made his escape when an explosion took place resembling that of thunder. During our stay in that quarter I head it every day. From here, probably the West Thumb thermal area, “by a circutous rout to the Nourth west” and after some more bloody encounters with the Blackfeet, the trappers moved toward the Bear Lake rendezvous. In 1828 Potts left the hostile mountains and embarked from New Orleans on a cattle ship, which sank with all hands in the Gulf of Mexico. [Illustration: Daniel T. Potts at the Bear Lake rendezvous of 1827.] At the 1827 rendezvous at Bear Lake Jedediah Smith appeared like a ghost out of the Great Salt desert, reporting that the Spanish Governor of California had expelled him from that province. He arranged with his partners, Jackson and Sublette, to meet two years hence “at the head of Snake River.” Then, after a rest of only ten days, he summoned volunteers and again set his face toward the Pacific Ocean. In the winter of 1827-28, while Sublette attended to the business of getting supplies from St. Louis, Jackson sent fur brigades north from Bear Lake to the Snake River and its tributaries, where they came in frequent contact with the Hudson’s Bay Company trappers under Ogden. In 1828 the rendezvous was again Great Salt Lake, and again the trappers dispersed to hunting grounds on the Bear, the Snake, and the Green. [Illustration: Keelboat up the Missouri.] In March 1829 William Sublette left St. Louis for the mountains with a heavily laden pack train and 60 men, including a novice of 19 named Joseph L. Meek, whose life story, as told to Mrs. F. F. Victor, is a prime source of information. After the general rendezvous, which that year was held in July on the Popo Agie River northeast of South Pass, Captain Sublette sent a brigade under his brother, Milton Sublette, to the Bighorn Basin, then set out with the main party, including Meek, Bridger, and Fitzpatrick, for the upper Snake River Valley at the foot of the Tetons, the point of reunion with his partners which had been agreed upon two years previously. The episode which followed, one of the treasured traditions of the Western fur trade, is described in Mrs. Victor’s River of the West: Sublette led his company up the valley of the Wind River, across the mountains, and on to the very headwaters of the Lewis or Snake River. Here he fell in with Jackson, in the valley of Lewis Lake, called Jackson’s Hole, and remained on the borders of this lake for some time, waiting for Smith, whose non-appearance began to create a good deal of uneasiness. At length runners were dispatched in all directions looking for the lost Booshway. The detachment to which Meek was assigned had the pleasure and honor of discovering the hiding place of the missing partner, which was in Pierre’s Hole, a mountain valley about thirty miles long and of half that width, which subsequently was much frequented by the camps of the various fur companies.