| Show tantalizing metal A rare metal illch has attracted universal attention during the last two years while hile before it was scarcely known outside of some scientific laboratories Is tantalum so named by its discoverer ekelberg on ac count of the tantalizing difficulties experienced in extracting the metal from its ores tantalum Is one of the hardest sub substances B tance 8 known and its use for scientific instruments will doubtless be developed in a very remarkable degree engineering mega maga kin zinc |