In the rear of our tent, a squaw, who had become possessed of a wooden small-toothed comb, was occupied {45} in removing from her head a population as numerous, as the individuals composing it were robust and well fed. She had placed a skin upon her lap to receive the victims as they fell; and a female companion who sat at her feet alternately craunched the oily vermin between her teeth, and conversed with the most rapid and pleasant loquacity, as she picked them up from the skin before her. Our attention was now arrested by a phenomenon which soon relieved us from the crowd that pressed upon us. A heavy and extensive cloud of dust was observed in the north, obscuring the horizon, and bounding the range of vision in that direction. It moved rapidly towards us. An animated scene ensued; the Indians fording the river with as much rapidity of movement as they could exert, towards their encampment, horse and foot, the water foaming before them. It soon became obvious that the dust ascended into the atmosphere under the influence of a violent current of air; we therefore employed a few moments of interval in strengthening our feeble tenements to resist the influence of the approaching tempest. Within, they were now so nearly filled with our red brethren, that we wedged ourselves in with some difficulty amongst them. It soon became necessary to exert our strength in holding down our tents and supporting the poles, which bowed and shook violently under the pressure of the blast. Thunder, lightning, rain, and hail succeeded. During this play of the elements, our guests sat in stillness, scarcely articulating a word during the prevalence of the electrical explosions. Our tents were much admired, and previously to the fall of rain (which exposed their imperfection, in admitting the water, modified into the form of a mist) one of the natives offered to exchange an excellent mule for that in which he was sitting; and as the commonalty could not distinguish us in their minds {46} from traders, another offered two mules (valued equal to four horses) for a double-barrelled gun; and a third would willingly have bartered a very good horse for an old and almost worn-out camp-kettle, which we could by no means part with, though much in want of horses.