LIST OF ILLUSTRATIONS 

 CHAPTER I 



PAGE 



Children Sailing Their Boats on a City Park Pond, Frontispiece 



FIGURE 



1. The Corona of the Sun 5 



2. Sun Spots 6 



3. Diagram to Show Relative Sizes of the Planets .... 7 



4. Diagram of the Earth in Its Orbit to Show Varying Lengths of 



Day and Night and Change of Seasons 10 



5. Diagram of Path of the Earth to Show Cause of the Tides . 14 



6. Diagrams of the Earth's Equatorial Bulge and Its Action in 



Causing the Precession of the Equinoxes 15 



7. Ursa Major, the Big Bear 20 



8. Bootes, the Hunter .......... 21 



9. Cassiopeia 23 



10. Diagram to Show the Method of Finding the Circumpolar Con- 



stellations 24 



11. Cepheus 25 



12. Andromeda 26 



13. Pegasus 27 



14. Draco, the Dragon 28 



15. Cygnus, the Swan . . 29 



1 6. Auriga, the Charioteer 30 



17. Taurus, the Bull 32 



1 8. Orion and His Dogs, Canis Major and Canis Minor ... 33 



19. Gemini, the Twins 34 



20. Aries, the Ram 36 



21. Diagram to Show the Method of Finding Some Zodiacal Con- 



stellations 37 



22. Leo, the Lion 37 



23. Virgo, the Virgin . 38 



24. A Group of Southern Constellations Named in Commemoration of 



the Flood 41 



CHAPTER II 



25. Soil Underlain by Rock . . 46 



26. Crystals 48 



