Lecture

 1 II |          which compose these two pieces so far apart that their
 2 II |    reason that there are now two pieces in the place of one. I will
 3 II |          lead). I have here some pieces of lead which I melted this
 4 II |     making them clean. Now these pieces of lead hang together by
 5 II |         press these two separate pieces close together, so as to
 6 II |       together; and if I put two pieces of coke in some part of
 7 II |          surface of one of these pieces of paper as upon the other.
 8 II |        of these little tear-like pieces and break off ever so little
 9 II |        at once burst and fall to pieces. I will now break off a
10 II |        whole immediately fell to pieces.] There! you see the solid
11 II |          shattered the latter to pieces.]~Here is another form of
12 II |         take some of these small pieces of rock crystal; they have
13 II |       whole bottle will break to pieces - it can not hold together. [
14 II |         I shall just break it to pieces. You saw how it was in the
15 II |         to form square or oblong pieces with cubical sides. Now
16 III|      crystals. Here also are the pieces of coke which I put into
17 IV |          the other day - the two pieces which clung together. Now
18 IV |        clung together. Now these pieces, if I take them to-day and
19 IV | beforehand. And I have here some pieces of paper which are prepared
20 IV |    produce heat. The Indians rub pieces of wood together until they
21 IV |    suppose I shall set these two pieces of wood on fire by friction,
22 IV |         lecturer here rubbed two pieces of cedar wood strongly against
23 V  |         first of all, take these pieces of glass and metal, and
24 VI |          is pulling the water to pieces and setting free hydrogen
25 VI |  beautiful manner. Here are some pieces of zinc covered with mercury
26 VI |         the fluid or outside; by pieces of metal attached, they