... This writer would also suggest consideration of the fact that Leonardo paints John at different ages, one as the child sitting to the left of Mary in “Virgin of the Rock” and then older seated to Jesus right at “The Last Supper". ...
Could you elaborate on this, please?
“Virgin of the Rocks” by Leonardo da Vinci, displayed in the Louvre, Paris.http://upload.wikimedia.org/wikipedia/commons/f/f5/Virgin_of_the_Rocks.jpg
“Virgin of the Rocks” by Leonardo da Vinci, National Gallery, London.