The commoner diseases of the eye : how to detect and how to treat them . Adjustable Seat and Desk Showing Their ProperRelative Arrangement. or blue. Risley, our chief American authorityon this subject, gives the following dimensions ofthe ideal school room: Length of room 32 feel Width of room 24 feet Height of ceiling 15 feet Window space (linear measure-ment) 24 feet THE EYESIGHT.—HYGIENE 1547 From floor to window-sills (beveled) 3 feet Height of windows II feet The room accommodates 45 pupils, giving 256cubic feet to each. The walls and ceilings as wellas the woodwork should be of the same
The commoner diseases of the eye : how to detect and how to treat them . Adjustable Seat and Desk Showing Their ProperRelative Arrangement. or blue. Risley, our chief American authorityon this subject, gives the following dimensions ofthe ideal school room: Length of room 32 feel Width of room 24 feet Height of ceiling 15 feet Window space (linear measure-ment) 24 feet THE EYESIGHT.—HYGIENE 1547 From floor to window-sills (beveled) 3 feet Height of windows II feet The room accommodates 45 pupils, giving 256cubic feet to each. The walls and ceilings as wellas the woodwork should be of the same softly. Proper Position of Student. The pelvis is supported by the forward curve in the back of the seat. reflecting colors as the window shades. Thedesks should be adjusted to the individual needsof the pupil and should be chosen with due re-gard to his comfort; the restless and uncomfort- 848 COMMONER DISEASES OF THE EYE able pupil works the must mischief. If the seatis too high the childs feet are suspended in mid-air; if the desk is too high the elbows cannotrest without curving his spine out of shape, andthe eye work is brought too near; if too low hestoops over bis work, compresses the veins ofhis neck, brings on cerebral congestion and be-comes, in addition, round shouldered.
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