IMPROVEMENTS 
I N 
ELECTRICITY. 
■ l . 
By JOHN INGENHOUSZ, F. R. S. 
BODY PHYSICIAN TO THEIR IMPERIAL MAJESTIES. 
'V 
Who was nominated by the Prefident and Council to 
profecute Difcoveries in Natural Hiftory, purfuant to 
the Will of the late henry baker, Efq. F. R. S. 
Read the ROYAL S O C LE T Y, June 3, 1779, 
