Show many colds caused by poor ventilation to find better preventive methods doctors in recent jears have been studying the common cold more carefully than ever and two authorities have summarized the supposed causes caused of this affliction under live headings chills and drafts conditions of 0 the weather irritation of the membrane on the breathing apparatus infection and bad ventilation the last Is regarded as the commonest of 0 all the causes as W warm arm stagnant air produces congestion and swelling in the mucous membrane which becomes covered with a thick secretion and affords a weak spot for germs to attack to in cool air this membrane remains taut and well moistened then in a poorly ventilated room cold currents of air are likely to strike the feet while the head Is exposed to the warm arm polluted upper atmosphere this Is just the reverse of what Is considered the ideal condition for health cool breezes blowing around the head the radiah heat of the sun and a warm ground to stand on exposure alone will not cause colds in healthy individuals vi the doctors declare arctic explorers fishermen and others who remain out of doors for long iong hours in stormy cold weather often seem immune from these disorder irritation of the hie mucous mem brao of the re rc pir pleatory atory pam passages es by dusts dusti arid and chemicals Is also a common cauze cause of colds popular magazine |