Lecture

 1 V|   instance, here is a piece of shellac, having the attraction of
 2 V|     between this ball and this shellac at present; there may be
 3 V|   attraction. But if I rub the shellac with a piece of flannel [
 4 V|        of flannel [rubbing the shellac, and then holding it near
 5 V|    which has arisen out of the shellac simply by this friction,
 6 V|     experiment of exciting the shellac, and then removing the attractive
 7 V|        will take this piece of shellac, and make it attraction
 8 V|      ball was attracted by the shellac, the shellac was attracted
 9 V|  attracted by the shellac, the shellac was attracted by the ball.
10 V|  suspend this piece of excited shellac in a little paper stirrup,
11 V|     will take another piece of shellac, and, after rubbing it with
12 V|    driving this heavy piece of shellac round and round in this
13 V|      if I excite this piece of shellac as before, and take this
14 V| excited glass near the excited shellac, when they attracted each
15 V|   indicator again [the excited shellac suspended in the stirrup]:
16 V|       take this other piece of shellac, and take away the power,
17 V|      made dry. I will put this shellac into the flannel, and here
18 V|        result. I will rub this shellac and the flannel together (
19 V|       I can do by twisting the shellac round), and leave them in
20 V|        are separated? why, the shellac is strongly repelled, as
21 V|     may be obtained by rubbing shellac with flannel or glass with
22 V|     you saw in the case of the shellac, for that only attracted
23 V|       end, just as you saw the shellac and the glass did, with