 | 1875 - عدد الصفحات: 442
...labor requiring the exercise of vision of minute objects, that the worker should rise from his task no and then, take a few deep inspirations with closed...and forward, and if possible, step to a window or into the open air, if only for a moment. Two desks or tables in a room are valuable for a student ;... | |
 | 1875 - عدد الصفحات: 780
...temperature of the lower part of the room is apt to be 10° or 1-5° lower than that of the upper. " It is indispensable in all forms of labor requiring the exercise of vision of minute objects, that the worker should rise from his task now and then, take a few deep inspirations... | |
 | 1876 - عدد الصفحات: 242
...the temperature of the lower part of the room is apt to be 10 or 15° lower than that of the upper. It is indispensable, in all forms of labor requiring the exercise of vision or minute objects, that the worker should rise from his task now and then, take a few deep inspirations... | |
 | Hugo Ziemssen - 1879 - عدد الصفحات: 724
...15° lower than that of the upper — a condition which implies improper arrangements for heating. It is indispensable, in all forms of labor requiring...and forward, and, if possible, step to a window or into the open air, if only for a moment. All this presupposes good health and discretion. Two desks... | |
 | South Carolina State Board of Health - 1881 - عدد الصفحات: 256
...15° lower than that of the upper — a condition which implies improper arrangements for heating. "It is indispensable in all forms of labor requiring...arms backward and forward, and, if possible, step to the window or into the open air, if only for a moment. All this presupposes good health and discretion.... | |
 | Ezra Mundy Hunt - 1886 - عدد الصفحات: 396
...advised to be used for a while; (m) never play tricks with the eyes, as squinting or rolling them, (n) The eyes are often troublesome when the stomach is...and forward, and if possible step to a window, or into the open air, if only for a moment." 32. While the chief danger to children is from myopia, or... | |
 | Massachusetts. Board of Education - 1879 - عدد الصفحات: 400
...15° lower than that of the upper, — a condition which implies improper arrangements for heating. It is indispensable, in all forms of labor requiring the exercise of vision on minute objects, th.it the worker should rise from his task now and then, take a few deep inspirations with closed mouth,... | |
 | California. Legislature - 1875 - عدد الصفحات: 1026
...the lower part of the room is apt to be ten degrees or fifteen degrees lower than that of the upper. "It is indispensable, in all forms of labor requiring...objects, that the worker should rise from his task novr and then, take a few deep inspirations with closed mouth, stretch the frame out into the most... | |
 | 1875 - عدد الصفحات: 648
...What form of exercise is best for a seamstress, who sits many hours daily over her work ': ANS.— It is indispensable in all forms of labor requiring...on minute objects, that the worker should rise from the task now and then, take a few deep inspirations with closed mouth, stretch the frame out into the... | |
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It is indispensable, in all forms of labor requiring the exercise of vision on minute objects, that the worker should rise from his task now and then, take a few deep inspirations with closed mouth, stretch the frame out into the most erect posture, throw... 