Manuscript, 'On the viscous theory of glacier motion. Part I. Containing experiments on the flow of plastic bodies, and observations on the phenomena of lava streams' by James D [David] Forbes Subject: Geology / Physics Published in Philosophical Transactions as 'Illustrations of the viscous theory of glacier motion. - Part I. Containing experiments on the flow of plastic bodies, and observations on the phenomena of lava streams'. Written by Forbes in Edinburgh. Received by the Royal Society on 13 March 1845. Read 10 April 1845. 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 5, 1851. 26 February 1845