C 15 ] 
II. An Account of fome new Experiments in Ele&ricity , 
with the Defcription and Ufe of two new EleSlrical In- 
Jlruments. By Mr. Tiberius Cavallo, F. R. S. com- 
municated by the Prefident. 
Read Nov. 25, 1779. 
P ROFESSOR lichtenberg, of Gottingen, fome 
time ago made an experiment upon the electro- 
phorus, an account of which was firft received in Lon- 
don towards the latter end of the year 1777. The 
phenomena attending the experiment are very enter- 
taining and various, but I do not know that any perfon 
ever offered a fatis factory explanation of them. The 
author himfelf, in his paper entitled “ Be nova methodo 
“ naturam ac motum Fluidi EleSIrici invejligandi Com- 
“ mentatio prior f wherein he gives an account of the 
experiment, does not attempt any explanation of it ; 
contenting himfelf with the account only of various 
particulars attending it. In brief, the experiment is as 
follows : 
1 
The. 
