Show children a 8 working hours important physiological expert ments merits have haie been made in russia to test the endurance of school children the results prove e that in the lower foul classes study may be continued for a period not exceeding twenty two or twenty seven hours per week bu but t that excessive fatigue results from 1 longer continuance ot of brain work this time tor for teaching these classes has bee been n fixed by the latest order ot of the ministry ot of public in it Is urged however that this shou should id be the outside limit and that no lessons should be studied at home |