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 



/3-rays ...... 340 



Y-rays 340 



X-rays .... 335, 336 



Absorptpn 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 i 54-155 



saturated, weight of .... 156 



transparency 182 



Astronomical data 109,110 



Atmosphere, aqueous vapor in .... 157, 182 

 transmissibility for radiation 181, 182 



Atomic numbers 336 



Atomic weights 301 



ft rays, absorption coefficients 340 



Barometer: boiling temperature of water for va- 



. 170-171 



rious heights 



correction for capillarity . . 

 latitude, inch . 



metric 



sea level . . . 

 temperature 



heights, determination of, by 

 Batteries: composition, electromotive forces 

 Baum6 scale: conversion to densities . . 

 Bismuth, resistance of, in magnetic field . 

 "Back-body" radiation 



123 



121 

 122 

 120 

 119 

 169 

 262 

 81 

 333 



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 



Y rays, absorption coefficients for 340 



Cadmium line, wave-length of red 172 



Candle, energy from 178 



Candle power, standard 178 



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 . . 205 



densities 83, 91 



electro-chemical equivalents, 301 



hardness 73 



melting-points . . . . .217 

 resistance, electrical . 274-276 

 specific heats . . . 238, 240 

 thermal conductivities . . 205 

 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 212 



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 porcTn, temp'ture 



coef 282 



Conductivity, thermal: gases 207 



liquids 207 



