NOTE.—It must be distinctly understood that no responsibility for the statements or views indicated by this index or set forth in the appendices is assumed either by the delegates collectively or by the Editor.

seful, 54

„ objectionable, 9, 61, 62, 88, 123

„ Early use of, as conductors, 122

„ Old iron, for earth terminals, 74, 204

Chapel, Rycroft, struck, 45, 46

Chapman, Gen. Sir F. E., his Report, 72

Charcoal for earth terminals, 12, 16, 58, 125, 126

Charles, M., his Report on Instructions for erecting conductors, 57

Cheapness of galvanized iron, 132

Chimney, Accidents to, soon after erection, 194

„ Granite, in Plymouth Dockyard, struck, 73

„ Metal Caps to be joined to Conductors, 125

„ New, contain much moisture, 194

„ not struck that had conductors, 193

„ of Edinburgh Gas-works, 89

„ over, 90 feet have conductors, 193

„ rod to be on, 100

„ rope on, liable to corrosion, 125

„ Shafts, copper band round top of, 9

„ Stacks are Conductors, 7

„ struck, 27, 28, 40, 45, 193, 194

„ struck because of heated air, 113

„ struck before completion, 94

„ struck that had no conductors, 38, 193

„ very rarely struck at Glasgow, 193

„ with soot dangerous conductors, 106

„ Zinc, struck, 37

Church, Brixton, struck, 84

„ Charles, at Plymouth, 86

„ Christ, Carmarthen, 217

„ Rosenberg, in Carinthia, destroyed, 1730, 123

„ St. Bride, Fleet Street, damaged, 126

„ Ste. Croix, Ixelles, struck by lightning, 140

„ St. George, Leicester, damage to 126, 240

„ St. Giles, Cripplegate’s truck, 196

„ St. Mary, Genoa, 126

„ Southampton, damage to, 126

„ Steeple at Bodmin, destruction of, 202

„ struck, 29, 125, 126, 129, 131, 192, 194, 202, 214, 223, 225, 243

„ spirally coiled up, 128

„ struck by lightning, 128

„ supposed perfect, proved defective, 131

„ theory and action of, 106

„ to be close to wall of building, 11, 15, 86

„ to be continuous, 179

„ to be fixed by iron staples, 125

„ to be, 4 inches from walls and roofs, 118

„ to be inside, 126, 225

„ to be on side most exposed to weather, 60

„ to be of metal of high conductivity, 131

„ to be symmetrically arranged, 105

„ to earth by shortest route, 126

„ to gas and water mains (See Earth Terminals).

„ to Middlesboro’ Hospital, 204

„ to rest in hooks, 179

„ to St. Alphege Church, Greenwich, 206

„ to St. Michael’s Church, Blackheath, 205

Cone of platinum (See Platinum).

Conic Terminals (See Points).

Conference Circulars by the Lightning Rod, 3, 175

Conic Space, protected (See Protection, Area of).

Connection (See Earth Terminals, and also Joints).

„ of metallic masses, 9, 10, 76, 77, 186

„ „ not necessary, 126

Contact between iron and copper to be avoided, 111

Continuity between point and earth contact, 129

Contraction to be provided for, 70, 125, 128

Copper and iron form best conductors, 119

„ and iron soldered, 107

„ and zinc wire bad for conductors, 205

„ Australian, 124

„ better than silver, 139

„ conducting power of, 19, 124, 131, 139

„ conductors, 18, 70, 190, 195, 196, 199.

Field, Rogers, C.E., on accident at Caterham, 210

„ on ventilating pipes, 216

Fire of inflammable materials, 127

First conductor erected in England, 85, 121

First conductor fixed in Europe at Hamburg, 122, 129

Fixing conductors to ships, 87

Fizeau, M., his report on powder magazines, 66, 67

Flagstaff should have a conductor, 70

„ struck, 44, 187, 196

Flashing, Lead, how to connect wire rope with, 10, 11, 34

Flash, lightning, effects of, 84

Flow of electricity through conductors, 133

Flues copper, 183, 185

„ lightning passed down, 38, 39

„ warm, and an iron grate, a dangerous conductor, 101

Forest Hill, chimney of house struck, 38

Forms of upper terminals (See Point).

Formula for determining area protected (See Protection, Area of).

Foster, Prof. G. Carey, on Personal safety, 233

Fountains, Public, conductor lead away from, 56

Franklin, Dr., and wet rat, 85

„ discovered pointed metal best conductor, 121

„ erected lightning rod to his house, 121

„ experiments, 79, 84

„ „ repeated by Buffon & Dalibar, 115

„ first conductor was melted, 116

„ his report to French Academy, 51

„ on cold fusion, 102

„ on connection of lightning rod, 54

„ report on Purfleet, 76, 126

„ round rod best, 114

„ success in pushing use of conductors, 121

„ tried his kite successfully, 121

Freeman & Collier, their answer, 10, 17

French instructions, 51

„ „ on area protected, 22

Fresnel, M., his instructions, 59

Frost, A. J., Abstracts by, 99, 118

Fusion, metals which resist, only to be used, 139

„ of defective conductor, 215

„ of rod, Wheatstone on files@58367@58367-h@58367-h-9.htm.html#Page_1030" class="pginternal">30

Horizontal conductor, 71

„ conductors for steeples, 125

Horsley, Bishop, his Report, 79

Hotel des Invalides, Paris, conductor on, 86

Hotel de Ville, Brussels, conductors of, 126

House at Bethnal Green cut in two by lightning, 41

„ at Bournemouth with, 7 conductors, 199

„ at Cannes (France) struck, 198

„ near trees struck, 127

„ of Parliament protected by Harris’s conductors, 122

„ with two separate conductors, 128

Hugueny, M. F., on “Le coup de foudre de l’ile du Rhin”, 99

Ignition depends on retardation of discharge, 127

Infirmary, how to be protected, 10

Ingenhousz’s, Dr., experiments, 122

Ingram, Mr., of Belvoir Castle, on trees struck, 47

Inspection of conductors, 9, 72, 102, 111, 124, 127, 130, 131, 132, 179, 244

Instructions, 63, 99, 176, 181, 240

„ British Army Circular, 70

„ French Official, 59

„ for formation of good earth, 64, 72, 132

Instrument hut at Valencia, how protected, 105

Insulation, shock decreased by, 118

Insulators, 34, 37, 76, 99, 184, 186, 194

„ approved, 13, 118

„ objected to, 8, 11, 13, 14, 16, 21, 24, 68, 69, 73, 86, 89, 103, 57

Monument, London, its immunity from injury by lightning, 103

Morea, Signor Lerigi, 180

MÜller’s, Prof., conditions for lightning conductors, 129

MÜller’s, Dr. Hugo, experiments, 135

Municipal buildings in Paris, lightning rods for, 67, 225

Munson, D., & Co., their rods, 216

Murgatroyd, J., his report, 39

Murray, J., on Atmospheric Electricity, 82

Musgrave, Dr., his report, 79

Myers, Gen., 181

Nails, copper, used in attaching conductor to building, 14

%center%(See also Attachment).

Nairne, E., his report, 79

Nash lights, 183, 187

National Institute (of France) report made to, 53

Nelson column, 90

Newton, Sir I., machine of glass, 120

“New York,” packet boat, struck, 61, 62

Nickson, Mr., his report, 78

Nottingham, Castle, how protected, 23, 24

Nuts, copper, 192

%center%(See Joints).

Number of persons killed by one discharge, 129

Objects on plains attract lightning, 127

Odour, sulphurous, of lightning, 85

Official instructions:

„ Denmark, 176

„ England, 70–74

„ France, 51–69

„ India, 181

„ Italy, 179

„ Norway, 106, 176

„ United States, 181

Ohm, his laws, 18, 133

„ on conducting power of metals, 124

Oldham, Explosion at, 239

Oliver, T., his report, 39

Oxidation, how to be avoided, 83

„ of copper less than that of iron, 131

„ of cylinder, 140

„ „ earth terminals, 131

„ „ surface of conductor unimportant, 73

„ „ terminals leads to failures of conductors, 131

Painted conductor, 69, 94, 99, 103, 113, 117

„ galvanized conductor, 139

Paint objected to, 60, 66

„ sharp, 129, 130, 132, 138, 139

„ „ not too, 92, 123, 129, 242

„ „ experiments with, 51, 80

„ should be kept clean, 130, 132

„ „ of good conducting metal, 139

„ should it be painted? (See Painted).

„ space protected by (See Protection, Area of).

„ square tapering, 23

„ used in Germany, fire gilded copper cone or sphere, 105, 111, 130

„ useful, 102, 122

„ useless, 77, 103, 113

„ vertical, horizontal, or perpendicular, 58

Poisson, M., his joint instructions, 59

Polarity of ship’s compass reversed by lightning, 121

Poles, Telegraphic, how protected, 101

Pouillet, M., his joint Report, 60, 66

„ on Conducting Powers of Metals, 124

„ „ Discharge of Lightning, 131

Powder magazines, 51, 52, 55, 56, 57, 66, 67, 70, 73, 74, 76, 81, 87, 109, 118, 123, 126, 130, 177, 178, 216

Preece’s, Mr. W. H., Abstract of Replies of Manufacturers, 22

„ Discussion on Lightning Conductors, 131

„ Discussion on Earth Connection, 131

„ Abstracts by, 98, 102, 117, 130, 132, 241, 243

„ on Conductors, 10 miles, 108

Sullivan, Adml 8367@58367-h@58367-h-14.htm.html#Page_1110" class="pginternal">110

Wind, action of on conductors, 116, 127

Windmill with conductor struck, 128

Windows, copper, to magazines, 74

Winkler, Prof. J. H. (1746), electricity cause of thunderstorm, 129

Wire cables (See Rope).

„ cage as protection without use of earth, 132

„ melted into drops like shot, 195

„ of zinc melted, 107

„ rusted in earth and was useless, 107

„ square, 13, 216

Withers, J. B. M., his report, 40

Wood to be creosoted to form case for iron, 125

„ coated with resin, as a conductor, 54

Workhouse, how to be protected, 10

Wrexham Church struck, 126

Wrottesley, Col. G., R.E., his report, 40

Wrought iron (See Iron).

Wyatt Papworth Church struck, 39

York, accident at, 219

Zenger’s, Prof. C., Symmetrische Blitzableiter, 104

Zinc better conductor than iron, 74

„ coating, 72

„ chimney of house struck, 37

„ cylinder, wire to pass through, 83

„ strips, 192

„ wire melted, 107