670 



INDEX 



PAGE 



Magnetic properties: Villari effect 463 



Wiedemann effect 463 



units 1U. Uv 



equivalents 397 



Magnetism, terrestrial: agonic line, U. S., 



1800-1925 595 



charts: isoclinic, I, world.. 576 

 isodynamic, H, 



world 577 



isogonic, D, world. . 576 

 isoporic: 



D 577 



H 577 



I 578 



total intensity . . 580 



vertical intensity. 580 



constants of earth 574. 575 



declination : 



annual change, world.. 579 



isogonic lines, ' . . 576 



isoporic " " . . 577 



secular change, U. S... 59o 



dip: annual change, world.. 579 



f(lat., long.), U. S. .. 592 



isoclinic lines, world. . 576 



isoporic " " . . 578 



secular change, U. S. . 592 



horizontal intensity: 



annual change, world. . . 579 



f(lat., long.), U. S 593 



isodynamic lines, world 577 



isoporic " " 578 



secular change, U. S... 593 

 inclination (see dip) 

 isoclinic lines, I, world 



chart 576 



isodvnamic lines, H, world 



chart 577 



■ isogonic lines, D, world 



chart 576 



isoporic lines: 



D, world chart 577 



H, " " 578 



I. *' " 578 



intensity, total, world.. 580 

 vertical, world 580 

 mean annual observatory ele- 

 ments 581 



mean annual observatory ele- 

 ments, bibliography .... 589 

 mean monthly magnetic 



characters, 1906- 1930.. 595 

 observatories, mean annual 



elements 581 



observatories, mean annual 



elements, bibliography . . 589 



poles, magnetic 575 



secular change, 



declination, U. S., 



1820-1930 590 



dip, U. S., 1855-1925. 592 

 horizontal intensity, 



U. S., 1855-1925.- 593 

 inclination, U. S., 



1855-1925 592 



total intensity: 



f(lat., long.), U. SL, 



1925 594 



isoporic lines, world 



chart 580 



secular change, U. S., 



1855-1925 594 



vertical intensity: 



isoporic lines, world... 580 



Magneton, Bohr (I. C. T., 6, 346) 106 



Magneto-optic rotation: gases 479 



Kerr constant 480 



Kundt " 479 



liquids 478 



solids 477 



solutions 478 



Verdet's constant ..476 et seq. 



Magneto-optics 575 



Magnitudes: absolute (M) to apparent (m) 602 



.binary stars ....629, 631 



bolometric to visual. . 624 



candle, of standard 623 



Magnitudes: absolute, cepheids 635 



dwarf stars 636 



first magnitude stars 619 



giant stars 636 



high-density stars 636 



high-temperature stars 636 



nearer stars 619 



planetary nebulae 623 



Russell diagram 621 



vs. parallax, t 624 



spectrum class. 621, 622, 624 



apparent: binaries 629, 630 



bolometric, visual to 624 



definition 602, 623 



first magnitude stars 619 



Magellanic clouds 640 



moon 623 



nebulae, planetary 639 



radial velocity stars 628 



radiometric 632 



space (large) velocity stars. 627 

 (small) " " . 627 



stars, near sun 619 



per magnitude 620 



sun 623 



Venus 623 



vs. parallax 624 



spectrum class 620 



visual to bolometric, correc- 

 tions 624 



astronomical, definition 602, 623 



Malleable cast iron, physical properties 657 



Mass: alpha particle 105 



electronic, 9.0 x io _2s g 105 



H atom 105 



proton 105 



relativity correction 492 



Masses: spectroscopic, binaries 620 



stellar 619, 623, 629-631 



Mathematical constants 14 



tables: antilogarithms, 4-place ....28-30 



Bessel's functions 70 



circular " 32-40 



constants 14 



cubes 15 



cylindrical harmonics 68-70 



derivatives 12 



differentials 12 



diffusion integral 60 



elliptic integrals 71 



exponential functions 48—64 



integral 62 



factorials, 1 to 20 47 



gamma function 64 



hyperbolic functions 41 



integrals 12 



least squares 56-59 



logarithms, 4-place 24-27 



probability integral 56, 57 



inverse. 60, 61 



reciprocals 15 



series 15 



square roots 15 



squares 15 



zonal spherical harmonics ... 66 



Matter, interstellar 644 



vs. energy 645 



Maxwell 397. 403. 463 



Mean free path, air molecules 563 



molecules 550 



Measurements, theory of xxxii 



Measures: English, metric, United States 5-1 1 



Mechanical effects of radiation 501 



equivalent of heat 86, 87 



light 335 



properties: (general) no et seq. 



alloys, miscellaneous 124 



aluminum 1 1 6 



alloys 117 



solder 124 



Babbit metal 125 



bell " 120 



belting, leather 130 



brasses 120 et seq. 



naval 121 



red 1 21-122 



yellow 121 



