IDENTICAL CHANGES 



haps contrary in direction; even a steady flowing 

 stream can, by the obstructions placed within it, 

 drive a chip in any direction, even upstream. 



PROPOSITION XVI. 



The cohesion of the particles of a substance is a 

 direct result of the reproduction of atoms by 

 an universal Current of void matter, and of 

 the interlocking of particles in solid sub- 

 stances. 



Cohesion is that quality, pertaining to certain 

 states and forms of matter, which unites the several 

 particles into one homogeneous whole. And the 

 generally accepted idea is that it is inherent in the 

 particles, an attraction of one particle for another. 

 It is stated that cohesion works at innnitesimally 

 small distances only, distances so small that sci- 

 ence can determine next to nothing about them. 



The particles that do cohere are not the atoms 

 only, but in a greater measure the organizations 

 of higher degrees. 



That cohesion is not a family affinity, or liking 

 of one particle for another of the same elementary 

 substance, is plainly proven by the well-known fact 

 that substances elementary different, by being 

 brought together by fusion, exhibit more cohesion 

 than either substance by itself. There is no abso- 

 lute measurement of cohesion. Cohesion does not 

 in that sense pertain to mass that gravity does. 

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