ust translate the originals into lines, so that much consultation would be necessary. Further, a line engraving takes a long time to make, and most publishers would certainly look at the expense.
In the past, however, the line engraving was much used, and very beautiful work was often accomplished. The following works contain outstanding examples.
Bojanus: Anatome Testudinis Europaeae, Vilnae, 1819-1821. The plates are beautiful engravings by Lehmann after the drawings by the author.
Chatin: Anatomie Comparee des Vegetaux. Good steel engravings illustrating the structure of various plants.
Curtis: Flora Londinensis, London, 1777. The illustrations are hand-coloured copper engravings by Sowerby and others, many of which, particularly the earlier ones, are of outstanding excellence. The engraving is often nothing more than the mere outline of the plant, whilst in cases where the structures are more massive, a certain amount of shading is used. The colouring