On June 3rd, 1789, Alexander Mackenzie started on his first exploration. In his own birch-bark canoe was a crew of seven. His crew is worthy of being particularized. It consisted of four French Canadians, with the wives of two of them. These voyageurs were François Barrieau, Charles Ducette, or Cadien, Joseph Landry, or Cadien, Pierre de Lorme. To complete the number was John Steinbruck, a German. The second canoe contained the guide of the expedition, an Indian, called the "English chief," who was a great trader, and had frequented year by year the route to the English, on Hudson Bay. In his canoe were his two wives, and two young Indians. In a third canoe was trader Leroux, who was to accompany the explorer as far north as Slave Lake, and dispose of the goods he took for furs. Leroux was under orders from his chief to build a fort on Slave Lake. Starting on June 3rd, the party left the lake, finding their way down Slave River, which they already knew. Day after day they journeyed, suffered from myriads of mosquitoes, passed the steep mountain portage, and, undergoing many hardships, reached Slave Lake in nine days. Skirting the lake, they departed north by an unknown river. This was the object of Mackenzie's search. Floating down the stream, the Horn Mountains were seen, portage after portage was crossed, the mouth of the foaming Great Slave Lake River was passed, the snowy mountains came in view in the distance, and the party, undeterred, pressed forward on their voyage of discovery. The usual incidents of early travel were experienced. The accidents, though not serious, were numerous; the scenes met with were all new; the natives were surprised at the bearded stranger; the usual deception and fickleness were displayed by the Indians, only to be overcome by the firmness and tact of Mackenzie; and forty days after starting, the expedition looked out upon the floating ice of the Arctic Ocean. Mackenzie, on the morning of July 14th, erected a post on the shore, on which he engraved the latitude of the place (69 deg. 14´ N.), his own name, the number of persons in the party, and the time they remained there. His object having been thus accomplished, the important matter was to reach Lake Athabasca in the remaining days of the open season. The return journey had the usual experiences, and on August 24th they came upon Leroux on Slave Lake, where that trader had erected Fort Providence. On September 12th the expedition arrived safely at Fort Chipewyan, the time of absence having been 102 days. The story of this journey is given in a graphic and unaffected manner by Mackenzie in his work of 1801, but no mention is made of his own name being attached to the river which he had discovered.