440 ANIMAL MECHANICS. 



Hence we find 



Mean, 



Brown, from observations made on the heart of the Ox, 

 states that the right ventricle exceeds the left in the propor- 

 tion of no to 100, which would make 



X + p 



— =a..o. 



The following observations have been made by anatomists 

 on the relative volumes of the two ventricles in the human 

 heart : — 



Human Heart. ~~A~^' 









2. 







3- 







4- 







5- 







6. 







7- 







8. 







9- 







Mean, . . . 2.128 



There are good physiological grounds for believing that, 

 during life and action, the volumes of the two cavities are 



