OP TASTE. 157 



NOTE. 



(A) Certainly an infinite number of bodies are sapid, which 

 contain no kind of salt. 



Some gases and metals are sapid ; they however may possibly 

 be united with the fluids of the mouth, before they produce an 

 impression : but it is by no means proved that the moisture indis- 

 pensable for taste is requisite to dissolve the substance tasted and 

 not to fit the papillaj for their office. 











