Unpublished paper, 'Experiments made on a piece of peña silver, as to its capability of holding water; saved from the Lady Charlotte, wrecked on the Coast of Ireland in December 1838' by William Debonnaire Haggard Haggard describes peña silver, or 'plata peña', which is silver collected by quicksilver after the ore is pounded; it is then placed in a mould, and by great force the quicksilver is squeezed out, forming a mass resembling dry mortar of great porosity. He measures the weight of the peña silver as it dries. Subject: Chemistry Received 7 January 1839. Read 24 January 1839. Communicated by Sir Henry Ellis. 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 'Experiments made on a piece of peña silver, saved from the Lady Charlotte, wrecked on the coast of Ireland in December 1838, as to its capability of holding water'. January 1839