COHESION FIGURES. 



elongated and form a cylinder with a spherical surface 

 ut each end, fig. 29, B. If the ring is further raised 



FIG. 30 (a i. proj. i real size}. 

 2) 



FIG. 31 (an, proj. re.d sixe). 



the cylinder becomes more and more narrow at the 

 middle and finally breaks, often forming two separate 



