Turnor's report filled the directors with a desire to dispute the trade of Lake Athabaska with the men of the North West Company; and they bombarded Colen with instructions to send Ross and Thompson to that region. But to Colen's mind there was a more pressing necessity nearer home. The North-Westers had entered the rocky belt to the south-west of York, and had monopolized trade throughout the irregular series of lakes and rivers which form the tributaries of the Nelson and lower Churchill, thus challenging the "English" on their home front itself. Accordingly Colen ignored the instructions from London, and despatched Ross and Thompson into this "muskrat country," as it was called, with orders to build posts at strategic points and restore the trade of the Company.
On the 5th of September, 1792, Thompson set forth with two canoes on his first independent command. Rounding the point from York factory, the canoes swung into the broad channel of the Nelson river. By the end of the month they were well above Split lake, Thompson making a survey as they moved along. At this point one of the canoes turned aside to ascend Grass river, while Thompson with the other continued along the main stream until he reached the upper end of Sipiwisk lake. Here in a little cove formed by two projecting points of rock, with the dark spruce forest at his back and a view to the south west over the island-studded lake, he built his first trading post, and settled down to face the winter in a country almost devoid of fish and game.
His heart, however, was set on exploration. From the Indians he learned that, besides the well-known route which had been followed by Turnor to Lake Athabaska, there existed another, north from the Churchill river to Reindeer lake, and thence westward by way of the Black river to the east end of Lake Athabaska. This route he made up his mind to explore.
Accordingly, when the ice had cleared from the rivers, he set forth alone without any help or encouragement from headquarters. Descending to the lower end of Sipiwisk lake, he turned to the left and passed by a series of portages through Wintering, Red Paint and Burntwood lakes to the Missinippi or Churchill river, up which he paddled for a distance of thirty-three miles. But the Indian guides whom he had expected to meet failed to put in an appearance, and he was forced to turn back. He therefore descended through Burntwood lake and the Nelson river to York factory.
Colen had given the English directors to understand that he planned to send Ross and Thompson to the Athabaska country; and with the arrival of the annual ship in the autumn of '93, they wrote that they expected much good to follow from the projected expedition, and that they wished William Cook, who had accompanied David into the Muskrat country the previous autumn, to join with the others in the invasion of the far north. But Cook was not recalled from his post on Split lake, and Ross and Thompson were sent up the Saskatchewan to Cumberland House. Thence Thompson was despatched, not to Lake Athabaska, as he had expected, but westward along the river to a new post called Buckingham House, from which he rode still further west to the Beaver hills near the future site of Fort Augustus (Edmonton). Returning, he surveyed the Saskatchewan east from Buckingham House to the Forks, and from the Forks he resurveyed the rest of the river. From Cumberland House, he explored a new route through Goose, Reed, and Burntwood lakes to the Nelson, and thus opened up a direct line of communication between the dépôt at Cumberland House and York factory, much superior to the old course by way of Lake Winnipeg and the Hayes river.
Thompson's reappearance at York without having been to the Athabaska country made it necessary for Colen to do no little explaining to the impatient London directors. In a long letter to them, he hinted that it was Tomison who was responsible for the fiasco. Tomison, he said, had refused to pass his word for the advance of wages promised by the Council to those who would volunteer to accompany the expedition. Ross, he declared, was utterly disgusted with the repeated disappointments, and would have returned at once to England, had not Thompson prevailed upon him to make one last trial, this time by way of Reindeer lake. Thompson and Ross, he added, were being fitted out with canoes and supplies at York, and would be sent up the Nelson river track. The directors were deceived, and swallowed their disappointment, hoping to hear that the difficulties which stood in the way of the Athabaska expedition had been successfully overcome.
But, even now, Thompson was sent, not to the North, but back once more to the Muskrat country, this time to Reed lake. Here, in a district comparatively rich in fish, game, and furs, he built a house, and spent one of the coldest winters in the history of the Hudson Bay. While hunting and trading, he also prepared for the directors of the Company, the maps and surveys of the country which he had already traversed. In July of the following year, 1795, he paddled down the river on what was to be his last visit to York.
On this occasion Colen was absent on a trip to England, but the factory was seething with discontent. Thompson found the staff impatiently waiting, in order that he, the youngest and bravest among them, might take the lead in drawing up a statement of the grievances which they suffered under Colen's rule. This office he accepted, although with some hesitation on account of the absence of the governor. Assisted by his friend the surgeon, he drew up a statement which Colen declared seriously prejudiced him in the eyes of the directors; although, according to Thompson, not one half of the evils were even mentioned of which the staff had cause to complain. Thompson was not ashamed of the part he had played in this mutinous outbreak. As soon as he had left the service, he took the opportunity of explaining to his old chief that he was the author of the protest which had so much displeased him. "Many of us," his letter concluded, "acknowledge with readiness that you have some good qualities, and I once had the greatest respect for you; I have some yet, but——it is not my wish to say those things which I know you do not wish to hear. How is it, Sir, that everyone who has once wished you well should turn to be indifferent to you, and even some to hate you, although they are constant in their other friendships?—there must be a defect somewhere. The fact is, that from your peculiar manner of conduct, you are also one of those unfortunate men who will have many an acquaintance, but never a real friend."
Thompson's final break with Colen did not, however, occur until two years later. He turned in his furs, and without waiting, except to secure supplies for the coming winter, went back to his duties in the Muskrat country. This time he built a house far to the north on Duck Portage, the link connecting Burntwood lake with the Churchill river. When spring opened, instead of returning to York, he made ready for his dash to Lake Athabaska.
Formal permission had reached him from Colen, sanctioning his venture into the unknown wilds. This, however, meant nothing, because it was not accompanied by help of any kind. At that moment, indeed, the Company was seriously crippled for lack of men to keep up the few inland trading posts that then existed, for the war which was raging between England and France had drained the Orkney islands of all men who were fit for service in the army and navy. The few miserable dwarfs who could be obtained for the fur trade excited the contempt of even the Indians.