CHAPTER XXII. 



Tab. XXXIX. 



Fie. 1, 2. The remarkable ring which surrounds the planet 

 Saturn. 



Fig. 3. The earth an oblate spheroid. See p. 221. 



Fig. 4. See p. 224. 



Fig. 5. See p. 226. 



Fig. 6. Centripetal forces illustrated, pp. 222, 229. 



