uorice

or liquorice juice is largely imported from the south of Europe in rolls or sticks, packed boxes of about 2 cwt. each. to write.] The art of tracing letters, figures, and other designs on stone, and of transferring them to paper by impre ion. It was invented in 1796 by Alois Senefelder in Bavaria, where the most suitable stones are still quarried. The stone is a kind of limestone, composed of lime, clay, and silica, usually of a gray color and of a very fine grain. The stones are found in layers vary¬ ing in thickne , the thickne required for printing-stones being from 1 yi to 5 inches, according to size. They are ground face to face with sand and water, until the surface of both stones is perfectly level. After being carefully polished with a smooth polishing-stone they are ready for use. Writings or drawings may made on the stone with a fine pen or brush, drawn on paper having a specially prepared sur¬ face, and then transferred to the stone. The methods of printing, consisting of etching out the spaces between the lines of drawing with acid, inking, etc., are too complicated to be here described. Chromo-lithographs are lithographs in which many colors are printed in one picture. As each color is printed from a separate stone, from three to thirty stones are often used produce colored pictures.