842 



INDEX. 



BAL 



Balloons, 222 



Bandilore, 103 



Bands of spectrum, 502 



Barker's wheel, 199 



Barium, spectrum of, 503 



Barometer, 232 ; water, 233 ; measure- 

 ment of heights by, 233 ; how to con- 

 struct, 234; cistern, 236; siphon, 

 237 ; aneroid, 239 



Baroscope, 283 



Battery, galvanic, 653 ; Bunsen's, 663 ; 

 Grove's, 660 ; Daniell's, 684 ; Mei- 

 dinger's, 685 ; treatment of, 664 



Beats, 404 



Beaume's hydrometer, 196 



Bellows, hydrostatic, 181 



Bells, vibrations of, 371 



Berzelius' lamp, 15 



Binding screws, 656 



Binocular vision, 533 



Blasts produced by centrifugal force, 

 147 



Bodies, general properties of, 7, &c. ; 

 supported in two points, 109; in 

 more than two points, 114; stability 

 of, 115 ; immersed in a liquid, 187 ; 

 falling in vacuo, 288 



Boiling, 802 



Boiling point, 765, 802 



Bolognian flasks, 774 



Boomerang-top, 303 



Bramah's press, 162 



Breath-figures, 319 



Broach, use of, 100 



Brush discharge, 601 



Bunsen's battery, 663; burner, 16; 

 photometer, 424 



Buoyancy of liquids, 179 



CALCIUM, spectrum of, 494 

 Camera obscura, 475 

 Candle-bombs, 796 



Capillarity, 209 ; experiments on, 210 

 Carbon-di sulphide prism, 481 

 Cartesian diver, 266 

 Celsius' scale, 762 

 Centigrade scale, 762 

 Centigramme, 34 

 Centimetre, 2 



Centre of gravity, 103, 106 

 Centre-punch, 96 

 Centrifugal force, 131 ; experiments on, 



136; drying machine, 146; railway, 



149 



Charge, electrical, 552, 570 

 Chemical action in galvanic batteries, 



682 



CUR 



Chemical effects of electricity, 673 



Chemical harmonicon, 379 



Chimes, electrical, 607 



Chisel, 171 



Chimney, draught in, 785 



Chladni's figures, 368 



Chords, major and minor, 351, 407 



Choroid, 515 



Coatings of Leydenjar, 622 



Coefficients of expansion, 770, 838 



Coercive force, 736 



Coercible gases, 809 



Cohesion, 18, 21; figures, 22 



Coil, primary and secondary, 749 ; 



KuhmkoriFs induction, 751 ; effects 



produced by, 754 

 Collodion, 227 

 Colour, 543 



Communicating vessels, 179 

 Complementary colours, 544 

 Compound pendulum, 128 

 Compression of the terrestrial globe, 139 

 Concave mirrors, 439 ; lenses, 478 

 Concertina, 388 

 Concord, 404 

 Condensation upon surfaces, 316; of 



frictional electricity, 611; of galvanic 



electricity, 652 

 Condensers of electricity, 611 

 Condensing pump, 289 

 Conduction of electricity, 557 ; of heat, 



813; of sound, 336 

 Conductivity of bodies for heat, 813; 



for electricity, 557 

 Conductors of electricity, 559 ; of heat, 



813 

 Cone, double, on inclined rails, 112; 



how to construct, 113 

 Consonance, 407 

 Consonants, 394 

 Constant battteries, 683 

 Contact-electricity, 647 

 Continuous spectrum, 496 

 Convection, 814 



Convex meniscus, 209 : mirrors, 450 

 Cooling by solution of solids in liquids, 



829 ; by evaporation, 831 

 Cork-borers, 9 ; use of, 10 

 Cornet-a-piston, 387 

 Cryophorus, 835 

 Crystalline lens, 515 

 Crystallisation, 215 

 Cube for experiments on centre of 



gravity, 110 



Current of electricity, 655 

 Currents, mutual action of, 693 ; action 



on magnets, 744; detection of, 746; 



direct and inverse, 750 ; Amperian, 



