Dalman, Johann Wilhelm; Über Die Palaeaden, Oder Die Sogenannten Trilobiten von J.W. Dalman; Aus Dem Schwedischen Übersetzt von Friedrich Engelhart. Nurnberg, 1828. Quarto, pp. 84, 6 plates.

The work is complete and in early boards with a calf spine and modern spine label. The binding is tight with scuffing to the boards, owners book plate on paste down, earlier stamp of University of Strassburg on end sheet. Light foxing to text and plates. In very good condition.

Johan Wilhelm Dalman ( 1787-1828 was a Swedish physician and naturalist. Dalman became librarian of the Royal Swedish Academy of Sciences then director of the zoological garden and demonstrator in botany at the Karolinska Institute of Stockholm.
Dalman was mainly interested in entomology and botany but also wrote on the systematics of trilobites. In 1771 Johann Ernst Immanuel Walch (1725-1778) had coined the term trilobite. Research had focused on attempts to link trilobites to a living group of organisms such as marine fish, bivalved mollusks, chitons and various arthropods. Until Walch’s determination this had led to the trilobite pygidia often being misidentified as shells. By 1820 the term “trilobite” was accepted with the exception of Dalman who suggested the term “palaeades should replace “trilobites”. Dalman noted the weakly defined axial furrows in the Ordovician trilobite Nileus.
The trilobite Dalmanites a genus of the order Phacopida is named in Dalman’s honor. During the Ordovician and Silurian the genus Dalmanites was widespread all over the world, inhabiting a variety of climates and sea conditions. Dalman’s work is quite rare.