1. IOR/P/2509 Nov 1885 nos 06-07 Reference (shelfmark): IOR/P/2509 Nov 1885 nos 06-07 Title: Paper by Dr J E De Vrij, On the Extraction of the Alkaloids from Cinchona Bark by Dilute Acids Scope & Content: pp 469-74. Collection Area: India Office Records and Private Papers Languages: English Date Range: Sep 1885-Nov 1885 Extent: 6 pages