INDEX 



731 



depending on amperage 496 small arc lamp 82, 84 



for large currents 513 Wistar Institute 320, 374 



for automatic lamp 512 Woodward, use of lime light for 



for moving pictures 399 projection (1824) 686 



for multiple lanterns 34, 297 Wright, Lewis 



for a distant supply 513 9, 105, 207, 243, 245, 256, 282 



inductor and transformer. . . 532 



mazda lamp 90 Zahn, early projection apparatus 679 



municipal regulations for .... 499 Zeiss, 176, 181, 187, 221, 225, 231, 



Nernst lamp alternating cur- 232, 250, 272, 281, 382, 385, 386 



rent 93 Zeitschrift fur Instr 221 



Nernst lamp, direct current. . 94 Zeitschrift fur wissenschaftliche 



on three- wire supply 514 Mikroskopie 221 



regulations for 498-501 Zirconium discs. .' 100 



rheostat 504 Zoetrope and magic disc .... 680-682 



