Even what are known as common colds are probably due chiefly to microbic infection aided by a chill, just as in the case of pneumonia.
He insisted that fresh, cold air was not the cause of colds, and preached zealously the " gospel of ventilation."
Saltmaking is by no means an unhealthy trade, some slight soreness of the eyes being the only affection sometimes complained of; indeed the atmosphere of steam saturated with salt in which the workmen live seems specially preservative against colds, rheumatism, neuralgia, &c.
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