INDEX 



475 



Centrifugal force, 27 

 Cerebrum, 398 

 Charcoal, 51, 112 

 Charring, 110 

 Chemical, changes, 94, 362 



engine, 120 

 China, 260 



Chlorides, tests for, 195 

 Chlorine, 103, 104 



in soil, 275 



Chlorophyll, 104, 164, 286 

 Chrysalis, 323 

 Chyle, 358 

 Cigarettes, 387, 408 

 Cilia, 303, 384 

 Ciliary muscles, 418 

 Circuit, 96, 137 

 Circulation, of air, 218 



of blood, 372 

 Citric acid, 189 

 Clam, 319 

 Clavicles, 343 

 Climate, 232 

 Clothing, 71, 197, 201 

 Clouds, 237, 238 

 Cloudbursts, 240 

 Coagulation, 378 



filters, 82 

 Coal, 110 

 Coal tar, 117 

 Cohesion, 28, 65 

 Coke, 115 

 Colds, 387, 442 

 Cold storage, 85 

 Collision, a source of heat, 73 

 Color, 162 



Coloring matter, 190 

 Combustion, 48 

 Compass, 125 

 Composition of water, 95 

 Compounds, 95, 96 

 Compression of gases, 68 

 Concave, 30 

 Concrete, 260 

 Conduction of heat, 63 

 Conductors, 131 

 Conglomerate, 259 

 Conifers, 306, 308 

 Connective tissue, 340 



Convection, 63, 215, 220 



Convex, 29 



Coral, 122 



Core of earth, 38 



Corn, 277 



Cornea, 417 



Corolla, 297 



Corpuscles, 313, 377, 410, 427 



Corrosion of metals, 190 



Cortex, 291 



Cotton, 116, 201 



Cotyledons, 284= 



Crabs, 320 



Cranium, 342 



Crayfishes, 320 



Cream, 88 



Crops, 277 



Crust of earth, 38, 258 



Crustaceans, 320 



Crystalline lens, 416 



Crystals, 66, 89 



Cultivating, 272 



Current, electric, 136 



Currents and magnetism, 138 



Curvature, 418 



Cyclones, 246 



Cylinder, 23, 42 



Dairying, 277 

 Daniell's cell, 137 

 Davy, Sir Humphrey, 114 

 Daylight, 158 

 Decay, 39 

 Delta, 267 

 Dendrites, 396 

 Density, 31, 32 



of air, 233 

 Dermis, 388 

 Detritus, 264 

 Dextrose, 349 

 Dew, 236 

 Dewar bulbs, 56 

 Dew point, 237 

 Diamond, 110 

 Diaphragm, 338, 382 

 Dicotyl, 285, 291 

 Diet, 363 

 Dietetics, 363 

 Diffraction of light, 163 



