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?