A treatise on wood engravings : historical and practical . to its face. Since the former edition of this work considerable improvementshave been made in the mode of taking casts, of which the principal iselectrotyping, by the galvanic precipitation of copper. By this processall the finer lines of the engraving are so perfectly preserved, that im-pressions printed from the cast are quite undistinguishable from thoseprinted from the original block. Before closing this subject we think it right to introduce the notice ofa new art, which, if it accomplishes all it professes, and as, judging by the
A treatise on wood engravings : historical and practical . to its face. Since the former edition of this work considerable improvementshave been made in the mode of taking casts, of which the principal iselectrotyping, by the galvanic precipitation of copper. By this processall the finer lines of the engraving are so perfectly preserved, that im-pressions printed from the cast are quite undistinguishable from thoseprinted from the original block. Before closing this subject we think it right to introduce the notice ofa new art, which, if it accomplishes all it professes, and as, judging by theannexed example, it seems capable of performing, will be a great acqui- THE PEACTICE OP WOOD EisGEAVING. G39 sition. The art was first brought out as Collinss process, but is nowcalled the Electro-printing Block process, and is managed under theinventors direction by a company established at No. 27, New BridgeStreet, Blackfriars. The object of the process is to reduce or extend, bymeans of transfer to an elastic material, maps or engravings of any The specimen given in the present volume is reduced from a lithographcopy of an early block print, four times its size, and then electrotyped * Taken from Mr. S. Leigh Sothebys Principia TyiwgrapMca, 3 vols, folio- to whosekindness we are indebted for the reduced block. 6 to THE PEACTICE OF WOOD ENGRAVING. into a surface block, so as to print in the ordinary manner of a wood-engraving. The reader will easily imagine that any plate transferred toan elastic surface distended equally, will, when collapsed, yield a reducedimpression, and vice versa. The only drawback to this process seemsto be the want of depth in the electro-type where there are largeunengraved spaces. Such plates will want good bringing-up and verycareful printiiig. The unequal manner in which wood-cuts are printed, is ofteninjurious both to publishers and engravers; for, however well a subjectmay have been engraved, or whatever may have been the expenseincurred,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectwoodengraving, bookye
