A young Highlander--To rival Hearne--Fort Chipewyan built--French Canadian voyageurs--Trader Leroux--Perils of the route--Post erected on Arctic Coast--Return journey--Pond's miscalculations--Hudson Bay Turner--Roderick McKenzie's hospitality--Alexander Mackenzie--Astronomy and mathematics--Winters on Peace River--Terrific journey--The Pacific slope--Dangerous Indians--Pacific Ocean, 1793--North-West passage by land--Great achievement--A notable book. One of the chiefs of the fur traders seems to have had a higher ambition than simply to carry back to Grand Portage canoes overflowing with furs. Alexander Mackenzie had the restless spirit that made him a very uncertain partner in the great schemes of McTavish, Frobisher & Co., and led him to seek for glory in the task of exploration. Coming as a young Highlander to Montreal, he had early been so appreciated for his ability as to be sent by Gregory, McLeod & Co. to conduct their enterprise in Detroit. Then we have seen that, refusing to enter the McTavish Company, he had gone to Churchill River for the Gregory Company. The sudden union of all the Montreal Companies (1787) caused, as already noted, by Pond's murder of Ross, led to Alexander Mackenzie being placed in charge in that year of the department of Athabasca. The longed-for opportunity had now come to Mackenzie. He heard from the Indians and others of how Samuel Hearne, less than twenty years before, on behalf of their great rivals, the Hudson's Bay Company, had returned by way of Lake Athabasca from his discovery of the Coppermine River. He longed to reach the Arctic Sea by another river of which he had heard, and eclipse the discovery of his rival. He even had it in view to seek the Pacific Ocean, of which he was constantly hearing from the Indians, where white men wearing armour were to be met--no doubt meaning the Spaniards. Mackenzie proceeded in a very deliberate way to prepare for his long journey. Having this expedition in view, he secured the appointment of his cousin, Roderick McKenzie, to his own department. Reaching Lake Athabasca, Roderick McKenzie selected a promontory running out some three miles into the lake, and here built (1788) Fort Chipewyan, it being called from the Indians who chiefly frequented the district. It became the most important fort of the north country, being at the converging point of trade on the great watercourses of the north-west.