CONTENTS. XI 



214. Densities, melting-points, boiling-points of organic compounds: 



(a) Paraffin series .215 



() Olefine series 215 



(f) Acetylene series 216 



(d) Monatomic alcohols 216 



(e) Alcoholic ethers 216 



(/) Ethyl ethers . . . . . . . . .216 



215. Lowering of freezing-points by salts in solution 217 



216. Raising of boiling-points by salts in solution 219 



217. Freezing mixtures .......... 220 



218. Critical temperatures, pressure, volumes and densities of gases . .221 



219. Coefficients of linear expansion of the chemical elements . . .222 



220. " " " " " miscellaneous substances . . 223 



221. " " cubical " " crystalline and other solids . . 224 



222. " " " " " liquids 225 



223. " " thermal expansion of gases 226 



224. Mechanical equivalent of heat: various data ..... 227 



225. " " " " adopted values (Ames) . . . 227 



226. " " " " conversion values . . . .227 



227. Specific heats of the chemical elements 228 



228. " " " water and mercury 229 



229. " " " various solids 230 



230. " " " " liquids 230 



231. " " " " minerals and rocks 231 



232. " " " " gases and vapors ...... 232 



233. Gas and mercury thermometers : formulae 233 



234. Comparison of hydrogen and i6 m thermometers : o to 100 C. . . 233 



235. " " " " 59 IU " otoiooC. . .233 



236. " " " " 16'" and 59 thermometers: -5 to -35 C. 233 



237. Comparison of air and i6 m glass thermometers : o to 300 C. . . 234 



238. " " " " 59 m " " 100 to 200 C. . 234 



239. " " hydrogen and various mercury thermometers . . 235 



240. " " air and high temperature (59 m ) mercury thermometer . 235 



241. " " H., toluol, alcohol, petrol ether, pentane thermome- 

 ters 235 



242. Stem correction for thermometers 236 



243- " " " 2 37 



244. " " 237 



245. Radiation formulae and constants for perfect radiator . . . .238 



246. " in calories for perfect radiators at various temperatures . 238 



247. " distribution in spectrum at various temperatures . . . 238 



248. Cooling by radiation and convection ; ordinary pressures . . . 239 



249. " " " " " different pressures . . . 239 



250. " " " " " very small pressures . . . 240 



251. Cooling by radiation and convection : temperature and pressure effects 240 



252. Properties and constants of saturated steam : metric measure . 241 



253. " " " " " " common measure . . 242 



254. Ratio of the electrostatic to the electromagnetic unit of electricity . 247 



