This collection consists of an unpublished manuscript (138 pages), "Explication de Quelques Termes de Botanique," concerning botanical terminology and classification and the historical development of botany. Pages 1–88 concern pre-Linnaean classification, particularly the work of Andrea Cesalpino (1519–1603), Robert Morison (1620–1683) John Ray (1627–1705) and Joseph Pitton de Tournefort (1656–1708). Pages 88–138 comprise a detailed discussion of the system of Carolus Linnaeus (1707–1778).