Part 40

26. (Pg. 85) What is said of Jupiter?

27. (Pg. 85) What of Saturn?

28. (Pg. 85) What of Herschel?

29. (Pg. 85) Why do we conclude that the moons of Saturn afford less light than ours?

30. (Pg. 85) In what proportion will the light and heat at Saturn be diminished, and why?

31. (Pg. 86) What do the comets resemble, and what is remarkable in their orbits?

32. (Pg. 86) What is said of the number of comets?

33. (Pg. 86) What is a constellation?

34. (Pg. 86) How are the twelve constellations, or signs, called the zodiac, situated?

35. (Pg. 86) Name them.

36. (Pg. 86) What is meant by the sun being in a sign?

37. (Pg. 86) What causes the apparent change of the sun's place?

38. (Pg. 87) The stars appear of different magnitudes, by what may this be caused?

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?

49. (Pg. 90) What circumstance is said to have given rise to the speculations of Newton, on the subject of gravitation?

CONVERSATION VIII.

ON THE EARTH.

OF THE TERRESTRIAL GLOBE. OF THE FIGURE OF THE EARTH. OF THE PENDULUM. OF THE VARIATION OF THE SEASONS, AND OF THE LENGTH OF DAYS AND NIGHTS. OF THE CAUSES OF THE HEAT OF SUMMER. OF SOLAR, SIDERIAL, AND EQUAL OR MEAN TIME.

MRS. B.