. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. Fig. 33. The table is*- proper height, the position is correct, and the spinal column,1, I, is straight, while die shoulders are of equal height. part of the spinal column is inclined toward the elevatedshoulder, and the lower part is curved in the opposite direc-tion, giving the form of the letter S to the supporting columnof the bodv. What does fig. 33 represent ? HYGIENE OF THE BONES. 59 Experiment. Let a pupil be placed at a desk or table withone elbow raised, as is frequently seen while writ
. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. Fig. 33. The table is*- proper height, the position is correct, and the spinal column,1, I, is straight, while die shoulders are of equal height. part of the spinal column is inclined toward the elevatedshoulder, and the lower part is curved in the opposite direc-tion, giving the form of the letter S to the supporting columnof the bodv. What does fig. 33 represent ? HYGIENE OF THE BONES. 59 Experiment. Let a pupil be placed at a desk or table withone elbow raised, as is frequently seen while writing, or atstudy, and observe the condition of the shoulder and spinalcolumn in this position. Place another pupil at a table nohigher than the elbow when it hangs by the side while sitting,and observe the appearance of the shoulders and spinal a comparison of the two attitudes, the preceding remarkswill be comprehended and appreciated. Fig. Fig. 34. The table is too high, and the position is oblique and improper. Theright shoulder is seen higher than the left, while the spinal column, 1, 1, exhibitsthree curves. 140. One shoulder may be elevated, and no injurious results What experiment is mentioned? What does fig. 34 represent ? 140. Howcan one shoulder be elevated and no injurious results follow ? 60 ANATOMY, PHYSIOLOGY, AND HYGIENE. follow, provided care is taken not to keep it in the raised posi-tion too long, or if the opposite shoulder is elevated for thesame period of time. The right shoulder projects more fre-quently than the left. This arises from the greater use of theright hand with the shoulder elevated, and not unfrequentlythe oblique positions assumed in performing the daily voca-tions of life. With proper care, and by calling into actionthe left shoulder, this deformity can be prevented. Fig. 35.
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