Henly’s system for protecting ships from lightning 90 ‘Heretical-rods’ 44 Highbury Barn, electrical experiments made at 8 Holtz (Dr. W.), on the construction and maintenance of lightning-conductors 223 Humboldt (Alex. von) on the height of lightning-clouds 67 I India, the use of lightning-conductors in 92 Ingenhousz (Dr. Johan) and lightning-conductors 47 Inspection of lightning-conductors 218–229 ‘Instruction’ of the Paris Academy on lightning-conductors 75 Insulators, the dangers of 147, 160, 176 Iron and Copper, the relative electrical conductivity of 52, 143 ———— safe, a banker’s, struck by lightning 221 Italy, the progress of lightning-conductors in 44 J Jarriant’s system of lightning-protection 133 Josephus’ account of Solomon’s Temple 63 K Kant (Immanuel) on Benjamin Franklin 24 Kastner (Professor), his report on the partial destruction of Rosstall Church by lightning 106 Kew, lightning-conductor erected by George III. at 41 Kinnersley (Ebenezer), his lectures on lightning-conductors 27 Kite, Benjamin Franklin’s experiment with 22 Kleist (Ewald George von) and the discovery of the Leyden Jar 5 L Landriani (Professor), his theories of earth protection 201 Laughton-en-le-Morthen, church damaged by lightning 153, 176 ———— R. S. Newall’s comments thereon 153, 154 Lead, the use of, for lightning-conductors 104 Leicester, St. George’s Church struck by lightning 177 Lenz (Professor) his experiments on the conductivity of metals 52 Leopold, Duke of Tuscany, and lightning-conductors 44 Le Roy (David) and the protection of the Louvre from lightning 80 ———— (J. B.), his theory of protecting buildings from lightning 101 Leyden Jar, the first discovery of the 5 Lightning, superstitions in regard to 63 Lightning-clouds, the height of 67