Note 370 — Chapter VI · THE PROTO-SIDERIC OR EARLY IRON AGE OF WEAPONS.
Reading edition
Ingénieur des Mines: ‘Gisements métallifères du District de Carthagène (Espagne),’ Liège, 1875; a contribution to the Proc. Geolog. Soc. Belgium; and the result of extensive geological and mineralogical observation. The coloured map shows the strata-sequence (actual and in ideal order) to be tertiary limestone, iron-ore (carbonated, manganiferous, or plumbiferous); schistes; blende; schistes; silicated iron and schistes.