178 Mr. Goodman on the Cause of Dissimilarity in the 



ting from each other and from the interstitial spaces of the 



elementary particles of the body, which there is every reason 



Fig. ] . Fig. 2. 



_ . . . ... Remote polarization. 



Contiguous and proximate polarization. Fluid set " free." 



Negative. Positive. Extension or expansion of 



Result: condensation of fluid by attraction fluid by repulsion of similar 

 of dissimilar forces, or " intensity." force, or '• tension." 



to believe voltaic fluid occupies, and at once spreading them- 

 selves upon the surface of the metal, stretching or expanding 

 to the utmost degree allowable by their affinity for the metal 

 and the pressure and non-conduction of the atmosphere, and 

 exhibiting their repulsive properties on other bodies, or the 

 phaenomena of electricity of "high tension." On the other 

 hand, let the naturally electrified particles of matter remain in 

 their usual proximity; let them be polarized to any amount; 

 let them be either the cushion and glass cylinder just described, 

 or the plates and fluid of voltaic apparatus, or any other kind 

 of matter whatsoever ; and so long as they remain in their 

 usual state of apposition and contiguity to each other, although 

 frequently some thousand times more fluid is in motion than 

 is produced by the electrical machine, not an evidence of ten- 

 sion or other sign of sensible electricity will be rendered evi- 

 dent by the electrometer, the attraction of the two forces for 

 each other being sufficient to neutralize their sensible action 

 with regard to all external matter, and to suppress their indi- 

 vidually repulsive powers. In consequence the increased 

 capacity for a future supply of fluid of the same kind in 

 the place of repulsion exhibited in the former instance, 

 evinces the disposition of the fluid to become more and 

 more condensed, and to assume that condition which may 

 with great propriety be termed "intensity." The electrical 

 condition of the cylinder after its removal from the rubber 

 is that which exhibits two positively electrolyzed surfaces. 

 This state I have denominated " unrelieved polarization." 

 Had a portion of fluid been removed from the internal 



