Tisley & Spüler, 382, 737
Transit of Venus 1874, 351
Trevelyan, Arthur, 478
Trouvé, Gustave, 798
Turrell, Edmund, 587
Twyman, Frank, 368
Tyndall, John, 427, 431, 440
United Electric Light Co., 796
Varley, Cornelius, 620
Varley, Cromwell F., 535
Ven, Elisa van der, 16-19
Verpoorten, see Gebr. Verpoorten
Vidie, Lucien, 462, 463
Volta, Alessandro, 226, 661
Vuillaume, 105
Wagner, Johann Philipp, 698, 702-704
Walferdin, François H., 413
Watkins & Hiü, 655, 690, 691, 707, 731, 744, 778
Watson, Henry, 674
Waveren, Jilles van, ||f , 340, 421, 451, 602, 723
Weber, Wilhelm Eduard, 646
Wedermann, 789
Wedgwood, Josiah, 419
Weinert, K., 793
Weinhold, Adolf Ferdinand, 434, 438
Wenckebach, Eduard, 15, 340, 364, 616, 624
Wetteren, see Gebr. van Wetteren
Wheatstone, Charles, 521, 534, 610, 624, 771, 778, 779
Whewell, William, 650
Wiedemann, Gustav Heinrich, 765
Wild, H„ 578
Wilde, Henry, 693, 694
Willigen, Volkert S.M. van der, 14-17,105, 319, 353, 543, 557, 588,
600, 601, 607, 612, 631, 717
Wilson, George, 341, 373
Wimshurst, James, 688
Winter, Georg K., 672
Wollaston, William Hyde, 619
Wright, Alexander, & Co., 373
Wright, Lewis, 635
Zamboni, Giuseppe, 662, 663, 736