Lecture

 1 II|     that this piece of common charcoal is just the same thing,
 2 II|      this charred straw, this charcoal, and these diamonds, are
 3 IV|     difference. [The piece of charcoal was ignited, and introduced
 4 IV|       than this combustion of charcoal in oxygen? You must understand
 5 IV|    sparks is a portion of the charcoal, or the bark of the charcoal
 6 IV|  charcoal, or the bark of the charcoal thrown off white hot into
 7 IV|  affinity. There you see some charcoal burning in oxygen. Well,
 8 IV|    oxygen just as well as the charcoal does, or indeed better,
 9 VI|       a vessel containing two charcoal points, and I bring it forward
10 VI| exhausted the air so that the charcoal can not burn, and therefore
11 VI|     absolutely take these two charcoal poles down under water,
12 VI|       silver, and place it on charcoal connected with one end of
13 VI|  battery, and lower the other charcoal pole on to it. See how brilliantly
14 VI|     is a piece of iron on the charcoal: see what a combustion is