Captain Scoresby’s Ten-gallon Fir-Cask in the Greenland Sea

In 1810, in the Greenland Sea, William Scoresby Jr., the captain of Resolute, who was 21 years old, used an oceanographic instrument made from a ten-gallon wooden cask. It was built following Lord Joseph Banks’s instructions. The cask was made of two-inch-thick fir planks, “as being a bad conductor of heat.” At each end of…