Rare Transactions of the Royal Society of Arts and Sciences, Mauritius; New Series Vol. XVIII 1886, 211 pp. plus supplement and summary. Contains notes on Society Meetings, Mauritius sugar, Madagascar volcanoes etc. Original paper cover, contents complete. As with all of this issue, paper quality was poor, so there is some toning and foxing. Cover has water mark on cover but not affecting contents. Cover has tear in top centre and corner piece missing. Stamp of the Royal Society on cover. Very difficult to get hold of, and rarely offered.