664 



INDEX 



PAGE 



Cubes of numbers 1 5 _2 3 



Cubical expansion coefficients: gases 284 



liquids 283 



solids 282 



Cubit, definition 658 



Curie: point, magnetic 107 



radium standard 520 



Current: electric equivalents 397 



Curvature of space 644 



Cylindrical harmonics 68-70 



, roots 70 



5 rays 525 



Dalton 658 



Date line 602 



Day 658 



, sidereal 611 



De Broglie 5 14 



Decibel '93 



Declination, magnetic: annual change 579 



equal 576 



isogonic lines 576 



isoporic " 577 



secular change, U. S 590 



{see also magnetic ele- 

 ments) 581-589 



R. A., to alt. -azimuth 602 



Dekhotinsky cement, properties of 654 



Delta metal, mechanical properties 127 



rays 525 



Demagnetizing factors for rods 470 



Density: air, moist 177. '78 



air to vacuo, reduction of 109 



alcohol, ethyl, aqueous 172, 173 



methyl, " 174 



alloys 163 



aqueous solutions 170, 171 



Baume equivalents 158 



cane sugar, aqueous 174, 175 



castor oil, f (t) 206 



critical, of gases 271 



earth, 5.522 (Birge) 75 



interior 569 



elements, chemical 1 59 



gases 176 



glycerol, aqueous solution 206 



inorganic compounds 254 



liquids 165 



mercury — 10° to +360° C 169 



minerals 1 64 



miscellaneous solids 162 



moist air 177. 178 



organic compounds 256-258 



planets 606 



solids, various 162 



solutions, water 170-175 



stars 623 



sucrose, aqueous solution 174, 175 



sulphuric acid, aqueous solution 174, 175 



water, 0° to 41 C 166 



— 10° to +250° C 168 



woods 161-163 



Developer, pyrogallol 341 



Development, photographic 341 



Diamagnetism 463, 474 



Diameter, elements 548 



molecules 550, 551 



Dielectric constants: (general) xxxii 



crystals 447 



gases, f(p, t) 442 



liquefied 445 



liquids, pressure effect 443 



temperature effect . . 445 



radio-frequencies 454 



Kochelle salt 444 



solids 446 



standard solutions 446 



strength (see also sparking 



potentials) 439-441 



properties, nonconductors, radio-frequen- 

 cies 452 



Dielectrics, surface and volume resistance of solid.. 418 



Differential formulae 12 



Diffraction units, crystals 551 



Diffuse reflecting powers 379 



Diffusion: aqueous solution into water 215 



coefficients, gaseous ions 552 



molecules 547, 552 



PAGE 



Diffusion : gases 217 



integral 60 



ionic 552 



metals into metals 217 



molecules 547, 552 



vapors 21 6-2 1 7 



Diffusivities, thermal 277 



Digit, definition 658 



Dilution, heat of, H 2 S0 4 312 



Dimensional formulae: (general) xxxi, 3, 4 



electric units xxxvii 



electromagnetic units xxxix 



electrostatic units xxxvii 



geometrical units xxxiv 



heat units xxx\ i 



magnetic units xxxvii 



mechanical units xxxiv 



reasoning xxxiv 



Diopter, definition 658 



Dip, horizon 602 



magnetic: annual change 579 



at observatories. 581-589 



declination 576—592 



isogonic lines (world) 576 



isoporic " 577 



latitude and longitude variations... 592 



secular variation 592 



Disk, distribution brightness over sun's 608 



Dispersion glasses 356-359 



. partial 356, 357 



Jena glasses 359 



Displacement constant, VVien's 107 



laws, spectrum series 503 



Distance earth to moon 60 1 



sun 601 



nebulae 639-641 



star clusters: galactic 638 



globular 638 



open 637 



stars 619 



sun from center of galaxy 643 



Dominical letter 603 



Doublet H constant 107 



Drying agents (I. C. T., 3, 385) 



Dyes, transmission of light 385 



Dyne, definition 658 



e, base of natural logarithms, 2.71828 14 



e, elementary charge, 4.770X10- 10 abs. es 



units 88, 92 



e, powers of above 103 



e/m, bound, 1.761x10' abs. em/g 93, 94 



free, 1.769X io 7 abs. em/g 92, 94 



e 1 , e~ x and their logs, x—o to 10 48-53 



x fractional 56 



e x , er x , logs, x=o. 1 to 5.0 54 



e 1 ^/ 4 , e-*"*/*, logs, 1=1 to 20 55 



e irW4. ( e -irW4 i ogs , x=i to 20 55 



el Jf- p—X P r O — X 



— — — , — - — and their logs 41 



Earth: age 57i 



angular velocity 570 



atmosphere 558-568 



atmospheric electricity 596-600 



composition 572 



conductivity, thermal 557 



constants, various 570 



density, 5.522 569, 570 



depths, ocean 569 



dimensions 570 



distance to sun, to moon 601 



elastic constants 569 



electricity, atmospheric 596-600 



elements, % composition 572, 614 



elevations, mountain 569 



energy, rotational 57o 



geochemical data 572 



geodetical data 564-568 



gravity 564-568 



interior: density, pressure 569 



land area 569 



linear rotational velocity 570 



magnetic constants 575 



poles 575 



magnetism (see also magnetism, ter- 

 restrial) 574-595 



