IXDKX. 



445 



PAGE 



Index of refraction: miscellaneous, isotropic . . 283 



uniaxial . . . 285 



biaxial . . . 289 



nitroso-dimthyl -aniline . . . 280 



quartz 280 



rock-salt, f(t) 279 



salt solutions 291 



silvine 279 



solids, biaxial .... 286, 289 



isotropic .... 282, 283 



uniaxial .... 284, 285 



standard media for microscope. 294 



vapors 292 



waxes 289 



Induction, self 376 



Inductive capacity, specific: crystals 361 



gases, f(t. i) . . 356-357 



liquids 357 



liq. gases 359 



solids 360 



standard solutions . .360 



Inertia, moments of 70 



Inorganic compounds: boiling points 201 



densities 201 



melting points 201 



soluibilities 169 



Insulators: break-down potentials 364 



dielectric properties . 364 



resistance, thermal 214-216 



electrical "... 331 



Integral: diffusion 60 



elliptic 69 



formula 12 



gamma function 62 



probability 56-57,60 



Intensity, horizontal, earth field, 1915 431 



secular var. . . . 43 1 



Intensity, total, earth field, 1915 . . 432 



secular var 432 



International candle standard 260 



electric units xxxvi 



standards xxxvi ii 



standard radium 394, 398 



standard wave-lengths .... 266267 



Intrinsic brightness of various lights . . . 

 Ionic charge 



diffusion 



mobilities 



lonization potentials 



Ions produced by a, /3, y rays 



work required to detach 



Ions, conductance of 



heat of formation 



Iron, magnetic properties (steels) . . . 



standard wave-lengths, international 



Isostacy 



Isotopes 



Joule 



Joule magnetic effect 



260 



401, 408 



405 



. 405 

 . '. 403 

 . . 398 



403-404 

 . . 352 



. . 246 



365-376 

 266-267 

 . . 426 

 . . 410 



197 

 365 



K X-ray spectrum series 390 



Kerr's constant, magneto-optic 383 



Kinetic energy 436 



molecular 408 



Kundt's constant, magneto-optic 383 



L X-ray series 39 r 



Lambert, definition 256, 259 



Latent heat of fusion 240 



Latent heat of pressure variation liq. ammonia . . . 232 



Latent heat of vaporization: ammonia ..... 232 



formulse 232 



. 234 



steam tables . 

 various . . . 



Latitude correction to barometer 



of a few stations 



Least squares: formulse 



probability integral, arg, hx 

 x/r 

 inverse 



Q.6745VV (ni) 



0.845 3 [i/Wn 



. . 231 

 139-142 



420, 434 



59 

 . . 56 



57 

 . . 60 



57 

 . . 58 

 . . 5S 



58 



Length, standards of xxxiv, 5 



Light: eye, sensitiveness of to 256-258 



flux, definition 259 



intensities on various days 256 



lambert, definition 256 



least visible to eye 261 



mechanical equivalent 261 



photometric standards 260 



units 259 



polarized, reflection 295297 



rotation of plane by substances . .310 

 rotation of plane, magnetic . 378383 



reflection of: formulae 297 



function of " n " 297 



reflecting power: metals 295-298 



pigments 299 



powders 300 



rough surfaces . . . . . 299 



scattered light 300 



temperature variation . . .300 



sensitiveness of eye to 256258 



transparency to: crystals 305 



dyes 301 



glasses, American . . 303304 



Jena 302 



water 307 



velocity of 408, 414 



wave-lengths: cadmium std. line 266 



elements 269-271 



Fraunhofer lines 265 



solar, Rowland 272 



Std. iron lines .... 266-267 



Lights, brightness of various 260 



color of various 261 



efficiency of various electric 262 



photographic efficiency of 264 



visibility of white lights 260 



Light-year 414 



Limits of spectrum series 276 



Linear expansion coefficients 218219 



Liquids: absorption of gases by 172 



Baume density scale 109 



capillarity of 173 174 



combustion heat, fuels 242 



compressibilities 107 



conductivity, thermal 217 



contact emf 314-316 



densities 115-117 



mercury, f(t) 121 



water, f(t) 118-120 



dielectric constant 357360 



strength 355 



diffusion, aqueous solutions 166 



expansion coefficients 221 



expansion coefficients 221 



fuels, combustion heats 242 



magnetic optic rotation 380 



magnetic susceptibility 377 



potential dif. with substances .... 314-316 



refractive indices 289291 



sound velocity in i 47 



specific heats 228 



surface tensions 173174 



thermal conductivity 217 



expansion,, cubical 221 



vapor pressures 175-187 



viscosity, absolute 157-159 



specific, solutions 163 



Logarithms: standard 4-place : 26 



1000 to 2000 24 



anti-, standard 4-place 28 



.9000 to i. oono 



Logarithmic functions 40 



Longitudes of a few stations 420, 434 



Long-wave transmissions 309 



Loschmidt's number 408 



Lowering of freezing points by salts 208 



Lubricants for cutting tools 154 



Lumen 259 



Luminosity of black-body, f(t) 261 



Lunar parallax 414 



Lux 259 



0.45 3 in i ...... 5 



Leduc thermomagnetic effect ......... 385 



Legal electrical units ........... xxxvli 



M X-ray spectrum . . 

 Mache radioactivity unit 

 Maclauren's theorem 



' 39 o 



. 398 

 . 13 



