Unpublished paper, 'On the ferrosesquicyanuret of potassium' by Alfred Smee Smee examines the action of chlorine upon the ferrocyanate of potassa [potassium ferrocyanide], and the conversion of the latter into ferrosesquicyanuret. He proposes methods for obtaining uncontaminated ferrosesquicyanuret. He includes an appendix detailing the action of the sodo ferrocyanate of potash on a series of metals. Subject: Chemistry Received 30 March 1840. Communicated by P M [Peter Mark] Roget. Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 4 of Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society] as 'On the ferrosesquicyanuret of potassium'. 10 January 1840