Plate, plate IX showing ducts beneath capsule injected with dye by unknown artist Plate IX containing figures 1-4, all unpublished, showing the ducts beneath the capsule injected with red and blue dye. Subject: Zoology / Anatomy Published in Philosophical Transactions as 'On the ultimate arrangement of the biliary ducts, and on some other points in the anatomy of the liver of vertebrate animals'. Received by the Royal Society on 14 June 1855. Read 21 June 1855. 23 December 1854