39.(Pg. [87]) We are not sensible of the motion of the earth; what fact is mentioned to illustrate this point?
40.(Pg. [87]) What does this teach us?
41.(Pg. [88]) Would the slowness, or the rapidity of the motion, if steady, produce any sensible difference?
42.(Pg. [88]) If we do not feel the motion of the earth, how may we be convinced of its reality?
43.(Pg. [89]) Were we to deny the motion of the earth upon its axis, what must we admit respecting the heavenly bodies?
44.(Pg. [89]) What distance is an inhabitant on the equator carried in a minute by the diurnal motion of the earth?
45.(Pg. [89]) Why is not the velocity every where equally great?
46.(Pg. [89]) What distance does the earth travel in a minute, in its revolution round the sun?
47.(Pg. [89]) What was formerly supposed respecting the motion of all the heavenly bodies?
48.(Pg. [89]) What do we mean by the Copernican system, and what is said respecting Copernicus and Newton?