Note 13 — IX MONDINO AND THE MEDICAL SCHOOL OF BOLOGNA

Physicians wore a particular garb consisting of a cloak and often a mask, supposed to protect them from infections at this time, so that it was not difficult to make a characteristic picture as a sign for a pharmacy. These symbolic signs were much commoner and very necessary when people generally were not able to read. It is from that period that we have the mortar and pestle as also the colored lights in the windows of the drug stores, and the many-colored barber-pole. Also the big boot, key, watch, hat, bonnet, and the like, the last symbolic sign invention apparently being the wooden Indian for the tobacco store.