431 



CHAPTER V. 

 METALLIC ELEMENTS. 



GENERAL OBSERVATIONS. 



The metallic class of elements is considerably more numerous 

 than the non-metallic class, embracing forty-two elementary bo- 

 dies* Of these, seven only were known to the ancients, and of the 

 remainder, a large proportion are of recent discovery. Their 

 names and their densities, when accurately determined, with 

 the dates and authors of their discovery, are contained in the 

 following table, compiled from the work of Dr. Turner : 



TABLE OF METALS. 



F F 



