Show children s woj alna hours important physiological experiments hae been made in russia to test the endurance of school children the results prove that in the lower tou classes study may be continued for period not exceeding twenty two or anty seven hours per week but that excessive results from longer continuance of brain work this time or teaching these classes has bee fixed by the latest order ot the ministry ot e in it Is urged however that this should be the outside limit and that no lessons should be studied at home |