Eyesight and school life . y are, however, more practical and easily•applied methods. It has , been suggested(Strasburg Medical Report) that small diamondtype should be able to be read at 12 inches distance. The wise man observes that there is a time to speak, and a time to keepsilence. One meets -with people iu the world, who seem never to have madethe last of these observations, fBishop Butler.) even by scholars furthest away from the , in some schools on the Continent scholarshave ceased to work when darkness was sufificientto prevent the reading of Snellens 2
Eyesight and school life . y are, however, more practical and easily•applied methods. It has , been suggested(Strasburg Medical Report) that small diamondtype should be able to be read at 12 inches distance. The wise man observes that there is a time to speak, and a time to keepsilence. One meets -with people iu the world, who seem never to have madethe last of these observations, fBishop Butler.) even by scholars furthest away from the , in some schools on the Continent scholarshave ceased to work when darkness was sufificientto prevent the reading of Snellens 20 type at 20feet.* The L printed here is of the size indicated. All study that can be done by children in day-light should be accomplished then, and not putoff till day has gone. No artificial lightingcan make up for daylight. When required,artificial light should be ample and steady, andshould come from a suitable direction. Anunsteady light is dazzling and fatiguing. Nor * Vide also Cohns Type, page 67. SCHOOL LIFE. 23. Fig. illumination ; light falling from the right and throwingshadow on the cop\ book. (Vide page 21 ) EYESIGHT AND SCHOOL LIFE. 25 should the illuminant be placed too near the eye,because the heat emitted is injurious and occasionsdiscomfort. The electric light is likely to giveus the best method of illumination for has been employed on the Continent, and is nowmade use of in some schools in England. Fuchstells us that in Liege the rooms used for drawingclasses were lighted by it—these were eveningclasses—and the light was, by an arrangement ofconcave mirrors, thrown up to the ceiling, andthus diffused equally through the room, and thesource of light was hidden. The light fell inequal degrees upon all the desks, was sufficient,and not dazzling. The electric light has a further advantage innot vitiating the air as gas and other illuminants,and this in rooms used for long periods, withlarge classes, is a matter of considerable moment. T
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