| Show armored ships cant go north the remarkable discovery of the efi feet of temperature on the density of nickel steel is likely to have an important bearing on ita use in the construction st of war vessels after this variety of steel has been bozen it is readily magnetized and moreover its density is permanently reduced fully 2 per cent by the exposure to the cold it is stated that a ship of war built in the temperate climate of ordinary steel and clad with say tons of nickel steel armor would bo destroyed by a visit to the arctic regions owing to the contraction of the steel by the extreme low temperature new york journal |
