E 146 ] 



Memorandum. 



O&ober 3, 1771, I tried the electricity of a thick 

 fog, and (in at leaft twenty different trials) found 

 the balls feparated from \ to f inch diftance. 

 Whenever I brought them near the building, 

 or approached them with a ftick of excited wax, 

 they clofed j and opened' again, on removing 

 them. 



W. Henly. 



XIX. Ob- 



