To six ounces of water in an earthenware dish add by degrees one ounce
of sulphuric acid (_dangerous_), and then three quarters of an ounce of
granulated zinc with three or four large grains of phosphorus. These
form a gas, amidst much effervescence, take fire and kindle the entire
surface, coruscations and spirts of flame leaping out swiftly and most
brilliantly; while a beautiful column of smoke will rise above the blue
_flames_.
_Note._—Always cut phosphorus under water, and, if burnt by it, apply
hartshorn spirits.