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   Lecture                                  grey = Comment text

 1 I     |    invisible steam, or vapor, or gas which came from the marble,
 2 I     |         this steam, or vapor, or gas is, like all other things,
 3 I(6)  |         is a colorless invisible gas, about half as heavy again
 4 III   |      increase converts it into a gas. Is it not a glorious thing
 5 III   |         hear the bubbling of the gas that is going through the
 6 III   |        and I propose letting the gas ascend into it, and I will
 7 III   |          into it we will let the gas (from F) pass. We will there
 8 III   |         to the top of our jar of gas (F), you will see, upon
 9 III   |         showing that some of the gas has passed into the glass
10 III   |       electric spark through the gas by means of the wires (I,
11 III   |  discharged through the confined gas by means of the wires I,
12 III   |      that there is no longer any gas remaining, if I place it
13 III   | stop-cocks again, up will go the gas, and we can have a second
14 III   |        of the water to which the gas has returned. Now is not
15 III   |          large bulk of permanent gas, as we call it, and then
16 III   |      cause, would not ignite the gas. It was therefore recharged,
17 III   |        and that will collect the gas together that comes from
18 III   |        tube (H) will collect the gas that comes from the other
19 III   |       burns [setting fire to the gas]; but what comes out of
20 III   |        with a glowing tip in the gas, when it immediately rekindled.]~
21 III   |        of water and collect this gas (H), you will see that it
22 III   |      other we call oxygen - that gas which so beautifully brightness
23 III   |           and fill the jars with gas.~Now, when water is opened
24 III   |        changed in this way - the gas which you saw burning a
25 III   |          quantity, and the other gas, oxygen, is evolved in only
26 III   |         is the character of this gas. First of all, you remember
27 III   |       and you will see what this gas does in increasing the brilliancy
28 III   |        will not happen in oxygen gas; you will see how differently
29 IV    |         an abundant evolution of gas, now coming over into this
30 IV    |        certain qualities of this gas; now let me exhibit you
31 IV    |   receive it, so can I pour this gas from one jar into another
32 IV    |        now, if I inhale hydrogen gas into my lungs (it does no
33 IV    |         body, platinum, and this gas, and observe how they differ
34 V     |     cylinder to a jet from which gas was issuing; the spark was
35 V     |     cylinder to the jet, but the gas did not light.] Ah! the
36 V     |          did not light.] Ah! the gas did not light, but you saw
37 V     |          the room which blew the gas on one side, or else it
38 V     |          can succeed in lighting gas by touching the jet with
39 V     |     finger near a jet from which gas was issuing, when, after
40 V     |          the jet set fire to the gas.] You now see how it is
41 VI    |       and I can produce hydrogen gas by putting the zinc and
42 VI    |        and setting free hydrogen gas. Now we have learned by
43 VI    |         little mercury to it the gas ceases to come off. We have
44 VI    |          sulphuric acid I get no gas, but this most extraordinary
45 VI    |       zinc and burn it in oxygen gas for the sake of showing
46 VI    |      actual combustion in oxygen gas of some of this metal. [
47 VI(24)|       the side at which hydrogen gas is evolved in consequence