Unpublished paper, 'Additional experiments on the fermentation of alkaline and earthy bodies by chemical action when carbonic acid is present' by Robert Rigg Riggshares observations and results of several experiments in which sugar, water, and yeast were employed, and from which he concludes that alkaline and earthy matters are formed by chemical action. He concludes by offering suggestions towards extending the inquiry into the subject of the formation of bones of animals by the action of the powers inherent in their organization. Subject: Organic chemistry Received 20 June 1839. Read to the Royal Society on 20 June 1839. 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 'Additional experiments on the formation of alkaline and earthy bodies by chemical action when carbonic acid is present'. June 1839