Paper, 'On the structure, functions, and homologies of the manducatory organs in the class Rotifera' by Philip Henry Gosse 69 manuscript pages and 21 plates showing the anatomy of various species of Rotifera. Subject: Zoology / Physiology Published in Philosophical Transactions as 'On the structure, functions, and homologies of the manducatory organs in the class Rotifera'. Communicated by Thomas Bell. Received by the Royal Society on 5 January 1855. Read 22 February and 1 March 1855. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 7, 1856. 20 December 1854