INDEX. 



For the definition of units, see Appendix. 



PAGE. 



a rays, absorptive powers for 340 



definition and properties 337 



Aberration constant 109 



Absorption coefficient: air 181, 182 



a-rays 340 



P-rays 340 



V-rays 340 



X-rays .... 335.336 



Absorpton of gases by liquids 144 



Absorption of light: atmospheric . . . 181, 182 



color screens 201 



Jena glasses 199 



various crystals .... 200 



Acceleration of gravity 104-107 



Aerodynamic data: soaring data 125 



wind pressures 124 



Agonic line 116 



Air: density 162 



masses 182 



transmissibility for, of radiation . . 181, 182 



viscosity of 136 



Air thermometer, comparisons 245 



Air: transmissibility of, for radiation . . 181, 182 



Alcohol: density 98-100 



vapor pressure 149 



viscosity 128 



Alloys; densities 87 



electrical conductivity of ... 277-280 



resistance of 273-280 



low temp. . . . 280 



melting-points 222 



specific heats 241 



thermal conductivity 205 



thermoelectric powers 269 



Alternating currents, resistance of wires for . . 297 

 Altitudes, determination of by barometer . . 169 



of a few stations 183 



Aluminum, resistance 284 



wire table, English 292 



metric 293 



Alums: indices of refraction 187 



Antilogarithms 26-28 



Apex, solar motion no 



Aqueous solutions: boiling-points 229 



densities 92 



alcohols 98-100 



diffusion of 138 



electrolytic conductivities 302-308 



Aqueous vapor: pressure 1S4-1SS 



saturated, weight of .... 156 



transparency 182 



Astronomical data 109, no 



Atmosphere, aqueous vapor in .... 157, 1S2 

 transmissibility for radiation 181, 182 



Atomic numbers 336 



Atomic weights 301 



/3 rays, absorption coefficients 340 



Barometer: boiling temperature of water for va- 

 rious heights 170-171 



correction for capillarity . . . .123 



latitude, inch . . . 121 



metric . . 122 



sea level 120 



temperature . . .119 



heights, determination of, by . . 169 



Batteries: composition, electromotive forces . . 262 



Baume scale: conversion to densities .... 81 



Bismuth, resistance of, in magnetic field . . . 333 



" Back-body " radiation 251 



Boiling-points: chemical elements 218 



inorganic compounds . . 219,220 

 organic compounds . . . 223-225 



PAGE. 



Boiling-point, raising of, by salts in solution . 219 

 of water and barometric pressure . 170 



Brick, crushing strength of 68 



Brightness of various lights 178 



British weights and measures 7-10 



V rays, absorption coefficients for 340 



Cadmium line, wave-length of red 172 



Candle, energy from 178 



Candle power, standard 17S 



Calibration curves, for thermo-elements . . . 250 



points, standard, for thermometer . 247 



Capacity, specific inductive: crystals . . . .314 



gases 309 



liquids .... 310 

 liquid gases . . . 312 



solids 313 



Capillarity, correction to barometer for . . .123 



liquids 145-146 



liquids near solidifying point . . . 146 



salt solutions in water 145 



thickness of soap films 146 



Carcel unit 178 



Carrying capacity of wires 279 



Cells, voltaic: composition, E. M. F. . . 262-263 



double-fluid 263 



secondary 263 



single-fluid 262 



standard 261, 263 



storage 263 



Chemical, electro-, equivalents 301 



equivalent of silver . 261, 301 

 Chemical elements: atomic weights .... 301 



boiling-points 218 



compressibility 73 



conductivity, thermal . . 20S 



densities 83, 91 



electro-chemical equivalents 301 



hardness 73 



melting-points 217 



resistance, electrical . 274-276 



specific heats . . . 238, 240 



thermal conductivities . , 20S 



expansion, linear . 232 



Circular functions: argument (°') 32 



(radians) ... 37 



Coals, heat of combustion of 210 



Cobalt, magnetic properties of 321 



Color screens 201-202 



Combination, heat of 2l> 



Combustion, heat of: coals 210 



explosives 211 



fuels (liquid) 210 



peats 210 



Compressibility: chemical elements .... 73 



gases 76-78, 164-168 



liquids 79 



solids 80 



Concretes: resistance to crushing 68 



Conductivity, electrical: see Resistance. 



alloys 277-279 



alternating currents, effect of . 297 

 magnetic field, effect of . . . 333 



electrolytic 302-308 



equivalent . . . 305-308 



ionic (separate ions) . . 308 



specific molecular . . .303 



limiting values 304 



temp'ture coef. . 304 



glass and porc'l'n, temp'ture 



coef 282 



Conductivity, thermal: gases 207 



liquids 207 



