Weinmann, Johann, Aconitum Lycoctonion, 1736, mezzotint and engraving finished by hand, 12.75 x 8.5 inches, from "Phytanthoza Iconographia (or Duidelyke Vertoning.)". It was published in Amsterdam by Zacharias Romberg between 1736 and 1748. This is the Dutch language edition of the 18th century botanical master-work. --- The work contained 1,025 mezzotint engravings, printed in color, finished color applied by hand. "The copperplates were printed according to Johannes Teyler's invention, patented 1688; they are engraved in combination with mezzotint printed in colour and finished by hand" (Landwehr 212). --- It was the first published work to include engravings by the greatest botanical artist of the eighteenth century-- Georg Dionysus Ehret. It provided one of the most comprehensive botanical references of the 18th century. In a gold wood frame and linen mat measuring 21 x 17.5 inches. in seemingly good condition unexamined outside of the frame.