Humphry Davy, British chemist and inventor, late 19th century. Artist: Unknown
Humphry Davy, British chemist and inventor, late 19th century. Obverse of the Royal Society Davy medal, nstituted in 1877 and awarded annually for an outstanding recent discovery in chemistry. As well as a bronze medal, the winner receives £1000. Davy (1778-1829) discovered the anaesthetic effects of laughing gas (nitrous oxide). In 1801 he was appointed lecturer at the Royal Institution, where he investigated, with his assistant Michael Faraday (1791-1867), his theory of volcanic action. Using electrolysis, Davy isolated the metals barium, calcium, magnesium, potassium, sodium and strontium, as well as proving that chlorine was a chemical element. He is probably best known for his invention in 1815 of the miners' safety lamp, which enabled deeper, more gaseous seams to be mined without risk of explosion.
© Oxford Science Archive / Heritage-Images
Arthur Quiller-Couch, English poet, novelist, anthologist and critic, c1927. Artist: Unknown
Arthur Quiller-Couch, English poet, novelist, anthologist and critic, c1927. Quiller-Couch (1863-1944) was born at Fowey, Cornwall. He compiled The Oxford Book of English Verse 1200-1900 which was revised in 1939. He was appointed professor of English literature at Cambridge in 1912. From Famous British Authors, a set of cigarette cards. (London, 1927).
© Ann Ronan Picture Library / Heritage-Images
Coastal rocks and pebbles
Coastal rocks and pebbles. These rocks and pebbles have formed by coastal erosion on the Lizard Peninsula, Cornwall, UK. The rocks and minerals include serpentine (black-green, with veins of red and brown). Many of the rocks are igneous or metamorphic, with patterns due to granite and quartz veins.
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
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