Davies Giddy met Davy in Penzance carelessly swinging on the half-gate of Dr Borlases house, and interested by his talk invited him to his house at Tredrea and offered him the use of his library. This led to his introduction to Dr Edwards, who lived at Hayle Copper House. Edwards was a lecturer in chemistry in the school of St. Bartholomews Hospital. He permitted Davy to use his laboratory and possibly directed his attention to the floodgates of the port of Hayle, which were rapidly decaying as a result of the contact between copper and iron under the influence of seawater. Galvanic corrosion was not understood at that time, but the phenomenon prepared Davys mind for subsequent experiments on ships copper sheathing. Gregory Watt, son of James Watt, visited Penzance for his healths sake, and while lodging at the Davys house became a friend and gave him instructions in chemistry. Davy was acquainted with the Wedgwood family, who spent a winter at Penzance.