Improved machine for sampling sea-water at depth Finish:none Illustration from A tour in

Illustration from A tour in Scotland and voyage to the Hebrides

Lord Salisbury (left) and Sir Stafford Northcote (right)

Barnes was elected a Fellow of the Royal Society in 1911

View of Fishmongers' Hall

Prince Andrew and Princess Anne at Windsor Castle to celebrate her Birthday

Improved machine for sampling sea-water at depth Finish:none Illustration from A tour inPlate 12 from the paper 'On the specific gravity, and the temperature of sea waters, in different parts of the ocean, and in particular seas; with some account of their saline content', by Alexander Marcet, Philosophical Transactions of the Royal Society, vol. 109 (1819), pp. 161 208. The instrument was made by John Newman of Lisle Street London and used by William Edward Parry's 1819 1820 expedition Baffin Bay aboard HMS Hecla. Original: pencil on