Drawings, release of ova from Campanularia dichotoma by [Joseph Jackson Lister] Plate 10, figures B2-4 showing the release of ova from the ovaries of the Campanularia dichotoma [Obelia dichotoma]. Inscribed with publication and plate details. Graphite inscription verso reads 'MSS p.17'. Not signed. Watermarked 'J Whatman Turkey Mill 1835'. The manuscript for this paper is wanting. Subject: Zoology Published in Philosophical Transactions as part of paper titled 'Some observations on the structure and functions of tubular and cellular polypi, and of ascidiæ' by Joseph Jackson Lister. Received by the Royal Society on 1 January 1834. Read 6 and 13 March 1834. [1835]