Mr. Ogilvie, in his report, points out:—“Excepting a short distance at the head of Mackenzie river, where it is doubtful, it is certain that vessels drawing at least seven or eight feet of water can navigate from the delta of the Mackenzie to the rapids on Great Slave river, a distance of one thousand two hundred and seventy-three miles. If Mackenzie delta also allows that draught, we have about one thousand three hundred and forty miles of navigable water from the rapids to Arctic ocean.” “Wherever possible the width of the river was determined by triangulation. Between the narrows and Fort Good Hope it is never less than a mile wide and is often more than two, even reaching three miles at some points. “Since I followed the shore, I cannot speak of the depth of water from personal observation. Captain Bell, of the Hudson’s Bay Company’s steamer ‘Wrigley,’ informed me that the shallowest water found by him in any part of the river, in what he considered the channel, was eleven feet. But as, when I saw him, he had made only two trips on the lower river, he could not speak very definitely as to its depth. Sir Alexander Mackenzie, who discovered the river and descended to its mouth in July, 1789, had a lead line with which to make soundings; but in the swift current a short distance above Fort Simpson his lead caught in the bottom, the line broke and the lead was lost. I have the depths according to him, and will give them in their proper place. One would expect, in such an expanse of water as this, to find some of it shallow, but it appears from all the evidence I could gather that vessels drawing from eight to ten feet of water would find no difficulty in navigation as far as Great Slave lake. Although the river is reported to be shallow where it leaves this lake, doubtless a channel could be found affording the draught above mentioned. “In the fall of 1887, a whale made its way up the river to the Ramparts, remaining there the whole season, and before the river froze over it was often seen blowing. At first the Indians were afraid, but they soon became accustomed to the sight, and shot at the whale whenever it approached the shore. In the spring its dead body was beached by the ice on the west shore seven or eight miles below Fort Good Hope, and the Indians used part of it for dog meat. I enquired its dimensions of several who had seen it. They described it as being about twice as long as one of their canoes and thicker through than their own height. This would mean a length of from twenty-five to twenty-eight feet. I have often heard it stated that all the channels of Mackenzie delta are shallow, but the presence of this whale assures us that one of them at least is over six feet deep.” OVER THREE THOUSAND MILES OF WATERWAY.