FIXED OILS. 



195 



sidered as a symbol. Two centuries after the foun- 

 dation of Rome, both Italy and Africa were strangers 

 to that useful plant; it was naturalized in those 

 countries, and at length carried into the heart of 

 Spain and Gaul. The timid errors of the ancients, 

 that it required a certain degree of heat and could 

 only flourish in the neighbourhood of the sea, were 

 insensibly exploded by industry and experience *.'* 



f 



Olive Olea Europcca. 

 * Gibbon's Decline and Fall of the Roman Empire, chap, ii. 



