. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. tive of serious and permanent evil. The bandy1 or bow legs are thus produced. What effect has moderate, regular labor upon the growing youth:131. What remark respecting the kind and amount of labor ? At what ageare the bones best fitted for labor ? 132. What effect has long-continuedexertions or positions on the bones of a child ? What is said of the requi-sitions of some teachers, who have the famed quiet schools ? 133. Whyshould not the child be induced to stand or walk, either naturally or art
. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. tive of serious and permanent evil. The bandy1 or bow legs are thus produced. What effect has moderate, regular labor upon the growing youth:131. What remark respecting the kind and amount of labor ? At what ageare the bones best fitted for labor ? 132. What effect has long-continuedexertions or positions on the bones of a child ? What is said of the requi-sitions of some teachers, who have the famed quiet schools ? 133. Whyshould not the child be induced to stand or walk, either naturally or artifi-cially, at too early an age ? HYGIENE OF THE BONES. 55 13 i. The benches or chairs for children in a school-roomshould be of such a height, as to permit the feet to rest on the the bench is so high as not to permit the feet to rest uponthe floor, the weight of the limbs below the knee may causethe flexible bone of the thigh to become curved. The childthus seated, is inclined to lean forward, contracting an injuri-ous and ungraceful habit. Again, when the feet are not sup- Fig. Fig. 29. The position assumed when the seat is of proper height, and the feetsupported. Fig. 30. The position a child naturally assumes when the seat is so high that thefeet are not supported. ported, the child soon becomes exhausted, restless, and unfitfor study. In the construction of a school-room, the benchesshould be of different heights, so as to be adapted to the dif-ferent pupils, and they should also have appropriate backs. 134. What is said of the benches or chairs in a school-room ? What isrepresented by fig. 29 ? By fig. 30 ? What is the effect when the lowerlimbs are not supported ? 56 ANATOMY, PHYSIOLOGY, AND HYGIENE. 135. Compression of the chest should he avoided. In chil-dren, and also in adults, the ribs are very flexible, and a smallamount of pressure will increase their curvature, particularly atthe lower part of the chest, and thus lessen the size of thiscavity. The
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