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Show f- V I YOUR HEALTH J BY DR. R H. BISHOP. ; vim: N'OSE Defective drainage and ventilation of the upper air passages In the nose Is ono of the factors rf causing colds. The normal healthy nasal passages should be larjfe enough to allow free entrance of all ?h air 1 1 viircd by a person in breathing, whether at rest or during exertion. In the latter case, fortunately, the tissues have the power of contracting and thus making the passages larger. The Inner wall of ech nasal passage pas-sage Is the septum or partition and Is mo,(Je of bone and cartilage. I ioi.i the outer wall of each passage project pro-ject two prominent, bony, curved bodies, the turbinates. These turbinate bodies ne irregular In size and shape They add n great deal to the surface over which the Rjr passes. In them are partly located locat-ed the nerves of -wnol!. The ventilation or free passage of air through the ivsc and In and out bl Ms cavities may be diminished or destroyed bs twists curvatures and folding of the septum of by bony or cartilaginous growths projecting into these cavities, or by overgrowth of the adenoids or tumors or menbranous thickness of some soil Sued qb ructions in nasal ventilation ventila-tion prevent proper evaporation of the mucus. Consequently this accumulates accumu-lates In masses and drops into the I throat or is Mow n out by the person ' frequently. I These conditions produce all the symptoms of a chronic cold and they invite the onset of more acute aliments ali-ments f'-oui various infections, since germs are apt to grow rapidly In such spaces full of abnormal secieta-tton. secieta-tton. r, n |