bold = Main text
   Lecture                                 grey = Comment text

 1 III   |         A, filled with air, the tube from which dips into some
 2 III   |    which is now standing in the tube at C will travel forward.
 3 III   |        is being driven down the tube, and how it is bubbling
 4 III   | introduce one end of this glass tube into the bubble, that it
 5 III   |    force enough air through the tube to blow out a light; the
 6 III   |       that is going through the tube (D). See how I am converting
 7 III   |      trough over the end of the tube (D), there goes the vapor
 8 III   |      Now I will put this little tube (O) over there, and that
 9 III   |         this side (A), and this tube (H) will collect the gas
10 III   |    those collected in the other tube (O). Something is coming
11 III   |         and if take an inverted tube of water and collect this
12 IV    |        holding up a small glass tube containing lead pyrophorus21],
13 IV    |    powder, and put into a glass tube, and hermetically sealed
14 IV    |   chemical affinity alone. [The tube was broken at the end, and
15 IV(21)|      has been heated in a glass tube to dull redness as long
16 IV(21)|       be evolved the end of the tube is sealed, and it is allowed
17 IV    |         and put it into a glass tube, and then take a piston
18 IV    |       although I cannot get the tube through this hole or into