class="pginternal" tag="{http://www.w3.org/1999/xhtml}a">43
Guinea, penetrative 132
Gunpowder 165
exploded by reflection      125
Brimstone and Charcoal, to meal for Fire-works      165

Halo, artificial 80
Horn, to make Moulds of 134
Horn, to soften 134
Hour of the Day or Night told by a suspended Shilling 152
Hydrogen Gas, to procure 159
Hydrogen Gas, to fill a Bladder with 159

Illuminations, artificial 22
Illuminations, chemical 36
Illusion, alternate 146
Incendiary, unconscious 88
Indromacus 103
Ink, invisible 23
Gold, Silver, Yellow, Red, Green, Violet, and Grey      24, 25
secret Correspondence by Means of      25
Ink, golden 41
Ink, white 42
Iron, transformed into Copper 36
Iron, transformed into Silver 36
Iron, melted in a Moment and run into Drops 37
Iron, or Steel, to soften 135
Ivory, to cast Figures in Imitation of 134

Kings, the four inseparable 116
Kite, electric 87

Lamp to burn twelve Months without replenishing 29
Lamp Chronometer 46
Landscape, artificial 66
Landscape, to draw correctly 67
Lead, metallic, produced from the Powder 141
Leech, a Prognosticator of Weather 157
Leyden Phial 94
Light, rays of 143
Light, refraction of 144
Light, travelling of public@vhost@g@gutenberg@html@files@32492@[email protected]#Page_145"