Chemiglyphic

This I have great expectation of determining to be a practicable method of producing a chemiglyphic line-engraving; but the essential idea of this is probably due to M. Gaudin instead of myself.

Twenty-five years later the germs of the collotypic processes were just being hatched out, and to-day the brood of photographic, collotypic, and chemiglyphic processes has become so numerous that only a Special Committee of some future Pan-Graphic Convention will ever manage to get their very names disentangled.