Manuscript, 'On the nature of the sun's magnetic action upon the earth' by Charles Chambers Subject: Geodesy Published in Philosophical Transactions as 'On the nature of the sun’s magnetic action upon the earth'. Communicated by General [Edward] Sabine. Received by the Royal Society on 30 April 1863. Read 21 May 1863. 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 12, 1863. [1863]