1765 Reims: Celebrations of the people and Electricity

Electricity, or not? And if this is not electricity, than what is it, gas? The image is titled and dated:
  • Celebrations of the people.
  • at Reims the 27th of August 1765
  • Source
Réjouissances du Peuple . . . à Reims le 27 aout 1765.jpg