IN'DEX. 



843 



CUR 



701; magnetisation by, 704; in a 



heated liquid, 777 

 Curvature of liquid surfaces, 209 

 Cylinder, volume of, 6 



DANIELL'S battery, 684 

 Dark lines of the spectrum, 505, 

 507 



Decigramme, 34 



Decimetre, 2 



Declination, magnetic, 741 



Decomposition, chemical, by current, 

 673 ; of white light, 480 



Deflection of a magnet by currents, 

 744 



Degree of a thermometer, 762; of a 

 circle, 72 



Density, 39 ; electrical, 587 ; maximum 

 of water, 778 



Depression of liquids in capillary tubes, 

 210 



Deviation of light by a prism, 460 ; 

 angle of, 459 



Diameters of the earth, 139 



Diathermancy, 810 



Die-stock, 93 



Diffusion of liquids, 215 ; of gases, 

 321 



Dip, magnetic, 742 



Disc acted on by centrifugal force, 142; 

 Newton's, 541 



Discharge, electrical, heating effects of, 

 629 ; luminous effects of, 635 ; me- 

 chanical effects of, 639 ; magnetic 

 effects of, 643 ; velocity of, 644 



Discharger, 626 ; Henley's, 634 



Discord, 404 



Dispersion, 480 



Dissonance, 406 



Distance, adaptation of eye to, 517 ; of 

 distinct vision, 519 



Distillation, 794 ; apparatus for, 794 



Distribution of electricity upon conduc- 

 tors, 584 ; experiments on, 591 



Diver, Cartesian, 266 



Divisibility, 32 ; experiments on, 32, 

 33 



Division of circle, 72 



Draught of chimney, 785 



Drills,. 27 



Drill- stock, 99 



Duration of electrical spark, 644 



EARTH, magnetic poles of, 741 ; 

 magnetisation by. 743; figure of, 

 138; compression of, 139 



FAL 



Ear-trumpet, 338 



Ebullition, 792 



Echo, 342 ; multiple, 344 



Eclipse of the sun, 419; of the moop, 

 419 



Efflux from orifices, 199 ;. of gases, 301 



Elasticity, 153 



Electrical attraction, 553 ; repulsion, 

 555 



Electric batteries, 653; bells, 726; 

 charge, 552, 570 ; chimes, 607 ; 

 density, 587 ; discharge, 600 ; glow, 

 601; light, 671; machine, 593; 

 mortar, 642 ; poles, 654 ; shock, 626; 

 spark, 635; telegraph, 718; tension, 

 586 ; whirl, 605 ; wind, 604 ; pendu- 

 lum, 553 



Electricity, 551 ; atmospheric. 646 ; 

 contact, 647 ; development of, by 

 friction, 551; distribution of, 584; 

 frictional, 551; loss of. 590; me- 

 chanical effects of, 639 ; induction of, 

 563 ; velocity of, 644 ; different kinds 

 of, 556 



Electrodes, 673 



Electrolysis, 673 



Electromagnetism, 700 



Electromagnets, 704 



Electromagnetic machine, 713 



Electrometallurgy, 690 



Electromotive force, 648 



Electrophorus, 575; construction of, 

 578 



Electroscope, 568 construction of, 572 



Emery-powder, 156 



Emissive power, 812 



Endosmose, 217 



Eolipyle, 797 



Equator, magnetic, 742 



Equilibrium of bodies, 43, 103 ; neutral, 

 106; stable, 105; unstable, 105; of 

 floating bodies, 194 



Evaporation, 792; cooling by, 832; 

 latent heat of, 824 



Expansion, 54 ; apparent and absolute, 

 781 ; of liquids, 758 ; of solids, 757 ; 

 of gases, 758 ; linear, 770 ; super- 

 ficial, 770; cubical, 770: force of, 

 771; effects of, 771; during solidi- 

 fication, 791 



Expansive force of air shown, 13 



Experiment, Leidenfrost's, 804 



Extension, 1 



Eye, structure of, 514 



FALLINOr bodies, motion of, 59 ; cal- 

 culation of space traversed by, 61 



