JAMA. 1935;105(11):886-887. doi:10.1001/jama.1935.02760370042017.
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The furor and the clangor of modern life sound a note far different from the tones heard by the people of previous centuries. We think of ancient man as living in an atmosphere of quietude with only the songs of the birds, the hum of the bee, the murmur of the brook and the occasional vocalization of wild animals impinging on his tympanum. Yet no doubt in the middle ages, when men strutted about in mail armor and beat on shields with their swords, the apparatus of hearing must have had some alarming sensations. Nowadays the shrieking of train and steamboat whistles, the rumble of the wheels of street cars, the sirens of police motorcycles, fire apparatus and street car, gas and electric repair trucks, the tooting and fluting of motor horns and the programs emanating from innumerable radio devices tend to produce a concatenation of sounds beyond anything that


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