LIST OF ILLUSTRATIONS IN VOLUME n. 



Pao«. 



Polar projection of Earth's northern hemisphere . . .62 



Isothermal map of the United States ..... 72 



Wind-roses : (New York, and New England) . , ,77 



Do. (Illinois, "Wisconsin, Iowa, Pennsylvania) . . 78 



Do. (Oregon, Washington, Nebraska, Kansas) . . 79 



Do. (Texas, New Mexico, S. Carolina, Georgia, Ala., Miss.) 79 



Do. (Lower California) . . . . .80 



Do. (Hudson, Albany, Utica, N. Y.) . . .80 



Dalton's instrument for testing elastic force of aqueous vapor . 216 



Instrument for showing varying elastic force of aqueous vapor . 219 



Instrument for determining the weight of vapor . . 222, 228 



Water bulb used in the same ...... 223 



Ideal section, showing aerial circulation of the northern hemisphere . 275 

 Surface winds of the globe ...... 276 



Ideal section across the equator at the belt of calms . . . 277 



Diagram showing strata of expanding atmosphere . . . 278 



Ocean currents of the western hemisphere .... 284 



Wind and timber map of the United States .... 288 



Motions of the air producing thunder-storms .... 296 



Motions of strata of the atmosphere in larger storms . . . 303 



Production of electricity by means of glass slip and woolen cloth . 315 

 Electroscope, with gold-leaf strips, or suspended pith balls . . 317 



Insulated hollow metallic globe, electrified at surface only . . 322 



Insulated cylinder of wire gauze, showing same . . 323 



Diagram showing resultant of exterior attraction or repulsion . 324 



Diagram showing resultant of interior attraction or repulsion . 325 



Diagram illustrating repulsion through projecting rod or wire . 325 



Illustration of electrical induction ..... 328 



Induction from electrical spark, through two stories of a house . 333 



Induction from distant lightning, shown in study window . . 334 



(V) 



