Mechanical thermometer mb-width 3518 Surrounded by other seated figures

Surrounded by other seated figures

and appear in the balconies above each section

meets the Russian Bear

'Salle-a-Manger

10th April 1982

Mechanical thermometer mb-width 3518 Surrounded by other seated figuresScheme for a thermometer using temperature variations in an iron rod to move a dial on a clock face temperature scale. The textual account notes that the melting points of metallic elements might be tried and marked upon the scale. From the manuscript copy of 'A discourse concerning the usefulness of thermometers in chemical experiments together with a description and uses of a new invented metalline thermometer', by Cromwell Mortimer. The drawing is