Water, forms of, 114, 115, 233; transformed into air, 120; formed from earth, 120; as one of the four elements, 124; Thales’ opinions on, 124, 231; underground sources of, 126, 233, 234, 235; various tastes of, 133; petrifying powers of, 133; varying temperatures of, 136; artificial heating of, 136; baneful kinds of, 137; dyeing properties of some kinds of, 137; varying densities of, 138; supposed physiological effects of some, 140; in mines, 154; produces animal and plant life, 197; as the cause of earthquakes, 231, 233, 234. Watergalls and sun-dogs, 33. Weather indications, 11, 14, 15, 28, 37, 39, 75, 181, 275, 302, 303. Wells and their water-supply, 118, 123, 128; warm winter temperature of, 176, 241. Whirlwinds, 204, 275, 276, 278, 279, 280, 281, 282. Will, freedom of the, 85, 86. Wind, definition of, 193; Democritus’ view of origin of, 194; origin of, 196, 200, 203, 204; within the earth, 205, 206, 239, 243, 244; number and names of the winds, 208–212; teleological design of, 212, 216; misuse of, by man, 216; beneficial influences of, 216; disruptive energy of, 252. Winds, 208–211. The following are specified: Africus, Aquilo, Argestes, Atabulus, Auster, Ἀφηλιώτης (= Subsolane), Boreas, Cataegis, Circius, Corus, Etesian, Euronotus, Eurus, Favonius, Iapygian, Καικίας, Libonotus, Libyan, Notus, Scironian, Septemtrio, Subsolane, Thracias, Vulturnus, Zephyrus. Wine, frozen by lightning, 79, 97. World, revolution of, 20. ^_a_ Zeno, 291. Native of Cyprus, founder of the Stoic philosophy, lived between middle of fourth and third centuries B.C. Zephyrus (Wind), 208. Zodiac, 285, 291, 296. THE END _Printed by_ R. & R. CLARK, LIMITED, _Edinburgh_.