Tiny stylized containers are painted on some apothecary jars. Some of these containers resemble urns with handles. This may originate from the 'bowl of Hygeia', a bowl with a snake, which is sometimes used as an international symbol of pharmacy. Other containers are closer to the broad shallow Roman dishes known as patera.
“Containers,” Exhibits, accessed August 22, 2017, http://utswlibrary.omeka.net/items/show/147.