J. B. JOULE. On a Remarkable Flash of Lightning. Nature, xviii. 260. 1879.    S. A. R. On the Cause of Thunder. Nature, xx. 29. R. S. NEWALL. On the Importance of a Sufficient Earth Contact for Lightning Conductors. Times, May 30 and June 14. Curious Effects of Lightning. Electrician, vol. iii. 181. AYRTON and PERRY. On the Earth Connection of Lightning Conductors. Nature, xix. 475. G. W. CAMPHUIS. On the Effects of Lightning. Nature, xx. 96. R. S. NEWALL. On Lightning Conductors. Nature, xx. 145. CHARLES S. TOMES. On Lightning Conductors. Nature, xx. 145. INDEX. A PAGE Accidents and fatalities from lightning 169–197 Admont, Styria, convent struck by lightning 67 Air-pump, the inventor of the 2 Alatri, the Cathedral of, struck by lightning 203 ———— Father Secchi’s account thereof 203 Allamand (John Nicholas), his researches on electricity 4 Amber or ‘Electron’ and its properties 1 America, lightning protection in 133 ———— the tramping ‘Lightning-rodmen’ of 133 ———— account of the details of the American system 134 ———— utilisation of gutters and rain-pipes in 134 ———— the protection of chimneys and air-shafts in 136 ———— the method of constructing the earth-terminal in 136 ———— the protection of mineral oil tanks 138 Antrasme, France, church twice struck by lightning at the same point 65 ———— Arago’s remarks thereof 66 Arago on the observation of thunderstorms 62 ———— on the efficiency of lightning-conductors 73 ———— on whether lightning-conductors should be carried down inside or outside a building 159 Area of protection theory 77, 101, 126, 145 Auffangstange, the German 145 Austria, statistics of fires caused by lightning in 174 B Baden, statistics of deaths from lightning in 173 ‘Balls _v._ points,’ the controversy of 40 Banker’s iron safe struck by lightning 221 Bavaria, statistics of fires caused by lightning in 173 Becquerel (Antoine C.), his experiments on the conductivity of metals 51