Plate, man posed for portrait with compass below figure by unknown artist Engraving of a man posed for a portrait. A small flap covers the bottom of the man's torso. On the flap is a graphite drawing of a compass. This illustration was not published as part of the paper. Subject: Physiology Wollaston's paper was published in Philosophical Transactions as 'On the apparent direction of eyes in a portrait'. Read 27 May 1824. [1824]