SENSITIVE FLAMES, ETC. 19S 



to an incessant ricochetting, and the flame obtained will be 

 less sensitive than if the gas-cock were completely open, 

 and the pressure adjusted by means of weights. The free- 



.OL 



FIG. 3. 



dom of the gasway has led me to employ a form of 

 apparatus, which yields the most sensitive flame with which 

 I am acquainted. A perfectly smooth and tranquil flow of 



