This work investigates the geological occurrence and economic significance of manganese deposits within Canada. The book, authored by H. Peareth H. Brumell, likely draws upon geological surveys and mining reports from the late 19th century to detail the mineralogy, distribution, and potential extraction methods for manganese. It aims to provide a foundational understanding of this resource for geologists, mining engineers, and policymakers of the era.

As a historical geological survey from 1892, 'Notes on Manganese in Canada' is likely regarded as a foundational, albeit dated, reference for the study of Canadian mineral resources. Its value today lies in its historical context and the primary data it presents on manganese deposits at the time of publication. The work would have served as an important technical document for geologists and mining professionals seeking to understand and exploit Canada's mineral wealth.