Saint Mark?

Le Marche des Carabos This is an odd one but a belgian translated the hourglass or eggtimer in windows as a 'Sand Walker' The prehistoric ancestor of cats and dogs had a fifth toe that was semi-opposable... before they learnt how to make these apes hunt for them...by teaching them how to hunt. I am sure this book was on GW's library shelf as a boy : http://www.childrensbooksonline.org/Marquis_of_Carabas/index.htm