9° 



UNIVERSITY OF MISSOURI STUDIES 



As the stirrup moves away from E, the initial part of the 

 partition yields upwards, as shown in figure 28 at I. By I, 

 II, and so forth, are meant successive moments between E 

 and G in figure 26. The increasing velocity of the stirrup re- 

 sults at II in an increased pressure at all the points of the 

 partition which had yielded at I. Therefore, at II in figure 28 

 these points are somewhat farther displaced than they were at 

 I, but not proportional to the increase of the velocity of the 

 stirrup but much less, according to figure 27. At the same 



Fig. 28. Seven successive positions of the partition, three preceding 

 and three following an inflection point (F) 



time we notice that the part of the partition which has now 

 yielded extends much farther to the right at II than at I; 

 for the stirrup has displaced much more fluid at II than at the 

 earlier moment I, and the slight increase in the displacement 

 of those parts of the partition which were already displaced 

 at I, can not nearlv make room for all this fluid. Therefore the 



