440 



INDEX 



Calcium phosphate, 276 



Calorie, 137, 380 



Calyx, 318 



Cambium layer, 326 



Camera, 223, 229, 237 



Candle power, 223 



Canis major, 10 



Canker, 344, 346 



Cafions, 307 



Capillaries, 89 



Capillarity, 48 



Capillary water, 289, 297, 310 



in soils, 289, 290, 297 

 Carbohydrates, 328, 389 

 Carbolic acid, 262, 435 

 Carbon, 203, 257 



compounds of, 259 

 Carbonates, 270 

 Carbon dioxide, 73, 257, 267, 268, 



321, 328, 331 

 Carburetor, 243 

 Carpels, 318 t 



Casein, 388 

 Cassiopeia, 10 

 Cathode, 208 

 Caves, 300 



Celestial Meridian, 19 

 Cells, electric, 200 



voltaic, 200 



polarized, 201 



gravity, 201 



dry, 201 



of living matter, 316, 317, 319, 351 

 Cellulose, 323, 390 

 Centigrade scale, 98, 100, 129 

 Center of gravity, 39 

 Cepheus, 10 

 Charcoal, 84, 260, 261 

 Chemical changes, 95, 222, 246, 247 



source of heat, 127 

 Chile saltpeter, 87, 254, 274, 293 

 Chinch bug, 366 

 Chloride of lime, 255 

 Chlorine, 255 

 Chlorophyll, 326, 390 

 Choroid coat, 236 

 Cilia, 352 



Ciliary ligament, 237 

 Ciliary processes, 237 

 Cinematograph, 41 

 Citric acid, 273 

 Cities, growth of, 406 



problems of, 407 



cleaning streets of, 418 



Climate, 152, 283 



Clothing, 361 



Clouds, 175 



Coal, 259, 261 



Cochlea, 217 



Cocoa, 395 



Codling Moth, 366 



Coffee, 395 



Cohesion, 46 



Coke, 84, 261 



Colds, 91, 424 



Cold storage, 110, 381 



Color, 233 



Combustion, 83, 247 



Comets, 2, 5 



Compounds, 27, 247, 272 



of carbon, 259 



classes of, 272 

 Compressed air, 80 

 Compression, 126, 127 

 Concave lens, 228 

 Condensers, 197 

 Conduction of heat, 140, 141 

 Conductivity, 140 



of earth, 142 



and sensation, 142 



of metals, 251 

 Conductors, 193, 197, 277 

 Conjunctiva, 235 

 Conservation, 291 



of soil, 291 



of rainfall, 297 



of energy, 397 

 Constellations, 8, 9 

 Convection, 143-145 

 Convex lens, 228 

 Copper, 252 

 Copper sulphate, 275 

 Cornea, 236 

 Corolla, 318 

 Cotton, 340 

 Cotton boll weevil, 363 

 Crystalline lens, 230 

 Crystallization, 104 

 Crystals, 104 

 Cultivation, soil, 296 

 Curculio, 365 

 Cyclones, 165 

 Cyclonic winds, 165 



Dairy, model, 413 

 Davy safety lamp, 143 

 Decay, 284, 285, 413 

 Declination, 190 



