Boys' Backs
نویسنده
چکیده
an unimportant amount of time bending over his desk, so that bad positions have not the opportunity of making more or less "staying" faults. But at this time a beginning may be made, either for good or bad. The boy may. be trained to sit correctly at his seat, especially when writing or drawing. lie may be trained to read with his book held before his eyes, not with the book flat upon the desk. And here it might appropriately be remarked that a simple, inexpensive contrivance could easily be furnished with each desk, which would hold books in a proper position while being studied. Then the boy may be trained to take a correct position when standing, with his weight balanced evenly upon both feet, and not upon one foot, with the other either crossed over, or moved
منابع مشابه
Sunburn associated with increased number of nevi in darker as well as lighter skinned adolescents of northern European descent.
The associations of sun exposure, sunburn, skin color, and other constitutional characteristics with the density of nevi (2 mm or more in diameter) were assessed in a study of 410 secondary school children ages 14-15 years in Tasmania, Australia. Skin color was estimated by using a chromameter that measures across the visible light spectrum (400-700 nm). Skin color and lifetime history of sunbu...
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