Davy, Sir Humphry, 1778-1829. Baronet. Chemist. Natural Philosopher.

Humphry Davy was born the son of Robert Davy, a wood carver, and Grace Millet in Penzance, Cornwall. He taught himself a great deal through reading, but also attended local grammar schools in Penzance and Truro. In 1795 he was apprenticed to John Bingham Borlase, surgeon of Penzance, where he was introduced to the rudiments of science by Robert Dunkin, a saddler. In 1798 he joined the Pneumatic Institution at Bristol as an assistant to Thomas Beddoes. There he began researches into heat and light which he later published. In 1799 he published the first volume of West Country Collections and Researches, Chemical and Philosophical, chiefly Nitrous Oxide and its Respiration. He experimented with nitrous oxide and suggested that it could be used for surgery due to its anaesthetic properties, however this was ignored and not used until much later in the century. In 1801 he gave his first lecture at the Royal Institution of Great Britain (RI) and became Director of the Chemistry Laboratory. In 1802 he became Professor of Chemistry at the RI which he held until 1812. In 1803 he gave his first lecture to the Royal Society, of which he was elected a Fellow and received its Copley medal in 1805. In 1804 he entered Jesus College Cambridge perhaps to finish his medical studies, but he never attended. As Assistant Lecturer at the RI, he undertook research for the Managers, and he also became Chemistry Professor to the Board of Agriculture and Internal Improvement (a non-government organisation). In particular he researched into the problems of using oak bark for the tanning of leather and discovered that catechu from mimosa of India was much better. In 1805-1806, he toured Ireland and Cornwall with Thomas Bernard to research into mineralogy. After this he was released from investigations for the RI and in 1807 he won the Napoleonic Prize from the Institute of France for his discoveries of the constitution of oxymuratic acid and for demonstrating the existence of potassium, sodium and chlorine by agency of a galvanic battery, thus developing the theory of electrochemical action. In 1812 he was knighted by the Prince Regent and also married a wealthy widow, Mrs Jane Apreece. He then retired from the RI and was made Honorary Professor. In 1813 he visited laboratories in France, Italy, Switzerland and Germany with his wife and Michael Faraday (1791-1867) as his assistant, secretary and reluctant valet. He experimented with pigments and combustion of diamonds as well as iodine which he discovered at the same time as the French chemist, Joseph Louis Gay-Lusaac (who called it iode). On his return to London in 1815, Humphry was asked to look into the problem of explosions in mines. He discovered that gas and the flames used to give light to miners caused the explosions, so he designed the miners safety lamp. He toured the continent again in the late 1810s. In 1820 he became President of the Royal Society which he held until 1827. During the 1820s, he discovered that by applying zinc or iron to the copper bottoms of ships, corrosion could be prevented. However, it was deemed a failure as plant life in the sea would adhere to the ships thus causing dragging. In 1826 he travelled to Europe again where he continued to work until his death in 1829. He was buried in the cemetery of Plain-Palais, Geneva and there is a tablet in his memory at Westminster Abbey.