2 NOVEMBER 1918, Page 17

The Imperial Institute, with the advice of the Mineral Resources

Committee, has published an instructive Map of the Chief Sources of Metals in the British Empire (5s. 6d. post free), with tables showing at a glance the relation of the Empire outputs to those of othe1

countries. The British Empire in 1915 produced more than half the world's output of gold for the year, nearly a fifth of the silver, an eleventh of the copper, two-thirds of the tin, a sixth of the lead, a tenth of the zinc, a tenth of the iron ore, more than half the manganese ore, three-fourths of the nickel, a third of the tungsten ore, and so on. The onlymetals in which the Empire has been deficient are platinum, mercury, and vanadium, but it is known to possess deposits of these metals which may be worked in the near future.