'Centuria Observationum et Quaestionum Botanicarum'

100 observations and questions regarding botany. On the last folio (x), the last observation is dated 28 May. Sent with the letter from David van Royen to Carl Linnaeus, 7 June 1763 n.s., "The Linnaean correspondence", linnaeus.c18.net, letter L3269. Paginated by van Royen with letters of the alphabet (and excluding j). Annotations on species names by Linnaeus in the margins