234 Experiments on the Oxygenated 
frequently thrown out with violence before it is con- _ 
sumed. The su!phuric acid inflamed this mixture 
as I have before stated. ; 
EXPERIMENT Il, WITH CHARCOAL, 
Two grains of salt with one of charcoal intimate- 
ly mixed, and perfectly dry, produced by a smart 
stroke a strong flame without much report. The 
sulphuric and nitrous acids inflamed this mixture, 
the latter with most rapidity. 
EXPERIMENT III. WITH PIT-COAL., 
A grain of dry pit-coal, rubbed with the same 
quantity of the salt, produced sparks and some small 
reports.. With half the quantity of coal, the reports 
were much louder. 
The sulphuric acid added to about twenty grains 
of the salt with ten of the coal, produced a bright 
red flame rising up to a considerable height. 
EXPERIMENT IV. WITH SULPHUR. 
A grain of the salt rubbed with half a grain of 
sulphur produced a very loud report, attended with 
flame and a strong smell of sulphureous acid. When 
the sulphur was reduced to a quarter of a grain, the 
explosion was not made at once as before, but suc- 
cessively. When the proportion of sulphur was 
increased to three fourths of a grain it produced a 
very loud report, much the same as the first; and 
en ee 
