Sub-subseries consists of manuscript essays and addresses on scientific subjects falling into four categories: (1) popular lectures, not only on geology, but also on biology, entomology, physics, archaeology and even linguistics; (2) mining, particularly of Nova Scotia coal, with some reports and maps; (3) geology, largely of Nova Scotia, and (4) palaeontology (approximately 72 cm). Some of the materials in sub-subseries are drafts of works later published, and these papers also contain 80 cm of Dawson's printed books and articles.