School and Industrial HygieneP. Blakiston, 1880 - 152ÆäÀÌÁö |
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... VII . CARE OF THE EYES VIII . SCHOOL - DESKS AND SEATS - IX . - A MODEL SCHOOL - ROOM • PAGE • 7 ¡¤ • 14 • 19 • 24 • 28 • • ¡¤ 34 48 64 ¡¤ 79 85 ¡¤ • 94 X. - VENTILATION AND HEATING XI . SITE , DRAINAGE , ETC. • M354643 1 *
... VII . CARE OF THE EYES VIII . SCHOOL - DESKS AND SEATS - IX . - A MODEL SCHOOL - ROOM • PAGE • 7 ¡¤ • 14 • 19 • 24 • 28 • • ¡¤ 34 48 64 ¡¤ 79 85 ¡¤ • 94 X. - VENTILATION AND HEATING XI . SITE , DRAINAGE , ETC. • M354643 1 *
37 ÆäÀÌÁö
... desks . According to Eulenberg , in 92 per cent . ( 276 ) of 300 cases , the curvature was also to the right . It is true that these curvatures are not always associated with public health , since they sometimes occur in a slight degree ...
... desks . According to Eulenberg , in 92 per cent . ( 276 ) of 300 cases , the curvature was also to the right . It is true that these curvatures are not always associated with public health , since they sometimes occur in a slight degree ...
51 ÆäÀÌÁö
... desk or seat , or poor light , and may be continued merely as a habit . And the degree of near - sight is easily over - estimated by those not able to apply the scientific tests of the professed oculist ; for in many cases there exists ...
... desk or seat , or poor light , and may be continued merely as a habit . And the degree of near - sight is easily over - estimated by those not able to apply the scientific tests of the professed oculist ; for in many cases there exists ...
53 ÆäÀÌÁö
... the eyes not allowed to approach nearer than fifteen inches in general to the book or slate . The proper shape and proportion of a desk which will facilitate the fulfilment of these requisitions will be described 5 * CARE OF THE EYES . 53.
... the eyes not allowed to approach nearer than fifteen inches in general to the book or slate . The proper shape and proportion of a desk which will facilitate the fulfilment of these requisitions will be described 5 * CARE OF THE EYES . 53.
63 ÆäÀÌÁö
... desks is productive of congestion and strain in continued study , which is highly prejudicial to sight ; this injury may be avoided easily , comfort- ably , and safely by the use of weak glasses . It is proper to warn teachers of the ...
... desks is productive of congestion and strain in continued study , which is highly prejudicial to sight ; this injury may be avoided easily , comfort- ably , and safely by the use of weak glasses . It is proper to warn teachers of the ...
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134 ÆäÀÌÁö - A child, young person, or woman, shall not be allowed to work between the fixed and traversing part of any self-acting machine while the machine is in motion by the action of steam, water, or other mechanical power.