[ ,6 7 ] 
Fire, by the Sparks proceeding from an electrified 
Tube of Tin, 
This Experiment with the Sparks coming from 
Metals when made eledric, was firft made by Dr. 
Ludolph , of Berlin ; who, toward the Beginning of 
the prefcnt Year 1744, kindled, with the Sparks ex- 
cited by the Friction of a Glais Tube, the ethereal 
Spirits of Frobenius. This was done at the Opening 
of the Royal Academy , and in the Prefence of fome 
Hundreds of Pcrfons. This Account was not only 
related in the Berlin Gazette , of the 30th of May 
laft •, but has been fince confirmed by feveral Letters, 
fent from Berlin to Leipfic , to Count Manteufet, 
immediately after the Experiment. 
Mr. Marfcall, who now ftudies here, alfo com- 
municated to me a Letter he had received from Ber- 
lin concerning the fame 5 and I have fince been aifo 
certified of it, by the Account of feveral Men of 
Learning, that had feen the Experiment at Berlin , 
and that have fince vifited me at this Place. Laftly, 
Mr. Reinhart , who came hither about laft Eafter> 
with Count Zaluski , Great Chancellor of Boland , 
told me, that the Experiment was not difficult to be 
made ; and that the Liquor, called Quinta Ejfentia 
* vegetabiiis , might very readily be kindled by the 
electrical Sparks, I immediately fent for fome of that 
Effence,and found the Experiment fucceed to my Wifh. 
Red-hot Iron lets no Spirits on Fire, tho’ held very 
near to thofe Spirits; but if that Iron is made eledric, 
its electric Sparks very readily kindle all well-redified 
Spirits. The 
* i. e. Spirit of Wine fo highly rectified, as, being pour’d upon 
Gvnpovtder> and then being fet on fire, will at laft flalh the Gunpowder. 
C. M. 
Y 
