250 



lo h' consists so much in the reflected secondary 

 action, that the actual primary action occupies but 

 little time, and also the direct secondary section is 

 so retarded that the filling of the alternate upper 

 lung lobe may be kept back until the formation of 

 even the composite spine is well advanced. 



The accommodating of the lower C convex of the 

 neck to the reflected secondary action in that part, 

 must be particularly remembered, and the inward 

 turn of the filling loiver C of the alternate lung tip, 

 and outward turn of the exhausting loioer C, the 

 outward turn of the filling upper C and inward 

 turn of the exhausting one. 



Finally, in causing all the movements to succeed 

 a continued development of the first, and, by in- 

 duction of the succeeding lines in the head-joint, 

 it must not be forgotten that eve^y thing goes for- 

 ward toivard the formation of the collateral tractions, 

 and that thus, whatever the movement, the head 

 keeps steadily up. 



To complete this subject, see particularly Ap- 

 pendix n, p. 290. 



