[ i6? ] 
moifture, and the apartment itfelf was 
open on one fide, and confequently com¬ 
municated freely with the external air, it 
was impoffible for me to procure any very 
accurate meafure -of the electricity I em¬ 
ployed. It n.otwithftanding appeared, 
that a fmaller quantity than what I at firft 
imagined was capable of producing fen- 
fible phenomena. 
Thefe trials deferve to be repeated, in 
order that we may determine the meafures 
with the precifion and correCtnefs required 
in phyfical fubjeCts. 
However, the data of which we are 
.now in poffeffion, are fufficient to con¬ 
vince us, that though five or fix degrees 
may be fufficient for a frog, yet they are 
not fufficient for a fowl, a horfe, an ox, 
an elephant, or a whale. Yet notwith¬ 
ftanding, a fmall piece of tin-foil and a 
lliilling can produce furprifing effects, as 
well in large as in fmall animals. 
M 4 It 
