ELEMENTS OF PHYSIOLOGY 



chin in, hips back. By keeping this attitude in mind and 

 practicing it faithfully for a few weeks, one can train the 

 muscular sense to become so accustomed to it that a stoop- 



FlGS. 75, 76, 77. Positions in Standing. (After Mosher.) 



In Fig. 75 the weight rests equally upon both legs. This position does not cause deformity, 

 but soon becomes tiresome, as the legs demand the privilege of working by turns. 



In Fig. 76 is shown the best position and the one that should be assumed habitually. One 

 foot is slightly advanced, and the weight of the trunk can be transferred with ease from 

 one leg to another. The chest is free to expand. 



In Fig. 77, one leg supports the trunk and the other is thrown to one side as a brace. It 

 is very harmful if the weight is not often shifted. One who has acquired the habit of 

 dropping upon one and the same leg while at work soon shows the following variations from 

 the normal : 



If it is the right leg, for instance, that supports the body, the right thigh becomes greater in 

 circumference, the right hip higher, the spinal column curved laterally with concave side to 

 the right. The right shoulder is lower than the left, the ribs are crowded together on the 

 right side, the face becomes slightly unsymmetrical. 



ing or crooked position will be uncomfortable (Figs. 75, 76, 



77, 78, 79> 



130. Nutrition of Bones. Good food and pure air 

 brought by a vigorous circulation are necessary to the 

 health of the bones. Poor or indigestible food, stimu- 



