ELECTROTYPES AND STEREOTYPES

can be made from them the same as from wood-cuts.

They have a printing surface as smooth as glass, and the lines are

engraved deeper than they are in hand-cut plates. Notwithstanding the

_low prices_ at which they can be furnished, they are very much

superior to wood-cuts, and in some classes of work are rapidly

taking the place of lithography.

Scientific American, Vol. XXXVII.—No. 2. [New Series.], July 14, 1877 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures · 第 139 / 213 题