School Hygiene, Or, The Laws of Health in Relation to School Life

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D.C. Heath, 1889 - School hygiene - 143 pages
 

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Page 63 - Blimber's cultivation. Every description of Greek and Latin vegetable was got off the driest twigs of boys under the frostiest circumstances. Nature was of no consequence at all. No matter what a young gentleman was intended to bear, Doctor Blimber made him bear to pattern, somehow or other.
Page 65 - It is not the knowledge stored up as intellectual fat which is of value; but that which is turned into intellectual muscle.
Page 78 - ... 3. At about twelve and' a half years of age girls begin to grow faster than boys, and, during the fourteenth year, are about one inch taller than boys of the same age. " 4. At fourteen and a half years of age boys again become the taller, girls having at this period very nearly completed their growth, while boys continue to grow rapidly till nineteen years of age.
Page 108 - ... slightly blue-tinted, so as to soften the glare of the white page in reading. Colored glasses should not be too dark in tint, lest it require too much exertion to see clearly through them. In near-sight, as we have seen, the eye is too full, so that rays of light from a distance are brought to a focus before reaching the retina. (See Figure F.) The exercise of the accommodative or adjusting power of the eye is of no use, or even worse than useless, because, when brought into service, its function...
Page 63 - ... everything), suddenly left off blowing one day, and remained in the establishment a mere stalk. And people did say that the Doctor had rather overdone it with young Toots, and that when he began to have whiskers he left off having brains.
Page 78 - ... more than two years, both taller and heavier than boys at the same age, though before and after that period the reverse is the case. Table No. 3, giving the annual rates of growth, shows the same thing in a different way. Here we see, in the column of totals, that the greatest annual increase in height occurs for girls at 12 and for boys at 16 years of age, while the maximum increase in weight is for boys at the same age and for girls one year later than the maximum increase in height. Similar,...
Page 31 - ... same temperature as the external air. Such methods have, however, but a limited application in the northern United States. During a large portion of the year, in order to prevent dangerous draughts, the incoming air requires warming. When the external temperature reaches 60, or better still 65, the air may be freely admitted. Open windows are by far the best means of ventilation, and during the school recess all the windows should be thrown open, opposite windows if possible, or doors and...
Page 30 - ... temperature cause much more active movements of air, warm air floating to the top of cold air, as oil floats to the top of water. The air in a room is warmed by the inmates and by the stove, gas, or other source of artificial heat. Cold air tends to rush in from every opening, and, being heavier than warm air, falls toward the floor, producing a draught. The great problem of ventilation is to secure a sufficient interchange of air without causing draughts. The entrance of air at any temperature...
Page 113 - Cohn proposes that the type of ordinary journals should be 4 millimeters or \ inch in height, though M. Javal thinks it may be allowed to be 2 millimeters. The thickness of down and up strokes, the spaces between letters and words and between lines, and the length of lines all require attention. Letter-press derived from a worn-out fount gives an imperfect impression of the letters. The loops of a and e, of b dp g are apt to form a black spot ; long letters become broken, and fine up strokes are...
Page 13 - ... results, which in time tends to become persistent. If the desk is too low, the scholar has to bend too far over his work. A forward stoop and round shoulders are produced. The head becomes congested from being held so low, and there is a strong tendency toward the development of nearsightedness.

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