Salt, exploding 127 Saltpetre for Fire-works 164 Saltpetre, to pulverize for Fire-works 164 Sealing-wax spun into Threads by Electricity 100 Sea-fight, &c. in Aquatic Fire-works 196 Serpents, for Fire-works, to make 169 Shillings, a Person having an even number of in one Hand, and an odd Number in the other, to tell in which Hand the odd or even Number is 17 Shock, inconceivable 88 Shower, mercurial 80 fiery 90 Silver-plate, to give a Lustre to 44 extracted from a gilded Ring 135 Sky-rockets 170 to fire under Water 198 Sound, travelling of 141, 142 Sparks, electric 93 in choked Cases 167 Sparrows, Experiments with 82 Spectre on the Table 64 Spider, artificial 84 Spirit, Cameleon 23 Spots in the Sun's Disk, to show 128 Spur-fire 166 Square Yards, to contain the Changes of the Alphabet 59 Squares, Magic 55 Squibs, to make 169 Stars, with Points, in Fire-works 188 Steam, Power of 31 Steel or Iron, to soften 135 Stone, floating 78 Storm at Sea, to represent by the Magic Lantern 63 Sulphur for Fire-works 163 Sun, fixed, with a transparent Face 189 Sun's Rays, Effects of, on different coloured Cloths 146 Swans and Ducks in Aquatic Fire-works 199