XIV CONTENTS. 



339. Equivalent conductivity of salts, acids, bases in solution . . . 305 



340. " some additional salts in solution . . 307 



341. conductance of the separate ions ..... 308 



342. Hydrolisis of ammonium acetate : ionization of water . . . 308 



343. Dielectric constants (specific inductive capacity) of gases . . . 309 

 344- " " " " " " " temperature 



coefficient ........... 309 



345. Dielectric constants (specific inductive capacity) of gases : pressure co- 



efficient 310 



346. Dielectric constants of liquids . . . . . . . .310 



347. " " " temperature coefficient . . . .312 



348. " " " liquefied gases 312 



349. " " " standard solutions for calibrations . . .313 



350. " " solids 313 



351- " crystals 314 



352. Permeability of iron rings and wire, various inductions . . .315 



353. Permeability of transformer iron : 



(a) specimen of Westinghouse No. 8 transformer . . . 315 



(b) " " " " 6 ... 316 



(c) " " " " 4 ... 316 



(d) " Thomson-Houston i5oo-watt transformer . . 316 



354. Magnetic properties of iron and steel . . . . . . -317 



355- " " cast iron in intense fields . . . -317 



356. corrections for ring specimens 317 



357. Composition and magnetic properties of iron and steel . . -318 



358. Permeability of some of the specimens in Table 303 .... 320 



359. Magnetic properties of soft iron at o and 100 C 320 



360. " " " steel at o and 100 C 320 



361. " " cobalt at 100 C 321 



362. " nickel " " " 321 



363. " " " magnetite 321 



364. " " Lowmoor wrought iron 321 



365. " " " Vicker's tool steel 321 



366. " " " Hadfield's manganese steel . . . .321 



367. Saturation values for different steels 321 



368. Magnetic properties of iron in very weak fields . . . . .322 



369. Dissipation of energy in cyclic magnetization of magnetic substances . 322 

 37- " " " " " " " cable transformers . 322 



371. Demagnetizing factors for rods 323 



37 2 ' " Shuddemagen's values ..... 323 



373. Dissipation of energy in cyclic magnetization of various substances . 324 



374- " " " " " " " transformer steels . 325 



375. Magneto-optic rotation, formulae : Verdet's constant . . . .326 



376- " " " in solids 327 



377- " " " " liquids 328 



3/8 " " solutions of salts and acids in water . . 329 



