Show Cold Colds Headed Off Chlorinated air his has been used u d very successfully as a preventive of ot colds collIs and Ind lung troubles by the students ot of othe the chemistry division of or the University sity of ot Missouri 1 small amount ot of chlorIne is mixed Ith the air and an this Is sent Into the room through special I tors Bv By U this means the air Is purIfied as it enters the tIle room and ind the use of air outlets mikes makes It possible for the air to be changed as ns often otten as asIt asit asIt It Is thought by A decided Im Improvement provement pro ement has been noticed so fir far as the pre prevalence of or colds Is concerned among the students |