100 



THE C I R C U L A T I O X. 



During auricular contraction, the force of the blood pro- 

 pelled into the ventricle is transmitted in all directions, but 



FIG. 36. 



r <pi&prp,ms ef v^l^ec of the. heart (-after- Diriton). 



being jn^ufficienttp jraisie the ^milu^ar sralves, it is expended 

 in distepdjug '^c; veitrlole, nrd in raising an;! gradually clos- 



