Part 2

Venus 7

Planets, inferior and superior 7

" conjunction and opposition of 8

The Earth 8

" form of, demonstrated 9

" diurnal motion of 10

" rate of motion of 10

Equinoxes and solstices 12

The Moon 12

" phases of 13

Mars 14

Jupiter 16

" satellites of 18

Saturn 18

" rings of 19

Uranus 21

Neptune 22

The planetoids 22

" supposed origin of 23

The stellar system 24

Stars, number of 24

The Milky Way 24

Nebulæ 24

Constellations 25

Stars, double 26

" variable 27

Comets 27

THE AIR.