Paper, 'On the effect of the presence of metals and metalloids upon the electric conducting power of pure copper' by A [Augustus] Matthiessen and M Holzmann Subject: Physics Published in Philosophical Transactions as 'On the effect of the presence of metals and metalloids upon the electric conducting power of pure copper'. Communicated by Prof [Charles] Wheatstone. Received by the Royal Society on 14 March 1860. Read 26 April 1860. 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 10, 1860. [1860]