The posture of school children, with its home hygiene and new efficiency methods for school training . e top of the spine thatit very easily tips backward with the chin elevated in the air;on the contrary, a habit of casting down the eyes may lead to theopposite fault of depressing the chin. As temporary attitudes,there is no harm in either of these positions, but the habit ofthe erect position when4hat is assumed should be with the neckupright and the chin level. In correcting the position of the neck and head, a clear dis-tinction has to be made between drawing the neck backward sothat it is
The posture of school children, with its home hygiene and new efficiency methods for school training . e top of the spine thatit very easily tips backward with the chin elevated in the air;on the contrary, a habit of casting down the eyes may lead to theopposite fault of depressing the chin. As temporary attitudes,there is no harm in either of these positions, but the habit ofthe erect position when4hat is assumed should be with the neckupright and the chin level. In correcting the position of the neck and head, a clear dis-tinction has to be made between drawing the neck backward sothat it is an upright column, and merely tilting the head back-ward on the neck as just described. The effect of the carriage of the neck and head on the totalheight of the body is very marked, and the impression createdby their position is fully equal to that made by the posture ofchest and spine. A well-poised head is one of the most beautifulpoints of a fine physique, and no factor is more important inthe general impression of intelligence and efficiency unconsciouslyconveyed by the carriage of the Sir Frederick Leighiun Plate VIII. — Hit. TJ^rr. CHAPTER VIIITHE CHEST No part of the body undergoes in the process of growthgreater changes in its proportions, shape, and contours than thechest, and for no part are the right Hnes of growth so often mis-understood. The chest, or thorax, is that part of the irunk which is in-closed by the ribs and contains the heart and lungs (Fig. 26).It is separated from the abdomen by the great, flat breathingmuscle, the diaphragm, which forms a distinct floor for it,though one that moves upward and downward with every ribs are attached behind to the dorsal spine, which holdsthem in a perfectly normal position when itself erect, with onlyits natural curve, but allows the ribs to sink downward in acollapsed position when the dorsal curve is increased or exag-gerated. On the other hand, a backward tilt of the dorsal curve,as in the banta
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectchildca, bookyear1913
