242 



Mr. W. H. Dines. 



[June 19, 



Position I continued. 



Angle of 

 incidence. 



Angle of 

 incidence. 



5 

 10 

 15 

 20 

 30 

 45 

 60 



Values of moment. 



102 



97 



85 



79 



63 



48, 52, 45 



38, 39 



25 



9, 10, 12 



Position III. 



Values of moment. 

 

 3 



7,11 

 9 



11, 10, 11 

 19 

 22, 15,22,15 



These tables give a negative value to the tangential component of 

 the pressure when the angle is 60, and they also make it appear 

 that the central line of pressure is coincident with the central line 

 of the plate until the angle of incidence exceeds 45. Neither of 



