308 
INDEX, 
Bucknill measures resistance of iridioplatinum, 
51. 
Bulb for air thermometer, consecutive volumes 
of, 233. 
Bulbs, inglazed, data for, 206. 
of fire-clay, 20, 54, 237. 
porcelain, for air thermometer, 171. 
re-entrant form used, 209. 
unglazed, moisture in, 198. 
volumetry of, for air thermometer, 213. 
Bulier, circulating water pyrometer, 43. 
Burners for muffle furnace, 182. 
Bussius, expansion pyrometer of, 27. 
Bystrom, hydro-pyrometer of, 27. 
calorimetric pyrometer of, 41. 
C. 
Cadmium, boiling-point data for, 118. 
Cailletet, compresses gases, 33. 
Calibration, practical method of, data for, 110. 
Callendar, resistance, pyrometry of, 52. 
Calorimetric temperature measurement, 40. 
Capillary, platinum tubing, helix of, 244. 
apparatus for transpiration work, 245. 
Capillary tubes, metallic, 169. 
dimensions of, 171. 
of platinum, 248. 
radius of, 257. 
form of helix of, 258, 267. 
radius of, obtained by transpiration, 282. 
of platinum, construction of, 303. 
Carnelley, fusion pyrometer of, 39, 40, 42. 
Carnelley and Williams, calorimetric pyrome- 
try of, 41. 
Carnelley, circulating water pyrometer, 43. 
interpolation pyrometry of, 52. 
boiling point tables of, 57. 
Cagniard-Latour, acoustic pyrometry of, 47. 
Cauchy, on transpiration in short tubes, 285. 
Cells, standard, compared, 99. 
Chappuis on condensation of gases by solids, 301. 
Chatard, suggested ring burner, 85. 
Chautard, acoustic pyrometer of, 47. 
Circulating water pyrometer. 43. 
Clarke, F. W., transmits research, 4. 
suggests work on arsenic volatilizing point, 
121. 
Clausius, R., thermodynamics of, 22. 
introduces kinetic mean free path, 240. 
on the Wirkungssphare, 274. 
Clement, expansion pyrometer of, 26. 
Clement and Desormes, calorimetric pyrome- 
ter of, 40. 
Clock-work for annealing, 88. 
Codazza, air thermometer of, 33. 
Cold ends of capillary, correction for, 252. 
differential correction for, 254. 
Colson, silicification of platinum, 187. 
Comparison of large and small forms of vapor 
bath, 115. 
of gas expansions, 238. 
Compensator, 34, 192. 
for constant pressure air thermometer, 215. 
restricted use of, 216. 
Condensation, plane of, 108. 
of gases on solids, 301. 
Conductivity, electrical, pyrometers based on, 50 
thermal, pyrometers based on, 42. 
Conechy determines volatilizing point of arse- 
nic, 40. 
Constancy of temperature in boiling tubes, 104. 
Constants, electrical, of platinum alloys, 151. 
thermal, of argand lamp, 250. 
Constant pressure air thermometer described , 208 
formula? for, 210. 
accuracy of, 231. 
advantages of, 237. 
(See air thermometer, 216.) 
Constant volume air thermometer, 167. ' 
formulae for, 188, 195. 
experimental data for, 198. 
Contents, table of, 5, 6, 78. 
Cooling, rates of, in muffle furnace, 203, 204. 
effect of transpiring gas, 296. 
Corrections, thermo-electric, 99, 103. 
Corrosion of thermo-couples, 71. 
Coulomb, calorimetric pyrometer of, 40. 
Crafts studies dissociation of iodine, 30. 
air thermometer of, 32. 
vapor tension studied by, 38. 
low-pressure boiling points of, 121. 
and Meier displacement air thermometer 
37, 165. 
Crova, radiation researches of, 44. 
on solar temperature, 45. 
Crucible, large form for zinc, 73. 
small form of, for vapor bath, 90. 
Daniel], pyrometric work of, 2(3. 
Daniell cell, separate celled form of, 99. 
standard forms of, 99. 
Data for viscosity of gases, 258. 
Davy, air thermometer of, 28. 
Dead space, correction for, 257. 
Debray studies dissociation of marble, 38. 
(See Deville.) 
Decharme, radiation measurements of, 44. 
Density of platinum alloys, 128, 143, 145. 
Desbordes, expansion pyrometer of, 26. 
Deville and Debray study properties of plati- 
num alloys, 49. 
Deville and Troost, metallic vapor baths of, 19, 
23, 24. 
vapor density bulbs of, 29. 
final pyrometric work of, 31, 33, 34, 35, 3G. 
condemn non-spherical bulbs, 48. 
vapor baths of, 56, 57. 
large apparatus of, 84. 
select spherical bulbs, 174. 
compensator devised by, 192. 
zinc, boiling point of, 235. 
De war and Gladstone, photometric pyrometry 
of, 45. 
Die for porcelain tubes and stems, 96. 
Differential transpirometer, 249. 
apparatus for transpiration work, 249. 
transpiration measurement, 293. 
Diffusion of gases through platinum, 275. 
Digest of electrics of platinum alloys, 143. 
of constant pressureair thermometer results, 
227. 
