REVITALIZING DEVITALIZED CHILDREN. AN OPEN WINDOW EXPERIMENT: A COMPARISON BETWEEN THE PROGRESS OF PUPILS TAUGHT IN AN OPEN WINDOW CLASS-ROOM AND THAT OF THE PUPILS OF A PARALLEL GRADE TAUGHT IN AN ORDINARILY VENTILATED AND HEATED CLASS-ROOM IN THE SAME SCHOOL BUILDING.
Roach
W W
WW
4th & 5th Districts, Philadelphia.