School Hygiene |
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According accordingly ascertained back-rest baryte become Berlin blackboard boys brain Breslau Burgerstein carbonic acid cent class-rooms cleaning Cohn color conjunctiva defect degree of myopia disease dust eight especially examination eyes fact fatigue figures floor German give glass gymnasia gymnasiasts gymnasium gymnastics Hamburg hand headache hearing heating higher institutions hygiene hypermetropia illumination increase Königsberg latter Leipzig Leop less lessons Lickroth light lower lungs measles membrane ment mental meters minus distance Moreover movable MOVABLE SEATS myopia nasia nervous normal period pharynx possible pressure produced Prussia pupils real-school recesses recitations reflector rest school children school desk school hygiene school-room Schulen scoliosis seat bones singing slate stoves sufficient Tauberbischofsheim teachers temperature tion trachoma tube tympanic membrane upper classes usually vacations ventilation Vienna walls writing Würtemberg Zeitschrift für Schulgesundheitspflege см