Hcemajlatics. 93 
2. Dr. Boerhaave obferves that Oil is capa- 
ble of a much greater Degree of Heat than 
Water ; and that, like the Blood Globules, a- 
bounds with Sulphur, which is found ftrong- 
ly to attraft Light and Air, which are both 
very active Principles. 
y. Now many folid Bodies, which having 
acquired Warmth by rubbing, being found to 
be cleftrical, it put me upon trying whether 
any, much agitated Fluids, were fo too. 
6 , Having therefore put half an Ounce of 
Mercury into a two Ounce Vial, I fliook it 
briskly to and fro for a confiderable time, and 
then laying the Vial; down Sideways on a 
Table, I rolled it very gently, fo as to make 
the Edge of the Mafs of Mercury approach 
gradually to innumerable fmall feparate Parti- 
cles of Mercury which adhered to the Sides 
of the Vial ; where, with Pleafure I could fee 
fome of thofe Particles attrafted to, and others 
repelled from the Mafs of Mercury; which 
plainly fliewed the eledrical Quality it had 
acquired by Agitation : Yet Mercury heated 
by an EfFervefeenqe with Aqua jortis 
had no Eleftricicy, 
7 . 1 poured into a thin Florence Flask two 
Ounces of cold Water, and to that a fuffi' 
cicnt 
