Wuar Lies Beyonp tue Mountains? 4I the north end of the Rockies to the Pacific, and is identical with the great river Cook had discovered in 1778. Further: “Another man by the name of McKenzie was left by Pond at Slave Lake with orders to go down the River, and from thence to Unalaska, and so to Kam- skatsha, and thence to England through Russia, etc. If he meets with no accident, you may have him with you next year.” Pond was a braggart and a liar. His account of the river is entirely imaginary. Mackenzie certainly took no orders from Pond, and had no such extended design as is here ascribed to him. He was far better equipped than Pond as an explorer, and he was probably able, before he set out, to correct some of Pond’s more flagrant errors. But Pond and Mackenzie had spent the winter of 1787-8 together in Athabaska; during that winter Mackenzie’s ambitions as an explorer appear to have begun; and he undoubtedly started downstream in 1789 in the hope and belief that he should reach the Pacific in accordance with Pond’s theory. In one pas- sage he writes: “It was in the summer of