INDEX. 



451 



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, p) . . 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 



formulas [ \ 12 



gamma function ' ' 62 



_ probability 56-57, 60 



Intensity, horizontal, earth iield, 19 1 5 431 



, ■ secular var. . . .4^1 



Intensity, total, earth field, 1915 432 



secular var 432 



International candle standard 260 



electric units '. '.xxxvi 



standards xxxviii 



standard radium 394, 398 



standard wave-lengths .... 266-267 



Intrinsic brightness of various lights 260 



Ionic charge 401,408 



diffusion 405 



mobilities 405 



Ionization potentials 403 



Ions produced by a, /3, y rays 398 



work required to detach 403-404 



Ions, conductance of 352 



heat of formation 246 



Iron, magnetic properties (steels) 365-376 



standard wave-lengths, international . . 266-267 



Isostacy 426 



Isotopes 410 



Joule 197 



Joule magnetic effect 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 391 



Lambert, definition 256, 259 



Latent heat of fusion 240 



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



Latent heat of vaporization: ammonia 232 



forraulffi 232 



steam tables .... 234 



various 231 



Latitude correction to barometer 139—142 



of a few stations 420, 434 



Least squares: formulae 59 



probability integral, arg, hx ... 56 



x/r . . . 57 



inverse ... 60 



o.6745V i/ (ri — i ) 57 



o.6745V i/w(?? — i ) 58 



o.8453Vi/ri( ?; — i) 58 



, ^ o.8453[i/raVra^^] 58 



Leduc tnermomagnetic effect 385 



Lepal electrical units ,.,,,, xxsvii 



PAGE 



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 standai'ds 260 



units 259 



polarized, reflection 295-297 



rotation of plane by substances . . 310 

 rotation of plane, magnetic . 378—383 



reflection of: formulie 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 256-258 



transparency to: crystals 305 



dyes 301 



glasses, American . . 303-304 



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 218-219 



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) 1 18-120 



dielectric constant 357—360 



strength 355 



diffusion, aqueous solutions '. 166 



expansion coefficients ! .' ! 221 



expansion coefficients ! ! ! 221 



fuels, combustion heats ', 242 



magnetic optic rotation , [ 380 



m.agnetic susceptibility '.'.'. 777 



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



refractive indices 289-291 



sound velocity in '. '. . 147 



specific heats . . 228 



surface tensions .' '.' 173—174 



thermal conductivity * ' . .217 



expansion, cubical ....'.*!.' 221 



vapor pressures j_j_jg_ 



viscosity, absolute !! 157-159 



specific, solutions 16-1 



Logarithms: standard 4-place 26 



1000 to 2000 24 



anti-, standard 4-place 28 



.9000 to 1. 0000 30 



Logai'ithmic 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 



M X-ray spectrum 392 



Mache radioactivity unit 398 



Maclauren's theorem 13 



