Drawings, vascular tissue from Coralliidae by S W Leonard Plate 16, figures 1-2 and 5-7 showing vascular tissue from various Coralliidae, including the Millepora alcicornis [sea ginger] and the Pavonia boletiformis [Pavona cactus; cactus coral]. Inscribed with publication and plate details recto and verso. Signed at bottom in ink, 'Drawn by S. W. Leonard, from Observation with the Microscope.' Subject: Marine Biology / Zoology Published in Philosophical Transactions as part of paper titled 'On the organic tissues in the bony structure of the Corallidæ' by James Scott Bowerbank. Received by the Royal Society on 19 April 1842. Read 21 April 1842. [1842]