Extracts of a treatise on electricity, by William Watson, F. R. S
... ELeclrics per fe, or originally eledries, I call thofe bodies in which an attractive power towards light fubltances is eafily excited by fridion as glafs, amber, fulphur, fealing wax, and moft dry parts of animals, as filk, hair, and fuch like. Non e/entries, or condudors of eleftricity, I- call thofe bodies in which the above property is not at all, or very fiightly, perceptible; as wood, ...