The two Frenchmen crossed over to the camp of these western strangers, among whom they found a chief who spoke, or professed to speak, the language of the mysterious white men, which to the two Frenchmen was unintelligible. Fortunately, he also spoke the language of the Mandans, of which the Frenchmen had learned a little during their stay, and hence were able to gather that the white men in question had beards, and that they prayed to the Master of Life in great houses, built for the purpose, holding books, the leaves of which were like husks of Indian corn, singing together and repeating _Jésus, Marie_. The chief gave many other particulars, which seemed to show that he had been in contact with Spaniards,--probably those of California; for he described their houses as standing near the great lake, of which the water rises and falls and is not fit to drink. He invited the two Frenchmen to go with him to this strange country, saying that it could be reached before winter, though a wide circuit must be made, to avoid 20 a fierce and dangerous tribe called Snake Indians (_Gens du Serpent_).[20] On hearing this story, La Vérendrye sent his eldest son, Pierre, to pursue the discovery with two men, ordering him to hire guides among the Mandans and make his way to the Western Sea. But no guides were to be found, and in the next summer the young man returned from his bootless errand.[21] Undaunted by this failure, Pierre set out again in the next spring, 1742, with his younger brother, the Chevalier de la Vérendrye. Accompanied only by two Canadians, they left Fort La Reine on the twenty-ninth of April, and following, no doubt, the route of the Assiniboin and Mouse River, reached the chief village of the Mandans in about three weeks. Here they found themselves the welcome guests of this singularly interesting tribe, ruined by the small-pox nearly half a century ago, but preserved to memory by the skilful pencil of the artist Charles Bodmer, and the brush of the painter George Catlin, both of whom saw them at a time when they were little changed in habits and manners since the visit of the brothers La Vérendrye.[22]