Paper, 'Continuation of experiments for investigating the cause of coloured concentric rings, and other appearances of a similar nature' by Wm [William] Herschel Subject: Physics Published in Philosophical Transactions as 'Continuation of experiments for investigating the cause of coloured concentric rings, and other appearances of a similar nature'. Written by Herschel at Slough near Windsor. Read 23 March 1809. 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 1, 1832. 9 December 1808