Paper, 'On the nature of the force by which bodies are repelled from the poles of a magnet; to which is prefixed an account of some experiments on molecular influences' by John Tyndall 44 manuscript pages including one figure and two separate plates. Subject: Physics Published in Philosophical Transactions as 'The Bakerian Lecture.— On the nature of the force by which bodies are repelled from the poles of a magnet; to which is prefixed, an account of some experiments on molecular influences'. Received by the Royal Society on 31 October 1854. Read 25 January 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. [1854]