. Dr. Evans' How to keep well; . ad succeeded in raisingthe steam pressure in the boilerfrom five pounds to fifteen, withsteam blowing out of the safetyvalve at the rate of forty milesan hour! The janitor expostulatedthat it was not possible for himto heat the entire landscape sur-rounding the school building, butthat if instructions were giventeachers as to the length of timewindows should be left open andsome restriction made as to whenthey might be opened, he wouldstill undertake to warm the build-ings, if the supply of coal did notgive out, and he would do it withfive pounds of steam. Is i
. Dr. Evans' How to keep well; . ad succeeded in raisingthe steam pressure in the boilerfrom five pounds to fifteen, withsteam blowing out of the safetyvalve at the rate of forty milesan hour! The janitor expostulatedthat it was not possible for himto heat the entire landscape sur-rounding the school building, butthat if instructions were giventeachers as to the length of timewindows should be left open andsome restriction made as to whenthey might be opened, he wouldstill undertake to warm the build-ings, if the supply of coal did notgive out, and he would do it withfive pounds of steam. Is it not afact that the demand for freshair which we read about so much,and some people talk about all thetime, is overdone? People whoknow something about physicsknow that the tendency of heatto go upward will prevent theproper warming of a room if thewindows are opened for fifteenminutes every half hour or so. Ifyou can, please tell us how oftenand for how long a time windowsshould be opened in a room hold-ing, say, forty •^ Reply.—The length of timewill depend on the wind and thetemperature. Three to five min-utes three or four times a day isample. It is best to have theseperiods come when the childrenare at recess. The temperature when the chil-dren are in the room should be68° F. When the children come in from play the temperature should be60°; fifteen minutes later it should be 68°. Cold school rooms should havea temperature of 55°. The windows in such rooms should be wide open. Dept. of Public Instruction, Springfield, 515.—Single-Flue Ventilation. 1268 HOSPITALS—SCHOOLS It is quite evident that in the school concerning which W. B. writesnobody has made any observations or given much thought to either heatingor ventilating. In that, however, this school is not peculiar. Help for Teachers Nerves.—E. writes: How would you preventnervous prostration, if forced to breathe continually the contaminated airof a public school kindergarten, and have t
Size: 928px × 2693px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecthygiene, booksubjectm
