(In oz. troy.) ───────────────────┬─────┬─────┬─────┬───── │1915.│1916.│1917.│1918. ───────────────────┼─────┼─────┼─────┼───── Platinum │3,078│3,782│4,913│4,465 Palladium │5,474│ │ │ Iridium and Rhodium│ 973│ │ │ ───────────────────┴─────┴─────┴─────┴───── Messrs. Johnson, Matthey & Co., Ltd., have kindly supplied the following figures of platinum-extraction from these residues: Oz. troy. 1916 3,722 1917 4,719 1918 4,958 The British America Nickel Corporation, who are developing some large deposits in the same district, are also erecting a refinery near Hull on the Ottawa River. It is stated that they will employ the Hybinette process of electrolytic refining, and expect to obtain a high recovery of the precious metals[29] p. 425. With gradual improvements in the refining process, and with the refining of the whole of the matte produced, instead of a portion only, as at present, it seems probable that the production of platinum metals by the three nickel companies may in time exceed 10,000 oz. per annum. The 1919 report of the Ontario Bureau of Mines shows that in 1918 the International Nickel Co. treated 62,250 tons of matte for 650 fine oz. of platinum, 787 oz. of palladium, and 473 oz. of metals of the rhodium group. This cannot be used as a basis of calculation, as the proportions are not constant. On the Quinn claims, near the Crœsus Mine, Munro Township, is auriferous quartz containing platinum. Five assays gave a platinum content of value ranging from $180 to $1,800 per ton (with platinum at from $40 to $50 per oz.)[31]. The Abro Mine in the Timiskaming district in 1915 shipped between 5,000 and 6,000 tons of ore, containing 0·03 oz. of palladium and platinum per ton. The ore consists of pyrrhotite, chalcopyrite and pentlandite, in a gangue of altered peridotite and serpentine[7]. _Yukon Territory._—Platinum occurs associated with gold in small quantities in most of the tributaries of the Yukon River, notably at the mouth of the Hootalinqua River, and in the River Lewis[37] p. 12. NEWFOUNDLAND Chromite derived from the serpentinized area in the region of Mount Cormack, situated in the central part of the island, has been found to contain small quantities of platinum[39]. AUSTRALASIA AUSTRALIA The most important occurrences of platinum in the Commonwealth are at Fifield and at Platina, in New South Wales. The outputs of crude platinum in Australia in recent years were all exported to the United Kingdom as under: