Lecture

 1 I |            of its heaviness or its gravity. I have before me a little
 2 I |         That power is what we call gravity, and you see there [pointing
 3 I |            matter called weight or gravity. Bodies are heavy; you saw
 4 I |         what we call the centre of gravity of the earth, which I will
 5 I |            they call the centre of gravity; it is not at all a bad
 6 I |          short one - the centre of gravity. Now suppose I take a sheet
 7 I |            awl, then the centre of gravity of both the pasteboard and
 8 I |            find that the centre of gravity is somewhere in that line.
 9 I |          point C] is the centre of gravity, - there where the two lines
10 I |           that it is the centre of gravity - that point in me where
11 I | arrangement by which the centre of gravity is at the lowest point when
12 I |           lifting up the centre of gravity (a), and raising it from
13 I |        exactly under the centre of gravity, or it will fall over thus [
14 I |         have lowered the centre of gravity, and now she will stand
15 I |           this force which we call gravity. By observation, moreover,
16 II|        their respective centres of gravity; and, furthermore, you learned
17 II|     because we keep our centres of gravity properly balanced with respect
18 IV|      difference with regard to the gravity of the articles having this
19 V |            we get an attraction of gravity, chemical affinity, adhesion,
20 V |        searching for the centre of gravity of this lath; I want to