INDEX 



organic liquids, 42, 68, 233, 



orientated molecule, 226 



orientation, 225, 226, 262, 263, 274, 



277, 325 

 orientation and segregation of the 



molecules, 86, 238 

 orientation of molecules, 40, 41, 42, 



72, 73, 84, 87, 89, 94, 258, 259, 261 

 orientation of organic molecules, 88 

 orientation of the polar molecules, 



262 

 orienting effect, 94 

 orienting force, 91 

 origin, 371 

 origin of species, 6 

 ortho position, 69 



Orthorhombic Bipyramidal, 249, 251 

 orthorhorabic mixed crystals, 253 

 osmotic pressure, 44 

 OSRD, 23 

 oxidation, 301 



oxides, 121, 123, 131, 142, 143 

 oxide of tungsten, 105 

 oxidizing flames, 136 

 oxy-acetylene flame, 122, 126, 141 

 oxyacetylene welding, 136 

 oxygen, 34, 36, 37, 62-64, 103, 105, 



113, 121, 122, 132, 134, 135, 136, 



141, 150, 201, 235, 236, 244, 255, 



256, 266, 300, 301, 302, 396 

 oxygen atoms, 37, 39, 235, 397 

 oxygen ions, 246 

 oxygen film, 62 

 oxygen films on tungsten, 35 

 oxygen molecules, 235 

 oxyhydrogen, 137 

 oxy-hydrogen flame, 122 

 ozone, 127 

 ozone molecules, 300 



p, 44, 45, 50 



pairs of electrons, 241, 242, 255, 256, 



400 

 palladium, 150 

 Palmer, Robert, 121, 126 

 palmitic acid, 94, 95, 98, 267, 268, 



273, 274, 275, 276, 277, 278, 279 

 palmitic acid molecule, 276, 279, 280 

 para nitrophenol, 69 

 para position, 69 

 paraffin, 68, 69, 70, 267, 317 

 patent system, 16 

 Pauli principle, 221 

 PCI5, SFg, 393 

 Pease, 399 

 PbS, 399 



pentane, 226, 237 

 pentanol, 83 



perchlorates, 246, 249, 257 

 periodic table of the elements, 221 

 periods of oscillations, 317, 318 

 Perkin Medal, 100, 110 

 Perkin, William Sir, 100 

 Permanganates, 249, 257 

 PH3, 113 

 phase, 272 

 phase boundary, 59 

 phase postulate applies, 384 

 phase rule, 360 

 phenol, 69 

 Phil. Mag., 116, 124, 133, 163. 198, 



295, 308 

 Phil. Trans., 163, 305 

 phosphites, 250 

 phosphates, 257 

 phosphorus, 113, 124, 150, 151, 394. 



396 

 phosphorus pentoxide, 116, 133 

 photocurrents, 362, 363 

 photoelectric current, 362 

 photoelectric effect, 286 

 photoelectric emission, 362 

 Physical Institute in Leningrad, 20 

 Phys. Rev., 112. 126. 130. 144. 146, 



147. 151. 205, 296, 353 

 Physic. Rev. I.e., 158 

 Phys. Zeit, 260 

 Phys. Zeitsch, 296 

 Phys. Ztsch., 317 

 Phys. Ztschr., 309 

 Physik. Z., 151, 158 

 Piecework rates. 28 

 Pier, 194 



429 



