Lecture

 1 I  |         with the little mass of substance I have here! And again,
 2 I  |          Again, here is another substance [some anhydrous sulphate
 3 I  |        is the same water with a substance which heats nearly as much
 4 I  |         of thread, or any other substance were hung where this ball
 5 I  |       is never lost; that every substance possesses it; that there
 6 I  |   gravitate just like any other substance does; they all are attracted
 7 I  |        so if it were uniform in substance; but you see it does not;
 8 II |    crimson red.] Now there is a substance which is very beautiful,
 9 II |   prepared a little of this red substance, which you see formed in
10 II |          There it is - the same substance spread upon paper; and there,
11 II |         there, too, is the same substance; and here is some more of
12 II |          but if I take any hard substance, and rub the yellow part
13 II |       back by the change in the substance. Now [warming it over the
14 II |        are all of them the same substance, changed but in their properties
15 II |         say, attracted by every substance that gravitates (and we
16 III|      water is again a very good substance to take as an illustration (
17 III|       attraction that the solid substance is destroyed altogether.
18 III|      platinum, and nearly every substance in nature; if the temperature
19 III|        the enormous bulk of the substance in this new form: when we
20 III|       state of vapor. Here is a substance which we call iodine, and
21 III|   colored vapor from this black substance, or rather the mixture of
22 III|    trough; but it is a vaporous substance, and we must therefore examine
23 III|         oxygen: here is another substance which contains oxygen -
24 IV |       you very well how light a substance this is; for, notwithstanding
25 IV |      sugar19, quite a different substance from the black sulphuret
26 IV |      this other case: here is a substance, gaseous like the oxygen,
27 IV |  picture - absolutely forming a substance which prevents the natural
28 IV |      being contained within the substance. It is by this kind of attraction
29 V  |       if they were parts of its substance; but there is another property
30 V  |         experiment with another substance; for if I take a glass rod,
31 V  | attraction. There is scarcely a substance which we may not use. Here
32 V  |       down. And here is another substance, gutta-percha, in thin strips:
33 V  |        readily removed from the substance, for it has existed in it
34 V  |          then, the whole of the substance which attracts. If I lace
35 V  |     means of taking it from one substance and bringing it to other
36 V  |          not because it has any substance of its own, but by some