230 



ribs and the left hip joint. Lastly, the drawing on 

 the left shoulder-blade from the head having been 

 already estabhshed, the line of traction is made 

 collateral by a drawing from below. 



§ 178. If we have previously succeeded in ex- 

 plaining the successive movements of the parts in 

 detail, the fillings and exhaustions given in this 

 section — the action of the leading one being con- 

 tinued throughout — should indicate those move- 

 ments. The key to " setting up," as before men- 

 tioned, is rather the knowing where to yield than 

 where to initiate movement. 



The pacing movement ought, perhaps, theoreti- 

 cally, to equalize a C of the lung tips before its 

 corresponding lower or upper lobe ; but in practice, 

 particularly where there is even the slightest dis- 

 tortion, we think it will be necessary to give some 

 precedence to the lobes. 



§ 179. There remain two points to be spoken of. 

 These depend upon the fact that when the shoulder- 

 blades are turned outwards they act upon the 

 lower part of the neck-root joint, and affect the 

 trunk ; but when they are turned inwards they act 

 upon the upper part of this joint and affect the 

 neck S. 



By pressing the right shoulder forward, and to 



