Clues found in an old book on the history of the school suggest the object was brought back from Egypt by a 19th century brewer and social activist from Lublin who funded the construction of the school building.
The gory details revealed that they were laid in shallow wells, which were then plastered over and sometimes reopened so that certain body parts could be removed, or so that earlier remains could be moved to make room for new corpses.
The 250-year-old remains of Saint Jadwiga, wife of Polish Piast ruler Henry I the Bearded, were discovered inside a silver casket during conservation work after art conservators spotted an anomaly on a stone slab.
The bones of a prehistoric animal have been found at the site of the future Brodno metro station in Warsaw's eastern Brodno district. Initial estimates put the time the aurochs lived at 6,000 B.C., Warsaw Town Hall announced on Thursday.
The remains are thought to be those of an aristocratic boy who died back in 1755
The new project by researchers at the University of Łódź will see the remains of 200 people digitised and put online.
The discovery of finger bones from the hand of the Neanderthal child are more than twice as old as the previous oldest find of hominid bones in the area - the remains of three teeth dated to 52,000-54,000 years. The child may have been attacked and killed by a bird of prey or a scavenger may have chewed its hand after death.