2.6 Mr. cavallo’s Account of fonte 
piece of fealing wax, or other electric, towards the brail 
Cap ef. 
It is, perhaps, unneceflary to remark, that this obfer- 
vation muft be made in an open place, as the roads out of 
town, the fields, the top of a houfe, 8ec. 
I have often made ufe of this electrometer in the 
roads between Hlington and London, and by means of 
it I have confirmed the obfervation of Mr. ronaynd, 
who firft difcovered the electricity of the fogs, as is 
teftified by a paper of his publifhed in the Philofophical 
TranfaCtions, and who has remarked, that a fog is very 
rarely not electrified; and that in clear frolty weather 
the air is conftantly electrified. 
Promijcuous 'Experiments. 
I. Having had frequent occafion to obferve how diffi- 
cult it is to deprive fealing wax of its electricity entirely, 
after that it has been well excited, I had the curiolity to 
try whether water could effeCt it. In order to that, I tied 
a flick of fealing wax to a filk firing about a yard long, 
and after having excited it very powerfully with flannel, 
l plunged it in a tin veflel full of water, and immediately 
drawing 
