151 



"" counter-action " in its fibres. Begins a rolling 

 motion of the right eye muscle in-^varcl, in its rear 

 portion corresponding with the motions, from re- 

 action in the rear C of the spine. Produces some 

 inward bearing of the left hind-foot from the 

 change of centre of gravity. 



b'. Direct action in secondary section. Bight 

 true rib projDcllers come on inner bearing, and 

 bearers on outer bearing. Bight eye muscle rolls 

 inward, by its anterior part, loop still not moving. 



b^. Be-actionary formation of rear half of com- 

 posite spine for the posterior winding-line. Brings 

 the left hind-ioot on to its iniier bearing. Bolls 

 the left pillar of the diaphragm inward by its lower 

 part. Turns (by change of socket facing) the 

 right (free) hind-foot for outer bearing. 



b'^. Direct formation of anterior part of the com- 

 posite spine, for right posterior winding Hue, 

 secondary section. Lower C of right lung tip fills, 

 rolling inward. Bight fore-foot comes on inner 

 bearing by movement of socket from continued pass- 

 age of the upper end of sternum to the left. Turns 

 the posterior end of sternum, left side, inwards by 

 the front, so far as the displaced position of the 

 cross-line end will allow it. 



Partial movement in neck-root joiut crossing 



