
Trephine used in experiments on Neolithic trephination
1918-1920
1918-1920
1903
1890-1900
1890-1900
1915
4000-2001 BCE
1914-1918
1890
1878
1915-1916
c.1912
c.1912
c.1912
c.1912
1892-1902
1893
1904
1911
1900-1920
1903 (original); 1982 (model)
1830 (original); 1967 (model)
1885
1897
1897
1897
1930 (replica); 1834 (original)
circa 1915
1909
1900
circa 1920
1877
circa 1890
circa 1890
circa 1880
1899
1901
1901
circa 1890
circa 1900
1907
1896
circa 1900
1895-1905
circa 1917
circa 1920
1897
1920
1901
1897
1919