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   Lecture                                grey = Comment text

 1 I     |      shell-lac about 12 inches long and 1 1-2 in diameter],
 2 I     |        thin stick about a foot long]. Do not refer to your toy-books,
 3 I     |      in the upper part of this long glass vessel, and I have
 4 II(7) |  powdered alum to hot water as long as it dissolves; and when
 5 III   |     rod of iron about two feet long and a quarter of an inch
 6 IV    |     and stiffening, and before long I shall have it quite hard;
 7 IV(21)|        tube to dull redness as long as vapors are emitted. As
 8 V     |    others are not. Observe how long the heat stops in this ball.
 9 V     |        and if I were to take a long metallic wire, no matter
10 VI    |     are attracting each other, long before the connection is
11 VI    |      are obliged to turn for a long time together, we have here
12 VI    |      remain in the solution as long as I liked, without having
13 VI    |        only of late years, and long since I was born, that the
14 VI    | suspecting this affinity for a long time, and had long had great
15 VI    |       for a long time, and had long had great hopes of success;
16 VI    |  magnetic power. There is that long bar of iron held out, and