Letter to Sir Charles Lyell from George Scrope concerning a paper dealing with the Upheaval Theory which Lyell had submitted for publication in the Royal Society's Philosophical Transactions. Scrope is pleased with the paper which contains a challenge to the theory which he describes as an "intolerable absurdity". He discusses Homboldts Cosmos which he gave little credence to and goes on to discuss lava flows in Vesuvius, Madeira and Tenerife and the formation of pumice, 29 July 1858.