(2,3): Siebentes Heft. oder des zweiten Theils drittes Heft: Mit vier und zwanzig illuminirten Kupfertafeln
A seventh part of an early nineteenth-century German natural history work by Eugen Johann Christoph Esper, published in 1808 by Heidelberg University Library and issued as a set of illuminated copper plates for botanical readers. The four pictures are hand-coloured plates of seaweeds (fucus species) drawn as numbered specimens on pale paper, with brown, olive, green and red fronds set against plain backgrounds. A designer could draw on their botanical precision, the tapering branching forms, and the soft watercolour-like tints for organic pattern or vintage scientific layouts.
