244 



Chemistry. 



[Lecture 32. 



and tin : and 3d, Semi-metals, which were not 

 malleable; as antimony, &c. 



Dr. Thomson adopts a division more agree- 

 able to the principles of modern philosophy, and 

 reduces them under the following heads : 



1, Malleable. 2, Brittle and easily fused. 3, 

 Brittle, and difficultly fused. 



The metals are said to be forty-two in num- 

 ber. 



