One large Jar, two lids, “Fresh plaster A Apl. Ist. 1818, jar broken" James Watt's Garret Workshop 1818
Pear shaped glass, curved tube from top, straight tube from bottom James Watt's Garret Workshop 1790-1819
Memo: “These are fired by 80 degrees of Wedgwood’s thermometer." James Watt's Garret Workshop 1790-1819
Zinc vessel, closed one end, three tube projections, wire with winch handle through centre James Watt's Garret Workshop 1790-1819