Mechanical thermometer Size:S: 45 x 30cm a wealthy young american botany

a wealthy young american botany student

Within an inscribed oval surround

Bird identified by Catesby as 'Monedula purpurea'

attached to a long pole carried on his shoulder

showing the seated figure of Wisdom surrounded by attributes including putti holding mirrors

Mechanical thermometer Size:S: 45 x 30cm a wealthy young american botanyScheme 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