Average price in dollars per troy oz. of refined metals of the platinum group in New York ──────────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬──────┬───── │1910.│1911.│1912.│1913.│1914.│1915.│1916.│1917.│1918. │1919. ──────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼──────┼───── Platinum │ 33│ 43│ 46│ 45│ 45│ 50│ 84│ 103│106[M]│ 114 Iridium │ │ │ │ │ 65│ 83│ 94│ 150│ │ Iridosmine│ │ │ │ │ 33│ 35│ 45│ 80│ │ Palladium │ │ │ │ │ 44│ 56│ 67│ 110│ │ ──────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴──────┴───── 1910, 1914, 1915, 1916 and 1917—_U.S. Geol. Surv. Mineral Resources_. 1911, 1912, 1913, 1918 and 1919—_Eng. and Min. Journ._, vol. 107, No. 2, p. 77. Footnote M: The price was fixed on May 14, 1918, at $105. CHAPTER II SOURCES OF SUPPLY OF PLATINUM AND ALLIED METALS (_a_) BRITISH EMPIRE The outputs of platinum metals in different parts of the British Empire are shown in the table on p. 14. EUROPE UNITED KINGDOM There is no known occurrence of platinum in the United Kingdom, but there has always been much trade done there in the platinum metals, England having been the second largest importer of the big consuming nations. The following were the importations of Russian platinum for five periods since 1863: _Period_ _Oz._ 1863–1880 512,005 1881–1890 167,999 1891–1900 437,645 1901–1910 259,111 1911–1915 71,624 [15] p. 923 The above figures do not include receipts of platinum for seven different years since 1863, for which there are no records. The table on the next page gives a summary of total imports of platinum metals for the years 1910–1918, with the countries of origin. The platinum market in London was controlled by the Government from January 1916 to December 1918, Johnson, Matthey & Co., Ltd., acting as buyers. On December 26, 1916, platinum was declared contraband. _Imports of Platinum Metals, wrought and unwrought, into United Kingdom_ (_in troy oz._)