Complex sentence: From 1838 onwards be conducted a special department of correspondence, relating to vegetable products, at the East India House, and at the time of his death he had just completed there an extensive and valuable museum of technical products from the East Indies.
Split into simpler sentences: From 1838 onwards be conducted a special department of correspondence, relating to vegetable products, at the East India House. At the time of his death he had just completed there an extensive and valuable museum of technical products from the East Indies.