Leaving Philadelphia in April, the company passed overland to Prairie du Chien on the Mississippi, ascended this river, and going up its branch, the Minnesota, reached the town of Mendota in the month of July. A well-known French half-breed, Joseph Renville, acted as guide, and several others joined the party at this point. After journeying up the Minnesota River, partly by canoe, and partly by the use of horses, they reached in thirteen days Big Stone Lake, which is considered to be the source of the river. Following up the bed of a dried-up stream for three miles, they found Lake Traverse, the source of the Red River, and reached Pembina Village, a collection of fifty or sixty log huts inhabited by half-breeds, numbering about three hundred and fifty. We have already seen how the North-West and Hudson's Bay Companies had posts at this place, and that it had been visited regularly by the Selkirk settlers as being in proximity to the open plains where buffalo could be obtained. On the day after Long's arrival he saw the return of the buffalo hunters from the chase. The procession consisted of one hundred and fifteen carts, each loaded with about eight hundred pounds of the pressed buffalo meat. There were three hundred persons, including the women. The number of horses was about two hundred. Twenty hunters, mounted on their best steeds, rode abreast, giving a salute as they passed the encampment of the expedition. One of Major Long's objects in making his Journey was to ascertain the point where the parallel of 49 deg. N. crossed the Red River. For four days observations were taken and a flag-staff planted a short distance south of the 49th parallel. The space to the boundary line was measured off, and an oak post fixed on it, having on the north side the letters G. B., and on the south side U. S. This post was kept up and was seen by the writer in 1871. In 1872, a joint expedition of British and American engineers took observations and found Long's point virtually correct. They surveyed the line of 49 deg. eastward to Lake of the Woods and westward to the Rocky Mountains. Posts were erected at short distances along the boundary line, many of them of iron, with the words on them, "Convention of London, 1818." His work at Pembina having been accomplished, Major Long gave up, on account of the low country to be passed, the thought of following the boundary line eastward to the Lake of the Woods. He sold his horses and took canoes down the river to the Hudson's Bay Company at Fort Garry, where he was much interested in the northern civilization as well as in the settlers who had Fort Douglas as their centre.