=Europe.=--European production increased about 50 per cent. between 1913 and 1918, mostly in _Portugal_, and the output of tungsten ores in Portugal apparently did not reach its maximum. Both placers and veins have been exploited and there seems to be placer material still to be worked as well as veins that are said to be far from exhausted. The official statistics of production given by Portugal during the greater part of the war are declared by engineers conversant with the situation to have been too low, because of ore being smuggled into Spain and on board ships bound for England. On the other hand, in 1918 England and France objected to the shipment of Portuguese ore to the United States, but would not pay equivalent prices. The Portuguese government therefore issued an order preventing the export of tungsten ore except at fixed prices approaching the current American prices. American owners could not work their mines successfully under the British-French embargo, with the result that the output was probably much smaller than in 1917. In spite of the uncertainties the official estimates have been used as far as they are available, for no better figures are at hand. As to the Spanish output, prophecy is difficult because the data concerning the mines are meager. It seems probable that under similar prices about the same output as in the past may be expected from the English and French deposits. The English output decreased in 1917 and increased only a little in 1918. No accurate data are available from France. The German and Austrian deposits were probably worked so hard during the World War that less is to be expected from them than they have heretofore produced. =Summary.=--The principal changes in the distribution of production during the next few years would seem to be: Further development in Korea; possible development in Manchuria; development of deposits in southern China and Siam; further development in Bolivia; a tendency in the United States to largely increased production from deposits in the Great Basin; and development of both veins and contact-metamorphic deposits in Mexico. Production will possibly decrease in the Atolia and Boulder fields of the United States; and in Australia, Japan, Germany and Austria. POLITICAL AND COMMERCIAL CONTROL