OCR Text |
Show OZONE OF A LIBRARY. Chicago has Installed an o?."no apparatus ap-paratus for the sterilization of tho air ch dilating in the public library. There Is a supply ol over it". Owl cubic feet a minute, but in ppite of this th ulr In tbe reading room has not been fresh. Since the ozone apparatus j flrft put In last summer, however, Vnts show that besides antlceptlc odd ! germicidal qualities there has hi ' a reduction of five percent In the bn- i midlty of tho room Twontyieth Ce-n- ' tury Magazine. |