GREGG] THE SKIX 303 



(c) To bring home to each individual pupil the fact and re- 

 sults of this skin-surface decay, each pupil needs to be placed 

 in some such apparatus as these shown in the figures below. 



Let each pupil remain with his body in the enclosure for 

 ten or fifteen minutes, his head meantime exposed to fresh aif. 

 Now on getting out of the apparatus, he must be made aware 

 of the odor of the air that stood about his body and thus he has 

 opportunity to know that however recently he may have bathed, 

 decay still goes on. 



B. Hygiexic Questions and Coxclusioxs. 



W'hat is the character of the odor of decaying stuffs generally ? 

 What do you suppose is the chief reason why the air of poorly 

 ventilated schoolrooms smells bad? Is there any diflference in 

 the odor of a church after a Friday evening service and after 

 a Sunday morning service where the usual American bathing 

 custom prevails? What is one reason why inhabited rooms have 

 to be ventilated? What is the primary reason why you and I 

 should bathe? Some of us who are older were taught that we 

 need to bathe in order to "keep the pores of the skin open," but 

 you and I know that the hands may be ever so dirty and sweat 

 will still come out of them, so you are right in thinking that we 

 bathe primarily to keep clean, and thus reduce germ activity 

 and offensiveness to our neighbors through bad body odors. 



^\'hich is better, to use strong perfumes and thus obscure 

 the odor, or to keep as clean as we can and thus reduce the 

 odor? Are there other reasons why we should bathe? How 

 often do you think one needs to bathe? What time of day would 

 be the best for one who has to work amid dirty surroundings? 

 What time of day is best for other people? What besides clean- 

 liness is to be gained by taking a short cold bath every morning? 

 Let us try this a while and see what happens. Who will agree 

 with me to do it? 



C. Some Foi.low-up Studies. 



Following these inductive studies the pupils may be sent to 

 the simpler text books on hygiene for a study of methods of 

 bathing, etc., etc. 



The apparatus figured in this article may be used very ad- 

 vantageously and ver>' impressively for a further study of the 

 need for ventilation in inhabited rooms, provided the pupils are 

 old enough to appreciate it. Let each pupil, taking a fan into 

 the "sweat-box" with him, remain in the box till he gets up a 



