The so-called present high standard of living, which contrasts so markedly with that of a generation ago, depends for its maintenance on circumstances arising in large scale production and standardization. Perhaps no more striking characteristic of modern industry can be mentioned than its gradually developing independence of nature. It is only by the assurance of dependable uniformity in supply of raw material, in transportation and in mechanical power that quantity production with the net gain to the consumer has been made possible. One of the factors of large importance to many industrial processes is grouped under the term "atmospheric conditions." In a recent account Lindsay1 has described the rise of the new ventilation engineering and has pointed out the wide application already made of this specialty in a variety of industries.
The temperature, moisture and movement of air are of considerable importance in many manufacturing processes; in the past,
MANUFACTURED WEATHER. JAMA. 1929;93(1):37–38. doi:10.1001/jama.1929.02710010043014
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