Of its communication with the 

 right ventricle, 



Of the Right Ventricle. 



174. Its particular itrufture, fituation, 

 and capacity. 



175. Thecolumnce carnuz how formed. 

 Their particular ufes explained. 



176. Of the valvulce tricujpidaks, 

 placed between the right ven- 

 tricle and auricle. 



Their ftrufture and ufe. 



177. Of the communication of the 

 right ventricle with the pulmo- 

 nary artery. 



Of the valvulce femilunares. 

 Their ufe, &c. 

 Of the Left Auricle. 



178. Its ftrufture, &c. 



Of the entrance of the pulmo- 

 nary veins into it. 



179. Of its communication with the 

 left ventricle. 



In 



