to, and which will be dis cussed in the next paragraph, is: How much air is actually required per car per hour in order to give satisfactory ventilation? Before taking up this question, however, there is another question that must be considered, and that is: How much carbonic acid do human beings give off per person per hour? A good many experiments have been made on this point by different investigators, It is found.
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