444 



Lieut. -Col. A. R. Richardson on Sti 



■ line 



At the same time A — >0 and then becomes negative^, 

 showing that the stream-line curls towards a point such as P, 

 fig. 2. 



Fig. 2. 



Showing stream-line •£=— "1 from <£ = 1 to 0=1-7. 



6 = 1-2, c = -033, t/='5. 



Distance to 

 ■bounding stream 

 line = RS 



Distance top/ate 

 = RS 



Further increase in </> causes A to become positive, to rise 

 to a maximum and then tend to zero as <£ — >oo . 



