SECT. XIV. 2. PRODUCTION OF IDEAS. 121 



muuicate fome property to jit, that it had not be- 

 fore ; but how can one body give that to another, 

 which it does not pofTefs itfelf ? The words im- 

 ply, that they muft agree in having the power or 

 faculty of poffefiing fonie common property. Thus 

 if one body removes another from the part of fpace, 

 that it poflefies, it muft have the power of occupy- 

 ing that ipace itfelf: and if one body communicates 

 heat or motion to another, it follows, that they 

 have alike the property of poflefling heat, or mo- 

 tion. 



Hence the fpirit of animation at the time it com- 

 municates or receives motion from folid bodies, 

 muft itfelf poflefs fome property of foiidity. And 

 in confequence at the time it receives other kinds 

 of motion from light, it muft poflefs that property, 

 which light poflefles, to communicate that kind of 

 motion ; and for which no language has a name, 

 unlefs it may be termed Vifibility. And at the 

 time it is ftimulated: into other kinds of animal 

 motion by the particles of fapid and odorous bodies 

 affecting the fenles of tafte and fmell, it muft refem- 

 ble thefe particles of flavour, and of odour, in pof- 

 fefling fome fimilar or correfpondent property ; 

 and for which language has no name, unlefs we 

 may ufe the words Saporoiity and Odoroiity for 

 thofe common properties, which are poflefled by 

 our organs of tafte and fmell, and by the particles 

 of fapid and odorous bodies ; as the words Tangi- 

 bility and Audibility may expreis the common pro- 

 perty poflefled by our organs of touch, and of 

 hearing, and by the folid bodies, or their vibra- 

 tions, which affecl thofe organs. 



5. Finally, though the figures of bodies are in 

 truth reiembled by the figure of the part of the 

 organ of touch, which is ftimulated into motion ; 

 and that organ refembles the folid body, which 

 ftimulates it, in its property of foiidity ; and though 



the 



