Spherical concretion possibly a calculus from unknown animal, provenance unknown, 1830-1920 Spherical concretion possibly a calculus from unknown animal 1830-1920
Spherical, hard concretion possibly a calculus of unknown animal, provenance unknown, 1830-1920 Spherical, hard concretion possibly a calculus of unknown animal 1830-1920
Calculus of a tonsil, from a case treated by Dr. G. William Hill, English, 1890-1930 Calculus of a tonsil, from a case treated by Dr. G. William Hil' 1890-1930
Neolithic burial illustrating urinary calculi in Sudanese tribe, from Jebel Moya, 1000-400BC, excavated by Sir H. Wellcome, 1910-1914 Neolithic burial illustrating urinary calculi in Sudanese tribe 1000-400 BCE