Candle , Sec. by an EleSlrical Spark. 1025 
the wire, which wire is only to be put into the glafs tube 
again when the phial is to be difeharged, 
Mr, cavallo finds, that this jar will keep its charge a 
month, if the glafs tube, and likewife the jar where it 
is not coated, are carefully lined with fealing wax both 
within and without. 
A jar, containing fix or eight pints, fitted up in this 
manner, may be kept as a magazine of electrical fire, 
and a little coated phial, juft big enough to light a can- 
dle, may be occafionally applied to it on purpofe to light 
the powder of refin. As foon as this little phial is 
charged, which is done in an inftant, the wire muft be 
taken out of the large jar or magazine, to keep the re- 
mainder of the charge, which may ferve afterwards for 
feveral charges of the little phial. 
I have often carried in my pocket fuch a little .jar a 
whole day, on purpofe to fire a kind of piftol loaded 
with inflammable air in the manner deferibed by Mr. 
volta of Como. A phial of about two ounces contained 
ele<ftrical fire enough to kindle fuch a piftol twenty 
times. In order to take out only as much of the eleCtri- 
eal charge as w r as wanted for this purpofe, I plunged into 
the glafs tube of the charged phial a fmall glafs tube, 
four inches long, adapted as a Leyden phial, by flicking 
Vox. LX VIII, 6 M ia 
