80 DIVISIBILITY OF MATTEK ATOMIC THEORY. 



electricity on the surface-molecules of bodies, as shown 

 in the experiments of Grove and Karsten the curious 

 facts described by Prout under the name of Steror- 

 ganisation the conditions (denoted by Hoffman under 

 the terms univalent, bivalent, &c.) which decide the 

 different combining powers of chemical elements, &c. 

 All such problems are closely blended with others of 

 like import ; and the progress of enquiry is ever multi- 

 plying these connexions, and making them subserve 

 to mutual illustration and ulterior discovery. 



