TABLES. 13 
Page. 
83. Viscosity of hydrogen 262 
84. Viscosity of air 263 
85. Viscosity of air, miscellaneous tests . . 265 
86. Viscosity of air, miscellaneous tests 267 
87. Viscosity of hydrogen 268 
88. Viscosity of hydrogen 269 
89. Viscosity of air 269 
90. Successive value oirj 271 
91. Calculated zero values of — 278 
92. Temperatures measured thermo-electrically and by the transpira- 
tion pyrometer 283 
93. Transpiration of air under variable pressure, burner not chimneyed. 287 
94. Transpiration of air under variable pressure, chimneyed burner. .. 288 
95. Transpiration of air under variable pressure 288 
96. Apparent viscosity of air at high temperatures ; absolute measure- 
ment 290 
97. Apparent viscosity of air at high temperatures ; absolute measure- 
ment 290 
98. Apparent viscosity of air at high temperatures ; absolute measure- 
ment 291 
99. Apparent viscosity of air at high temperatures ; absolute measure- 
ment 291 
100. Apparent viscosity of air at high temperatures ; absolute measure- 
ment 292 
101. Apparent viscosity of air at high temperatures; differential 
measurement 294 
102. Apparent viscosity of air at high temperatures; differential 
measurement 294 
103. Apparent viscosity of air at high temperatures; differential 
measurement 294 
104. Transpiration and pressure in wide tubes 297 
105. Transpiration and pressure in glass tubes 298 
106. Transpiration and pressure in silver tubes 299 
107. Transpiration and pressure in platinum tubes, air 299 
108. Transpiration and pressure in platinum tubes, hydrogen 300 
(667) 
