Unpublished figures, pulmonary artery and interlobular surface of a sheep's lung by James Newton Heale Four figures in coloured ink, labelled figures a-d, showing 'Sheep's lung: Upper surface, pulmonary artery yellow, pulmonary vein red, 20 diam.', 'Cut surface, artery yellow, vein red, 20 diam.', 'Interlobular surface, artery yellow, vein red, 10 diam.', and 'Interlobular surface, artery yellow, vein red, 30 diam.' respectively. The plate is labelled 'C. No. 4'. Subject: Anatomy / Physiology 1860