Sir ALEXANDER MACKENZIE 26 eagerly tried to dissuade from carrying out his intention of leaving the North-West. From Pond he picked up much information about the geography of the district, with its great river appearing from the west no one knew whence, and flowing to the north no one knew whither. Before the winter was over he had decided to try to solve its mysteries himself tf he got the chance. He went down with the furs in the sum- mer of 1788 to Rainy Lake; the men of the Athabaska department went no further be- cause their journey took so long that they could not go as far as Grand Portage and back in a single season. Here he persuaded his cousin to return with him to Athabaska, but only after revealing his plans of exploration, and representing that he should have to abandon them if Roderick would not take charge of the district during his absence. He also seems to have secured his partners’ con- sent for the enterprise. He decided on his return to move his headquarters down stream from Pond’s fort to Lake Athabaska itself. Roderick went forward to choose the site.