270 Dr. Herbert Davies on the Areas of the [Mar. 17, 



Tricuspid 2 _j»3g 

 MitraT 1'47~~ 



Pulmonic__ *81_j.^q 

 Aortic '58 

 Difference of the ratios = *04 



Sheep. 



Circumference. Area. 



Tricuspid 3*7 in. 1*09 sq. in. 



Pulmonic 2*5 *49 



Mitral 3*2 -81 



Aortic 2-1 -35 



Tricuspid __l-Q9_ 1 , 3/1 



Mitral -81 

 Pulmonic__ *49__j.^q 



Aortic '35 



Difference of the ratios =*0G 



Sheep. 



Tricuspid 4*25 in. 1*435 sq. in. 



Pulmonic 2*70 '580 



Mitral 370 1*090 



Aortic 2«30 -420 



Tricuspid_ 1 *435 _ j .3 ^ g 

 Mitral " 1-090" 



Pulmonic__ '^^=1-380 

 Aortic "42 

 Difference of the ratios = -064 



Pig. 



Tricuspid 3*95 in. 1*24 sq. in. 



Pulmonic 2-55 '51 



Mitral 3-50 '97 



Aortic 2-25 -40 



Tricuspid _ 1 * 24 _ j .278 

 ~ Mitral ^97 



Pulmonic_ *51 2.275 

 Aortic *40 

 Difference of the ratios = *003 



