[p. 214]

Insulated, 27, [28], [40], [43], [52], [55], [73], [115], [151], [180]. Insulating, [66], [69], [120], [140], [164]. Insulating material, [114]. Insulation, [40], [116]. Instruments, [49], [94], [112], [118], [120]. Instruments, measuring, [8]. Intensity, [55], [60], [104], [154]. Interior, magnetic, [23]. Internal resistance, [37]. Interruption, [102], [103]. Installation, [168]. Ionize, [186]. Iron, [19], [132], [133], [136], [142], [171]. Isolated, [186]. J Jar, [29], [31], [32]. Journal, [46]. Journal block, [16], [146]. Jump spark, [99]. K Key, [90], [91], [95]. Key, sending, [90]. Knob, [32]. Knob, terminal, [31]. L Laboratory, [9]. Lead, [31], [136]. Lead, precipitated, [83], [85]. Lead, red, [83], [84]. Lever switching, [67]. Light, [104]. Light method, [56]. Lighting, [9], [38]. Lighting circuit, [48]. Lighting system, [82]. Lightning, [6], [171], [172], [173]. Lightning rod, [173]. Lime, chloride of, [84]. Line of force, [146]. Line wire, [122]. Line, magnetic, [22], [23]. Liquid, [32]. Litharge, [83]. Loadstone, [17]. Locomotives, [165]. Low tension, [38], [98], [102], [179]. M Magnet bar, [20]. Magnet core, [16], [75], [93]. Magnet, electro, [59], [78]. Magnet, horseshoe, [22], [25], [175].

[p. 215]

Magnet lines, [22], [23]. Magnet, permanent, [25], [38], [46], [50], [172]. Magnet, reversed, [20]. Magnet, steel, [53]. Magnet, swinging, [53]. Magnetic, [7], [19], [20], [21], [22], [25], [113], [178]. Magnetic construction, [39]. Magnetic exterior, [27]. Magnetic field, [22], [24], [27], [38], [50], [112], [146], [148], [155]. Magnetic interior, [23]. Magnetic pull, [59]. Magnetic radiator, [37]. Magnetism, [19], [54], [104], [110], [159], [171]. Magnetized, [18], [25], [27], [50]. Magnetized wire, [146]. Magnets, [13], [14], [18], [19], [20], [21], [22], [23], [24], [25], [39], [51], [53], [54], [70], [71], [73], [75], [81], [90], [93], [112], [113], [115], [147], [150], [163], [176], [177], [178]. Main conductor, [31]. Mandrel, [15], [16]. Manganese, [19]. Manifestations, [19]. Mariner, [172]. Material, non-conducting, [90]. Maximum, [154]. Measure, [55], [56], [60], [62]. Measurement, [62]. Measuring devices, [27]. Measuring instruments, [8]. Mechanism, [47], [180]. Medical batteries, [99]. Mercury, [63], [169]. Metal base, [73]. Mica, [186]. Microphone, [118], [119], [120]. Millimeter, [63]. Minus, [34]. Minus sign, [21]. Morse code, [76]. Motor, [7], [21], [27], [46], [47], [62], [82], [99], [150], [176], [180]. Mouthpiece, [115]. Mouthpiece rays, [188]. Moving field, [117]. Multiple, [168]. Musical scale, [111]. N Negative, [21], [35], [36], [68], [83], [86], [87], [94], [125], [151], [152], [154], [165], [177], [178], [179]. Neutral, [125]. Neutral plate, [84]. Nickel, [136]. Nickel plating, [132]. Nitrate of silver, [62]. Nitrogen, [126].