n. The art of fixing on the surface of a lithographic stone by the agency of the action of light upon bichromated gelatin combined with albumen, and by other manipulations, an image suitable for reproduction in ink by impression in the manner of an ordinary lithograph; also extended to include processes of similar character in which the transfer is not made to stone; specifically, the process of reproducing in ink any design or picture executed on prepared stone by means of photography, either directly or by transfers from photographs.