=The Cordillera Region of Canada.=--A length of nearly thirteen hundred miles of the great mountainous or Cordillera region of the Pacific coast is included in the western part of Canada. Most of this, Mr. George M. Dawson says, in a paper on the Physical Geography and Geology of Canada, is embraced in the province of British Columbia, where it is about four hundred miles wide between the Great Plains and the Pacific Ocean. To the north it is included in the Yukon district of the Northwest Territory till it reaches, in a less elevated and more widely spread form, the shores of the Arctic Ocean on one side and on the other passes across the one hundred and forty-first meridian of west longitude into Alaska. The orographic features of this region are very complicated in detail. No existing map yet properly represents even the principal physical outlines, and the impression gained by the traveler or explorer may well be one of confusion. There are, however, the two dominant mountain systems of the Rocky Mountains and the Coast Range. As a whole, the area of the Cordillera in Canada may be described as forest-clad, but the growth of trees is more luxuriant on the western slopes of each of the dominant mountain ranges, in correspondence with the greater precipitation occurring on these slopes. This is particularly the case in the coast region and on the seaward side of the Coast Range, where magnificent and dense forests of coniferous trees occupy almost the whole available surface. The interior plateau, however, constitutes the southern part of a notably dry belt, and includes wide stretches of open grass-covered hills and valleys, forming excellent cattle ranges. Farther north, along the same belt, similar open country appears intermittently, but the forest invades the greater part of the region. It is only toward the arctic coast, in relatively very high latitude, that the barren arctic tundra country begins, which, sweeping in wider development to the westward, occupies most of the interior of Alaska. With certain exceptions the farming land of British Columbia is confined to the valleys and tracts below three thousand feet, by reason of the summer frosts occurring at greater heights. There is, however, a considerable area of such land in the aggregate, with a soil generally of great fertility. In the southern valleys of the interior irrigation is necessary for the growth of crops.