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Show As to Sneezing. Why should a person sneeze? v"M does almost every one bellev that to sneeze la to catch cold? Sneezing Is an explosive expulsion of air through th naal passages and mouth; but what causes It and what are Its results? It increases the circulation - It clears th- head. When you sneeze alway? hold jour head straight In front. Don't twist It to the left or right. Never enceze over your shoulder, lion ar liable to burst a blood vessel. Some aay that sitting In a d.-aft will cause sneezing. In former days It was a very polite custom to take snuff to .encourage n sneeze. Mee had their bejeweled sn"ff boxes and carried their handkerchiefs In their cuffs No doubt a sneeze was originally designed s to expel irritating materials froro tb upper air passages. In the act powerful expiratory effort is made. th vocal cords are kept shut till the, pressure pres-sure In the chest, has risen high, and air is then suddenly allowed to escao ) upward, being directed Into the b3c4f f of the nose by the soft palate. j .1 |