The essentials of illustration, a practical guide to the reproduction of drawings & photographs for the use of scientists & others (1915)
Hill, Thomas George, 1876- · London, W. Wesley & Son · leaf 129
thus obtained will be in rehef, the highlights being at a higher level than the shadows. A waxmould of the gelatine positive is then taken, coveredwith a thin layer of plumbago and electrically coveredwith copper. The casting so obtained is built upwith metal and then mounted on wood in the same… … 86 COST RELATIVE COST OF BLOCKSAND PLATES THE question of cost is one of very great difficulty;in all probability no two firms will agree in theirquotations for different kinds of work, and thereason for this lies in the large number of factors involved,many of which are very difficult to compute…
Engraving -- Printing · Illustration of books · Photomechanical processes
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