10 



FIRST TEAR SCIENCE 



References are to pages. 



Thermometers 49 



Fahrenheit and Centigrade . 51 



Thunder-storms 163 



Tides 284 



flood and ebb 284 



. in Bay of Fundy 285 



spring and neap 287 



Tidewater . . 400 



Timber line 256 



Time, measurement of . . 23, 28, 29 



standard 30-32 



Toadstools 211 



Tobacco 237 



Tornadoes 167 



pictures 168, 169 



Torrid zone 25-28 



Tox'ins 216 



Trade winds 149 



maps of 149, 150, 151 



Transference of heat, see Heat. 

 Transformation of heat, see 



Heat. 

 Tropics 27 



map 25 



Tse'tse fly 218 



Typhoid fever 216 



Universe, ancient ideas of 

 medieval sketch of 



3, 22 

 22 



Valleys (see Rivers) . . 332-361 



hanging 378 



picture 378, 379 



V-shaped 377 



Veins . . 228 



Ventilation 117 



Ven'tricle 229 



Venus 4, 5 



Vertebrates 224-235 



Vesta 6 



Vesu'vius 443 



Vit'reous humor 231 



Volcanic cones 451 



Volcanic necks 448 



Volcanoes 440 



decapitated (caldera) . . . 450 



distribution of 452 



Mount Lassen 442 



of Hawaii 449 



of the Aleutian Islands . . . 448 



Volcanoes Continued 



of the Azores 446 



of the U. S 447 



Pelee 445 



Vesuvius 443 



Water, characteristics .... 71 



coasts 69 



obtained by evaporation . . 289 



of the globe 68 



of the sea 273 



properties 73 



soil water 96 



specific heat 56, 57 



temperature 139 



work of (erosion) 325 



See Moisture, Rainfall, the Sea. 



Waterspouts 168 



picture 171 



Waves of the sea . . . 277-2f 9 



effect upon coasts . . . 294-301 



Weather, changes in . . 171-174 



maps 136 



Weather bureau 174 



Weathering 82 



See Soils. 



Weight 10 



Whale 249 



Winds 142 



anemometer 144 



causes 143 



dust 386 



effects of earth's rotation upon 146 



kinds 144, 145 



maps 149, 150, 151 



of the earth 149-154 



seasonal, monsoons, etc. . 152-154 



velocity 144 



wind-belts, planetary . . . 148 

 work 



burying 387 



erosion 387 



Winter 24 



Worms 220 



Year, length of 23 



Yeast ... . 211 



Zones 



25-28 



