[ 732 ] 
ff- Thc ele&rical JEther is much more fubtil 
than common Air, and paffes to a certain Depth 
through all known Bodies. It paffes mod readily 
through Metals, Water, and all Fluids, except refin- 
ous ones j then animal Bodies dead or alive, in pro- 
portion as they are more or lefs wet 5 then Stones, 
Wood, and Earths. It paffes to a certain Thicknefs only 
thro' Refins, dry animal Subftances,W ax, and Glafs. For 
this Reafon Bodies are called Eledrics per fe , or Non- 
eledrics ; not only for their rubbing the Electricity 
from other Bodies, but Hkewife as they permit more 
or lefs of the eledricai ^Ether to pafs through them. 
This yEther has not only the Property with Air of 
moving light Subftancesj but it feems to have an- 
other, and that is Elafticity. 
56. That this Fluid is more fubtil than common 
Air, is more particularly demonftrated by its. [palling 
through fcveral Glaffcs at the fame time 5 through 
any one of which, though ever fo thin, Air can- 
not pafs. It likcwife paffes, as I have mention'd 
before, through all known Bodies, except Origi- 
nally-eledrics, and even through thefe to a certain 
Degree. Its Elafticity is proved by its extending it- 
felf round excited Eledrics, and excited Non eledrics, 
to a confiderable Diftanee * as well as by its in- 
creafing the Motion of Fluids. This is demonftrated 
by the Experiment with a fmall glafs Siphon where 
the 
curium attracting not only Straws, and Shavings of Wood, hut alfo 
thin Pieces of Copper .and Iron. See Theophraftus -#>/ t ay kldar /. 
K etc TO kVplUCZOV ikKtrl yB TO O l effc Q&flV K 
{jJjVW Kstqipn tjukov, dkk a. %ctkx.ov x) zdv kZTtjoi' ajTs&f x} 
CkioKkYn ttetyj. See p. 74. in the late Edit, by J. Hill. 
