An allegory of learning: boys learn to read, write, and calculate in the foreground, in the middleground an elderly man uses dividers on a globe, in the background men take books from shelves. Engraving, 1756.

Licence: Public Domain Mark

Credit: An allegory of learning: boys learn to read, write, and calculate in the foreground, in the middleground an elderly man uses dividers on a globe, in the background men take books from shelves. Engraving, 1756. Wellcome Collection. Source: Wellcome Collection.