A 20th Century porcelain leech jar marked "Hirudines" and with "George Wenderoth Cassel. D.R.P. No 38002" on the mid section container. This section which has a perforated base, hangs supported by the outer jar and raised above water in the bottom of the main container. The lid is perforated so as to allow the leeches to breathe. This fine example comes with a 1949 price list for leeches obtained through a German Pharmacy.