Murtat of Potash. 237 
the salt gave a number of successive reports. The 
sulphuric or nitrous acids, dropped on this mixture, 
instantly produced a. strong flame ascending to a 
considerable height. 
EXPERIMENT X. WITH FIXED AND 
ESSENTIAL OILS. 
A few drops of spermaceti oil rubbed with a grain 
or two of the salt produced a number of loud re- 
ports. The sulphuric acid inflamed this mixture; 
the nitrous acid did not. 
Olive oil, the essential oils of rosemary, juni- 
per, cloves, carroway, aniseed, cinnamon, nutmeg, 
amber, mint, and essence of lemon were rubbed 
with the salt: all of them detonated successively, and 
such of the mixtures as were tried took fire with 
the sulphuric acid. 
EXPERIMENT XI. WITH SPIRIT OF 
TURPENTINE, 
A few drops of spirit of turpentine rubbed with 
a little of the salt detonated in much the same 
manner as the substances used in the last experi- 
ment. The sulphuric acid, dropped on this mix- 
ture produced a strong flame with a cloud of very 
black smoke, 
EXPERIMENT XII. WITH CAMPHOR. 
A little of this substance, on being rubbed with 
