Bevis (Dr.), experiments in electricity 7 Bibliography of works bearing upon lightning-conductors 231 Black Rock, Cork, St. Michael’s Church struck by lightning 184 Brass wire, the use of, for lightning-conductors 105, 107 Brescia, Italy, powder-magazine destroyed by lightning 200 Brussels, the Hôtel de Ville. The system of lightning-conductors at 111 Buffon (Count de), his opinion of Franklin’s first pamphlet on electricity 19 Buffon (Count de), his promotion of experiments in electricity 20 Buttor (Eustace) account of the striking of Christ Church, Clevedon, by lightning 208 C Carthusian monks at Paris, electrical experiments made on 6 Cavendish (Lord Charles), experiments in electricity 7 Chains, iron, the use of, for lightning-conductors 102 Chimney-shafts, the protection of, from lightning 163 Chimneys and air-shafts, the protection of, from lightning in America 136 Churches struck by lightning 27, 38, 64, 65, 146, 147, 153, 176, 177, 181, 182, 183, 184, _see also_ 186–196, 201, 203, 208 Churches, the protection of, from lightning 152, 156 Coiffier first draws lightning from the atmosphere 21 Cleopatra’s Needle, the protection of, from lightning 141 Clevedon, Christ Church struck by lightning 208 ———— Eustace Buttor’s account thereof 208 Cockburn (Sir George) and Sir William Snow Harris 89 Collinson (Peter) Correspondence with Benjamin Franklin 12, 13, 17 Compass reversed by a lightning-stroke 56 Compensator for contraction and expansion in lightning-conductors 128 Copper, the relative value of different kinds of 109 ———— the necessity for its purity when used for lightning-conductors 109 ———— and iron, the relative electrical conductivity of 52, 143 ———— rope-conductors, the proper thickness and weight for different buildings 151 ———— description of 62, 164 Cromer, Norfolk, church damaged by lightning 147 Cuneus, his experiments in electricity 4 Cyprus, the copper of 52 D Dalibard (M.), his experiments in electricity 20 Davy (Sir Humphrey), his experiments on the conductivity of metals 50