Plate, man posed for portrait facing left and right by unknown artist Graphite drawing of a man posed for a portrait. One flap covers the lower half of the man's face, offering a different positioning of the man's face in relation to his eyes. The flap shows the man looking left, and the portrait underneath shows the man looking right. 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]