Manuscript, 'On the alterations that have taken place in the structure of rocks, on the surface of the basaltic country in the counties of Derry and Antrim' from William Richardson to Humphry Davy Paper regarding rock structures surrounding Giant's Causeway, Northern Ireland. Subject: Geology Published in Philosophical Transactions as 'A letter on the alterations that have taken place in the structure of rocks, on the surface of the basaltic country in the counties of Derry and Antrim'. Sent by Richardson from Richhill. 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. 18 April 1808