Coins, to take impressions of 44 Compositions for Fire-works, method of mixing 168 Concerto, solar 62 Cork heavier than Lead 81 Correspondence, secret 18, 25 by music 20 Coruscations, artificial 136 Cotton electrified 92 Crackers, to make 169 Cylinder, illuminated 91 Dance, magic 86 Dancer, hydraulic 49 Detonating works 190 Girdle 190 Balls 191 Tape 191 Cards 191 Dial, magnetic 71 Dodecahedron in Fire-works 187 Duplicates, ten 102 Earthquake, artificial 22, 86, 187 Eclipse of the Sun, to observe 129 Egg, to form Figures on, in Relief 35 Eggs, white of, contains an Alkali 144 Electric effects of a Russian climate 30 Electricity, experiments in 83 Resin lighted by 95 Spirits ignited by 95 Eolian Harp, to make 137 Exhalations, subaqueous 137 Explosion, brilliant, under Water 54 Explosion, magical 86 electric 98