THE process, briefly described, is as follows. The Instantaneous or Fac-Simile Printing Ink is made in sticks, to be rubbed like Indian Ink, as well as in a liquid state in Bottles, price One Shilling each. The ink should be used on ordinary paper, of a good quality, and for very elaborate Drawings, Whatman’s drawing paper is recommended. The paper must be kept free from finger touches and grease; and while the drawing is in progress, it is well to have a piece of loose paper under the hand, which serves to keep the paper clean and to try the pen on after each supply or dip of ink. The lead pencil may be used and left on the paper, as the strokes will not interfere with the printing; and the Ink Drawing must on no account be smeared or rubbed with India Rubber, &c.

For Circulars, Fac-Similes of old MSS., and Commercial purposes, the ordinary pen will do; but for Drawings, a fine steel pen or crow-quill should be used.

Drawing or writing executed with the ink should be sent flat, or round a roller, to Messrs. Bemrose & Sons, who will then print from it any required number of copies in exact fac-simile.