A Philosopher. Conduit Street

This hand-colored etching depicts an elderly man standing behind a table filled with scientific apparatus. He holds a wand in one hand and a glass containing some liquid in the other.
The image represents Adam Walker (1731-1821), an inventor and educator from the north of England who settled in London and read lectures on science at his house at 42 Conduit Street, Hanover Square.
The “X” in the bottom left corner is the mark of the popular English caricaturist, James Gillray. The text at the bottom—“Pubd March 28th 1796. by H. Humphrey No 37 New Bond Street”—refers to Hannah Humphrey (fl. 1778-1822), the domestic partner of Gillray and publisher of many of his images.
Ref: Arts Council of Great Britain, James Gillray, 1756-1815: Drawings and Caricatures (London, 1967).
“Adam Walker” inDictionary of National Biography.
Adam Walker A System of Familiar Philosophy in Twelve Lectures (London, 1799).
Currently not on view
date made
place made
United Kingdom: England, London
Physical Description
paper (overall material)
overall: 9 in x 7 in; 22.86 cm x 17.78 cm
overall: 19 in x 19 in x 7/8 in; 48.26 cm x 48.26 cm x 2.2225 cm
ID Number
catalog number
accession number
See more items in
Medicine and Science: Physical Sciences
Science & Mathematics
Prints from the Physical Sciences Collection
Data Source
National Museum of American History


Add a comment about this object