TY - JOUR T1 - 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. Addressed to Humphry Davy, Esq. Sec. R.S JF - Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London (1800-1843) VL - 1 SP - 300 EP - 303 PY - 1800/01/01/ UR - http://dx.doi.org/10.1098/rspl.1800.0164 M3 - doi:10.1098/rspl.1800.0164 AU - Richardson, W. ER -