YUKON TERRITORY, the most westerly of the northern territories of Canada, bounded S. by British Columbia, W. by Alaska, N. by the Arctic Ocean and E. by the watershed of Mackenzie river. It has an area of 207,076 sq. m. The territory is chiefly drained by the Yukon river and its tributaries, though at the S.E. corner the headwaters of the Liard river, flowing into the Mackenzie, occupy a part of its area. The margins of the territory are mountainous, including part of the St Elias 'William Healey Dall (1845- ), American naturalist, was born in Boston, Massachusetts, served with the United States Coast Survey of Alaska from 1871 to 1884, became honorary curator of the United States National Museum in i88o,and in 1893 was appointed professor of invertebrate palaeontology at the Wagner Institute of Science, Philadelphia. He was palaeontologist to the United States Geological Survey in 1884-ioxx). The white mountain sheep, or Dall's sheep (Ovis dallf), discovered in 1884, was named in his honour.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)