I call _Electrics per se_ or originally-_electrics_, those Bodies, in which an attractive Power towards light Substances is easily excited by Friction; such as Glass, Amber, Sulphur, Sealing-wax, and most dry Parts of Animals, as Silk, Hair, and such like. I call _Non-electrics_ or Conductors of Electricity, those Bodies, in which the above Property is not at all or very slightly perceptible; such as Wood, Animals living or dead, Metals and vegetable Substances. See _Gray_, _Du Fay_, _Desaguliers_, _Wheler_, in the Philosophical Transactions. Footnote 3: Page 6. Footnote 4: I have constantly observed, that the electrical Attraction through Glass is much more powerful, when the Glass is made warm, than when cold. This Effect may proceed from a two-fold Cause: First, warm Glass does not condense the Water from the Air, which makes the Glass, as has been before[5] demonstrated, a Conductor of Electricity: secondly; As heat enlarges the Dimensions of all known Bodies, and consequently causes their constituent Parts to recede from each other, the electrical Effluvia, passing in straight Lines, find probably a more ready Passage through their Pores. Footnote 5: Page 13. ------------------------------------------------------------------------ Transcriber's note: All footnotes moved to the end of the text. Page 5, 'Contract' changed to 'Contact,' "the Contact of Non-electrics..." Page 6, 'Power' changed to 'Poker,' "I suspended a Poker in silk Lines;" Page 7, second 'it' struck, "if it does..." Page 9, 'o'Clock' rejoined. Page 9, period added to 'E. N. E.' Page 22, 'erectified' changed to 'electrified,' "and a Person not electrified..." Page 49, 'it' changed to 'itself,' "not even Gold itself." End of the Project Gutenberg EBook of Experiments and Observations Tending to Illustrate the Nature and Properties of Electricity, by William Watson