INDEX 355 



Clouds, as sources of lightning and thunder, 10, 62, 63, 64, 

 75, 203; invisible when we are within them, 24; com 

 position of, 24; compression of, causes thunder, 67; 

 produce fire, 70, 74, 100; must be burst before they 

 emit sound, 76, 98; not necessarily connected with wind, 

 195; as sources of wind, 203, 204. 



Cloud- winds, 203. 



Colours (in rainbow), origin of, 21, 25, 30, 31. 



Comets, infrequency of, 272, 288, 301 ; what are they? 272 ; 

 points of resemblance of, to planets, 273; resemblance 

 to meteors, 275, 276; classes of, 276, 290; not due to 

 wind, 278, 279-282 ; curved path of, 279 ; long visibility 

 of, 282 ; distribution and shape of, 283 ; Greek classifica 

 tion of, 283; different from the planets, 284; examples 

 of, 288, 290; vast orbits of, 290, 297, 302; vary in 

 apparent size as they advance or retreat, 291 ; trans 

 parency of, 291, 300; Stoic opinions regarding, 291-294; 

 directions of, 294, 303, 304 ; Seneca s opinion, 295, 305; 

 form of, 300 ; portents from, 302. 



a Conon, 274. Astronomer; born at Samos ; lived at Alex 

 andria about 250 B.C. Said to have been a friend of 

 Archimedes. 



Constellations, 301. 



Contentment, duty of, 112. 



Continuity or unity, defined, 53. 



Corus (Wind), 210. 



Corycian (Mt.), 122. The district round Corycus in Cilicia 

 was famous for saffron. 



Crassus, 215. Celebrated Roman, slain in battle in Mesopo 

 tamia, 53 B.C. 



Crete, 123, 153 (adj.). 



Crispus Passienus, 160. Stepfather of Nero. Consul in 42. 



Crocodiles and dolphins, fight between, 171 ; chase of, 172. 



Cutiliae, 139 (2). In the Sabine country, N.E. of Rome. 



Cyclades, 147. Group of islands in Grecian Archipelago. 



Cyclopes, 91. Jove s fabled armourers with workshops beneath 

 Etna, Stromboli, etc. 



Cyprus, 259. 



Dacian, 5. 



Danube, as a political boundary, 5, 233 ; alleged remarkable 



character of, 135; floods of, 146; contrasted with the 



Nile, 166; not swollen in winter, 173. 

 Darius, 254. King of Persia, 521-485 B.C. 

 Death, to be faced without fear, 103, 223, 226, 265-268; 



