XX CONTENTS. 



251.— Vapor as one of tho Causes of the Trade-winds, 252.— Black's Law, 253. — 

 Tlic latent Heat transported in Vapor, 254. — The Eftcct of the Deserts upon the 

 Trade-winds, 255. — Indications of a Crossing at the calm Belts, 25G. — The coun- 

 ter Trades — they approach the Bole in Spirals, 257. — They turn with the Hands 

 of a Watch about the south Bole, o/jainst them about the north, 258. — The Arrows 

 in the Diagram of the Winds, 259. — The Offices of Sea and Air in the physical 

 Economy, 2G0. — Bowerful Machinery, 2G1 Bage 71 



CHABTER V. 



IIAINS AND RIVERS. 



Bivers considered as Rain-gauges — the ten largest, § 270. — Heat required to lift Va- 

 por for these Rivers, 271. — Rain-fall in the Mississippi Valley, 272. — Its Area, 

 and the latent Heat liberated during the Broccsses of Condensation there, 273. — 

 Annual Discharge of the Mississippi River, 274. — Bhysical Adaptations, 275. — 

 Wliencc come the Rains for the Mississipi)i, 27G. — The northeast Trades of th3 

 Atlantic suj)ply Rains only for the Rivers of Central and South America, 277. — 

 The calm Belt of Cancer furnishes little or no Rain, 278. — The North Atlantic 

 insufficient to supply Rain for so large a Bortion of the Earth as one sixth of all 

 the Land, 279. — Daily Rate of Evaporation at Sea less than on Land — Observa- 

 tions wanted, 280. — Rivers are Gauges for the Amount of clFective Evaporation, 

 281. — Importance of Rain and River Gauges, 282. — Ilypsometry in the North At- 

 lantic peculiar, 283. — Limited Capacity of Winds to take up and transport, for 

 the Rivers of Europe and America, Vapor from the North Atlantic, 284. — The 

 Vapor-springs for all these Rivers not in the Atlantic Ocean, 285. — The Blaces in 

 the Sea whence come the Rivers of the North, discovered — proves the Crossing at 

 the calm Belts, 28G. — Spirit in which the Search for Truth should be conducted, 

 287. — The Number of known Facts that are reconciled by the Theory of a Cross- 

 ing at the calm Belts, 288. — The Atmosphere to be studied, like any other Ma- 

 chinery, by its Operations, 289. — Arguments furnished by the Rivers, 290. — More 

 Rain in the northern than in the southern Hemisphere, 291. — The Trade-winds 

 the evaporating Winds, 292.— The saltest Bart of the Sea, 293.— Seeing that the 

 southern Hemisphere affords the largest evaporating Surface, how, unless there be 

 a Crossing, could we have most Rain and the great Rivers in the northern ? 294. 

 — The rainy Seasons, 295. — The rainy Seasons of California and Banama, 296. — 

 TJie rainless Regions, 297. — The rainy Side of Mountains, 298.— The Regions of 

 greatest Brecipitation, Cherraponjie and Batagonia, 299. — Amount of Evaporation 

 greatest from the Indian Ocean, 300. — The Rivers of India, and the Measure of 

 the effective Evaporation from that Ocean, 301. — Bhysical Adjustments, 302. — 

 Adaptations, their Beauties and sublimity, 303 99 



CHABTER VI. 



RED FOGS AND SEA BREEZES. 



The Alternations of Land and Sea Breezes, § 311. — The Sea Breeze at Valparaiso, 

 312. — The Contrast, 313. — Land and Sea Breezes along the Shores of intertrop- 

 ical Countries, 314. — Cause of Land and Sea Breezes, 315. — Lieutenant Jansen 

 on the Land and Sea Breezes in the Indian Archipelago, 31G. — Sanitary Influ- 

 ences of Land and Sea Breezes, 317. — Influences which regulate their Strength, 

 318. — Land Breezes from the west Coast of Africa scorching hot, 319. — Land 

 Breeze in Brazil and Cuba, 320. — Night Scenes when sailing with the Land 



