422 -/. LeOonte — Apparent Attractions and Repuls 



and/ Hence, in this case, likewise, by virtue of the smal 

 radius of curvature of the intervening contractile elastic fil 

 the interior forces necessarily prevail, and the two bodies ; 



vvn together. 

 !ase 3. In tl 



Case 3. In this case (fig. 3), it is evident, that as the centers 

 of concavity of the interfering meniseuses are in opposite 

 directions, the common or united meniscus formed by their 

 union, as kn, must have a radius of curvature greater than 

 that of either of the exterior meniseuses at c and o'. Hence, 

 by virtue of the smaller radius of curvature of the exterior 

 tense elastic films at c and o\ the exterior capillar} 7 forces must 

 prevail, and the two bodies are drawn apart. by the superior 

 tensile reactions directed toward the centers of concavity at 3 

 and at 4, (fig. 3). 



It will be noticed that in the preceding explanations of this 

 class of capillary phenomena, I have referred the apparent 

 attractions and repulsions exclusively to the elastic reactions 

 of the tense surface film, whose form is modified by the prox- 

 imity of the partly immersed solid bodies. For the reasons 

 previously assigned. I have left out of consideration the modi- 

 fications of hydrostatic pressure, which are, after ail, really 



the math, n ti. - 1 i i thuds .1 1 ,, 1 m i ,| I'oisson, tin 



explanation, may seem to be less complete and exhaustive: 



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