356 PHYSICAL SCIENCE 



equalises mankind, 223 ; the introduction to a better 



place than earth, 267. 

 Delos, 258, 259. Perhaps the most famous of "the isles of 



Greece." 



Deluge, that is to destroy the earth, 143. 



a Demetrius, 161. 'Cynic philosopher, contemporary of Seneca. 

 Demetrius (father and son), 288. Kings of Syria between 



162 and 125 B.C. 

 a Democritus, 183 (2), 194, 249, 250, 276. The optimist or 



" laughing philosopher " of Abdera in Thrace ; said to 



have lived 460-361 B.C. 

 "Diogenes (of Apollonia in Crete), 68, 176, 177. Pupil of 



Anaximenes, lived in fifth century B.C. 

 Dnieper (Borysthenes), 174. 

 Dog-star, 202. 



Dolphins and crocodiles, fight between, 171. 

 Doris, translated " sea nymph " in the quotation from Virgil, 



142. 



Dowsers, 127. 



Drops, globular form of, 178. 

 Drunkenness, 134, 188. 



Earth, material of, formed from water, 120, 121. 



Earth as a whole, place of the, in universe, 5 5 ; formed after 

 the plan of our bodies, 126, 151, 242, 255; final de- 

 struction of, 143 ; itself the cause of earthquakes, 237 ; 

 whether it or the universe revolves, 273. 



Earth's interior, water supply in, 119, 206, 233, 234; cold 

 temperature of, 119, 121; like surface above ground, 

 128, 206; blind animals in waters of, 129; origin of 

 wind within, 206, 239, 243, 244, 254; landslips in, 238, 

 249, 251; store of vital air in, 244, 245. 



Earthquakes, causes of, 51, 229, 230, 236, 249; effects of, 

 121, 221, 229, 257, 259, 262, 263; Campanian (of A.D. 

 63), 221, 257, 259, 262, 264 ; influence of, on the human 

 mind, 222, 262 ; widespread destruction produced by, 

 223 ; not the work of angry gods, 228 ; Seneca's youth- 

 ful work on, 230; water as the origin of, 231; fire as 

 the origin of, 236, 238; air as the origin of, 239-248, 

 251, 255, 256, 264; mixed sources of, 249; varieties of 

 movement in (tnclinatio, sucatssio, tremor), 252 ; most 

 frequent near the sea, 255 ; cause of local extent of, 257; 

 features of the Campanian, 259-264; the first shock of, 

 the most violent, 264. 



Eclipses, 35, 274, 284, 293. 



