310 
INDEX. 
Heat expansion of porcelain, 236. 
Heating, rates of, in muffle furnace, 203,204. 
method of, for transpiration work, 249. 
Heeren, fusion pyrometer of, 39. 
Helmholtz on Gleitung's coefficient, 252, 276, 302. 
Helix of platinum capillary tubing, 244, 305. 
of capillary tube, how wound, 248. 
of capillary tube, early form of, 258. 
later form of, 267. 
High temperature' measurement, difficulties 
of, 24. 
data, accuracy of, 54. 
Historical account of methods of pyrometry, 24. 
Hoadley, calorimetric pyrometer of, 42. 
Hobson, calorimetric pyrometer of, 41. 
Hoffmann, on efflux through short tubes, 242. 
Hoffmann's formuke for wide transpiration 
tubes, 285. 
Holden, Dr. Austin, aids research, 19. 
Holman, Silas W., on viscosity of gases, 240,241, 
242. 
formula of, for viscosity and temperature, 
279, 280. 
Holman, transpiration, method of, 302. 
Hydrogen permeates platinum, 264, 275, 283. 
I. 
Illustrations, table of, 9, 10. 
In-glazed porcelain bulbs, 174. 
Insulators, machine for making, 95. 
Interpolation methods of pyrometry, 52,54. 
Iodine vapor, pyrometric use of, 24, 29. 
Isambert, studies dissociation of solids, 38. 
J. 
Jenkin, F., table of specific resistance of, 157 
Jet pumps of Professor Richards, 242. 
Jolly, air thermometer of, 32. 
form of air thermometer of, 167. 
Jourdes, heat conduction pyrometry of, 42. 
K. 
Kayser on condensation of gases by solids, 301. 
on disintegration of platinum, 276. 
Kinetic inferences for viscosity of gases, 273. 
King, Clarence, suggests researches, 17. 
instructions of, 17. 
Kittler measures temperature coefficientof Lati- 
mer Clark's cell, 102. 
Knott, MacGregor, and Smith, thermo-electrics 
of cobalt of, 49. 
thermo-eiectrics of platinum alloys of, 49. 
Kovesligethy, radiation work of, 46. 
Kohlrausch and Ammann, zero method of, 97. 
Kundt, capillary glass connectors of, 171. 
Kundt and Warburg, apparatus of, for viscos- 
ity, 241. 
L. 
Lamy, dissociation pyrometer of, 38. 
Landolt and Boernstein's tables, 40, 42. 
use of, 213. 
linger. (See Meyer.) 
Langley, bolometric work of, 44, 46. 
Latimer Clark's standard cell, 97, 99, 182. 
Lauth, pyrometric work of, 23. 
studies fusion of silicious mixtures, 40. 
circulating water pyrometer, 43. 
Law of fifth powers of Maxwell, 277. 
Le Chatelier, high temperature work of, 22. 
fusion experiments of, 40, 50. 
thermo-electric work of, 49. 
platinum-rhodium couple of, 50. 
pyrometric work of, 84. 
Limit of thermo-electric thermoscopes, 53. 
Limit thermo-couples, 81, 83. 
Lion and Guichard, expansion pyrometer of, 27. 
Liquids, dilitation of, 27. 
List of thermo-couples, 68. 
M. 
MacGregor. {See Knott.) 
MacGregor and Knott, resistance of iridioplati- 
num,51. 
Machine for making insulators, 95. 
Machine for soldering porcelain, 175. 
Magnus, measures expansion of gases, 33. 
Magnetism, pyrometers based on, 52. 
Main, heat conduction pyrometry of, 42. 
Malvern Platinum Works, apparatus of, 21. 
Manipulation of revolving muffle, 185. 
Manometer for air thermometry, 167, 188. 
Matthiessen, resistance measurements of, 26. 
Matthiessen and Vogt, electrics of alloys of, 157. 
Mariotte flask, how improved, 244. 
Maxwell, viscosity of gases studied by, 46. 
law of gaseous viscosity, 240, 241, 252. 
Maxwell on viscosity and temperature, 277. 
on mean free path, 274. 
Mayer, A., acoustic pyrometer of, 47. 
Mean free path introduced by Clausius, 240. 
relations of, to temperature, 274. 
Mercury, vapor bath of, data for large, 69. 
constant temperature of, 105. 
small form of vapor bath for, 84. 
Metallic boiling points, 29, 30.. 
Metals, specific heat of, by Violle, 41. 
all dissolved by platinum, 127. 
Methods for viscosity measurement, 247. 
Meyer, O. E., transpiration formula of, 47. 
on viscosity and transpiration of gases, 240, 
241. 
derives transpiration formula of gases, 251. 
on the sliding coefficient, 276. 
on viscosity and temperature, 277. 
temperature coefficientof viscosity of, 279. 
Meyer, Victor, pyrochemic work of, 25, 34. 
dissociation of iodine, etc., 30. 
vapor density method of, 36, 37. 
Meyer, calorimetric work of, 42. 
Meyer, Victor, suggests boiling-point substan- 
ces, 121. 
pyrochemical researches of, 37. 
on expansion of gases, 248. 
Mill, air thermometer of, 28. 
Miller, calorimetric pyrometer of, 41. 
Moisture in unglazed bulbs, 198. 
Morlent Freres, porcelain work of, 21. 
McSweeney, radiation pyrometer of, 43. 
