72.

Conically formed, 126.

Conjunction, 143.

Connecting wire, 58.

Connection, 72, 76.

Construction, magnet, 39.

Consumption, 180.

Contact, 122, 123, 152, 162.

Contact finger, 150.

Contact plate, 67, 68, 79.

Contact screws, 93.

Contact surface, 66.

Continuous, 145.

Converter, 176.

Converting, 142, 145, 146.

Copper, 18, 34, 36, 65, 66, 132, 133, 134, 135, 136, 137, 142, 143.

Copper cyanide, 133.

Copper plate, 33, 35, 58, 67.

Copper sulphate, 57.

Copper voltameter, 55, 57.

Core, 27, 28, 36, 39, 40, 115.

Core, magnet, 75, 93.

Counter, clock-wise, 51.

Coupled, 36.

Crank, 30.

Crookes' tube, 184.

Cross bar, 52, 66.

Crown of cups, 32.

Crystal, 85.

Current, 6, 7, 13, 18, 26, 27, 28, 35, 36, 37, 38, 47, 50, 51, 52, 55,
56, 57, 58, 59, 62, 63, 70, 72, 73, 90, 95, 98, 105, 108, 116, 133, 134,
135, 136, 138, 139, 140, 141, 142, 143, 147, 148, 149, 150, 152, 153,
157, 160, 161, 163, 165, 166, 170.

Current, alternating, 150.

Current changing, 82.

Current conduction, 27.

Current, continuous, 164.

Current, direct, 145, 150.

Current direction, 50.

Current, exterior, 50, 150.

Current, reversing, 148.

Current strength, 7, 57.

Current testing, 143.

Cut-out, 120.

Cutter, 14.

Cutting, lines of force, 38.

Cylinder, 44.

Cylindrical, 43.

D

Dash, 95, 97.

Decoherer, 106, 108.

Decomposed, 57, 128.

Decomposes, 55.

Decomposing, 123.

Decomposition, 12, 35, 82.

Deflected, 54.

Degree, 135, 162.

Demagnetized, 24, 72.

Deposited, 58, 133.

Depression, 15, 140.

Detecting current, 49.

Detector, 49, 52, 54, 105.

Devices, measuring, 27.

Diagrams, 46, 48, 79, 89.

Diagrammatically, 81.

Diamagnetic, 19.

Diametrically, 114.

Diaphragm, 112, 113, 116, 120, 122.

Diamonds, 186.

Diluted, 86.

Direct current, 38, 140.

Direction of current, 50.

Direction of flow, 98.

Discharge, 172.

Disintegrate, 132.

Disk, 43.

Dissimilar, 37.

Disturbance, 176.

Dividers, 14.

Divisibility, 168.

Dot, 96, 97.

Dot and dash, 96.

Double click, 95.

Double line, 65.

Double-pole switch, 65.

Double-throw switch, 117.

Drawing, 20.

Drill, ratchet, 13.

Drops, 81.

Ductile, 186.

Duplex wire, 115.

Dynamo, 7, 27, 38, 42, 46, 48, 62, 82, 83, 87, 89, 132, 141, 142, 145,
150, 155, 161, 165, 167, 175, 176, 180, 187.

Dynamo fields, 40, 41.

E

Earth, 22.

El