INDEX 



359 



Carnotite, 174 

 Cassiopeia, 22, 23, 24, 27 

 Cassiterite, 50 

 Castor, 34, 35 

 Catapult, 138, 139 

 Cavello, 1 06 

 Cayley, Sir George, 87 

 Cello, 329 

 Centaur, 41, 42 

 Centrifugal force, 132, 133 

 Cepheus, 24, 25, 27 

 Cetus, 40, 41 

 Ceyx, 31 

 Chalcedony, 54 

 Chalcopyrite, 50, 61 

 Chalk, 56, 60 

 Chanute, 88 

 Charcoal, 159 

 Charioteer, 29, 30 

 Charlemagne's cart, 22 



Chemical: change, 176; equation, 176, 



177 



Chimney, 151; why it draws, 152; why 

 it roars, 332 



Chisel, 349 



Chlorine, in, 167, 170, 172 



Chlorite, 50, 58, 59, 60; characteristics 

 of, 59, 60 



Christ, star at birth of, 18 



Chromatic aberration, 301, 304, 305 



Cinnibar, 50 



Circumpolar stars, 19 



Clarinet, 325, 330, 331 



Clay, 59, 73 



Cleavage, 48, 49 



Clippers, American, 118 



Clutch of automobile, 196, 197 



Coal, 3, 73, 75; anthracite, 74; bitumi- 

 nous, 74; brown, 73; soft, 73; supply 

 of, 75; wastage of, 76 



Cochina limestone, 71 



Coffee mill, 343 



Colors, primary, 307 



Commutator, 236 



Compass, 200; deviation of, 202; inven- 

 tion of, 200; needle and the electric 

 current, 207 



Composition of forces, 80 

 Compounds, chemical, 166, 168 

 Compressed air, 138 

 Conchoidal fracture, 49 

 Condenser, 253; variable, 267 

 Conductors, 153; electric, 225, 226; 



of heat, 153 

 Conglomerate, 73 

 Conjugate foci, 296 



Constellations: circumpolar, 19, 24; 



zodiacal, 35, 37, 39 

 Copper, 45, 47; conductor of heat, 153; 



mines, 47 

 Coracle, 120 

 Coral beds, 71 

 Cornucopia, 30 

 Corona of sun, 5 

 Corundum, 50, 51 

 Corvus, 41 

 Crab, the, 36 

 Crank shaft, 193, 194 

 Cream separator, 133 

 Creosote, 162 

 Cross, northern, 28 

 Crossbow, 136 

 Crowbar, 340 

 Crystal detector, 257 

 Crystalline, 48 

 Crystals, 48 

 Curie, Madam, 173 

 Curtis, Glenn, 95 

 Cygnus, 17, 28, 29 



Damien, Albert, 85 



Damped waves, 255, 256 



Darkroom, 316, 317; appliances, 317; 



lamp, 317 



David and Goliath, 131 

 Days: length of, 1 1 ; of the week, names 



of, 13 



De Bacqueville, 86 

 Decomposition of forces, 80 

 Definite proportion, law of, 168 

 Deneb, 28 

 Denebola, 36 



Density: optical, 292, physical, 292 

 De Rozier, Pilatre, 105; death of, 106 



