182 H. Wurtz on the Mouth Blowpipe. 
familiar facts of an allied nature, it occurred to me that the col 
verse of this phenomenon might also take place, or that an él 
The bead when cooled in this way remained transparent, and 
manganese was thus distinctly detected in a purely white ma 
ble, in which its presence could be distinctly pronounced upoa 
S 
to use 
Blow: 
pipe operators will need no further remarks upon the im tis 
Cive, to the success of this new manipulation, to have 
such as are above detailed, of obtaining an increased heat) 
; phorus st 
* Speaking of red zine ore, Berzelius says that it is dissolved by i 
por “the color of sepa of sampinses ceninst in obtained tl he 
so a quantity that it i cooling: — 
eS oie y that it is no longer transparent on 8 . 
