. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. stooping position,and become round shouldered, by inclining forward to bringtheir books or work nearer the eyes. 139. Pupils, while writing, drawing, and sometimes while * Compare 1,1, Fig. 28, with 2, 2, 2, Fig. 48. 136. May simply snug clothing compress the cartilages ? How shouldthe apparel of a child be worn ? 137. In what direction does the spinalcolumn, in its natural position, curve ? What restores it to its naturalposition when curved laterally ? 138. What is the effect if a lateral curve
. A treatise on anatomy, physiology, and hygiene : designed for colleges, academies, and families. stooping position,and become round shouldered, by inclining forward to bringtheir books or work nearer the eyes. 139. Pupils, while writing, drawing, and sometimes while * Compare 1,1, Fig. 28, with 2, 2, 2, Fig. 48. 136. May simply snug clothing compress the cartilages ? How shouldthe apparel of a child be worn ? 137. In what direction does the spinalcolumn, in its natural position, curve ? What restores it to its naturalposition when curved laterally ? 138. What is the effect if a lateral curvedposition of the spinal column is continued for a long time ? 139. Whenone shoulder is elevated for a long time, what is the effect upon thespinal column ? 58 ANATOMY, PHYSIOLOGY, AND HYGIENE. studying, frequently incline the spinal column to one side, inorder to accommodate themselves to the desks at which theyare seated. Often, these are higher than the elbow as it hangsfrom the shoulder while at rest. This attitude elevates oneshoulder while it depresses the other ; consequently, the upper. 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. 34.
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