Lecture

 1 I  |        is owing to its greater size. Now if I were to place
 2 I  |        that, owing to the vast size of the mountain as compared
 3 I  |    velocity, whatever be their size.~I can not take a better
 4 II |       exactly equal to its own size; but now let me take this
 5 II |      equal to the other one in size, and place it midway between
 6 II |        screen; now look at the size of the shadow B D - it is
 7 II |        four times the original size. Here, then, comes the "
 8 II | distance, A B is two, but that size E being one, this size B
 9 II |    that size E being one, this size B D of shadow is four instead
10 II |        would be nine times the size. Again, if I hold this screen
11 II |       please, which is of such size and power as to be almost
12 III|      ether in this form by the size of its flame; and you now
13 III|        volume of steam of that size, B [1,700 cubic inches;
14 IV |      piece of platinum of that size, it is equal to the weight