Show MR DIR EDITOR in the last news new you stated that school rooms should be built high with both at the top and sides will you please to give the philosophy of this declaration why are not top ventilators rs sufficient ac an answer is solicited by A subscriber ANs ang answer well writ dropping all philosophic and chemic we will presume it understood by all that when we draw a portion of the air in eur our lungs the lungs lunga retain the life giving principle of that portion of the air aino alno so drawn to quicken the blood and fluids of our bodies and that portion which is not retained but thrown out of the lungs is dead in its nature and being lighter than the common air rises to the top of the room in public buildings such as lecture room rooms school houses ac where a great number of lungs are assembled nearly all the good properties of the atmosphere are soon received and retained by the langsand lun gsand where there are no room is soon filled with dead air and the inmates of the room begin to grow dull drowsy and inactive and fainting frequently follows till the individual i is removed to the fresh air from which the life giving principle is again imparted to the lungs and the fainting ceases whereas if fresh air was not admitted in such case cases fainting would continue and death follow A high room is a safety against such accidents acci as there is more space to contain air and the bad air can rise the higher from the occupants of the room during the heat ot of summer cummer and at all times when the surrounding atmosphere is warm enough for the comfort of the people without artificial heit beit a top ventilator is tee the th best and if the room be arched in the top of the arch then the dead air a ir can entirely leave the room as fast as it leaves the lungs and a pure healthy phere eliere alone is present but when the weather is so cold as to require a fire either in i a chimney or stove gide eide ventilators rs are the ifie best so that a gentle current of pure air may i pass into the room on one side sizie and a mixture e of pure and impure air may pass out on the other side the ventilators rs being located between the top of the windows and ceiling or between the stratas of the livin living and dead air air thus keeping the air sufficiently pure to make the room tolerably healthy and preserving in the room a good portion of the heat beat arising ansing d from the fire so that the whole hoie hole body may be comfortably warm if the ventilator be on the top when the room is heated by a fire the heat of the gire fire rises rapidly from the lower portions of th the atmosphere of the room and with the natural heat of the body unite unites with the dead and rising riling air and passes rapidly through the ventilator heating the head in its passage and ind leaving the feet and the lower extremities to suffer with the cold and when you have hive set during daring a cold evening in a heated room with a top ventilator ani meet with your jour companions at sitting the next day and enquire i for their health and they do not complain of a cold in the head as a geneal cenera genera thing you will not find our experience the doctors doctor say may ay keep your head coo cool and your feet warm but to do that in a heated room with top ventilators rs will require something like fur boots and ice caps |