She saw another black, scudding mass of clouds bearing down with its trailing sheets of rain, and this one appeared streaked with white. Snow! The wind was now piercingly cold. Helen's body kept warm, but her extremities and ears began to suffer exceedingly. She gazed ahead grimly. There was no help; she had to go on. Dale and Roy were hunched down in their saddles, probably wet through, for they wore no rain-proof coats. Bo kept close behind them, and plain it was that she felt the cold. This second storm was not so bad as the first, because there was less rain. Still, the icy keenness of the wind bit into the marrow. It lasted for an hour, during which the horses trotted on, trotted on. Again the gray torrent roared away, the fine mist blew, the clouds lifted and separated, and, closing again, darkened for another onslaught. This one brought sleet. The driving pellets stung Helen's neck and cheeks, and for a while they fell so thick and so hard upon her back that she was afraid she could not hold up under them. The bare places on the ground showed a sparkling coverlet of marbles of ice. Thus, storm after storm rolled over Helen's head. Her feet grew numb and ceased to hurt. But her fingers, because of her ceaseless efforts to keep up the circulation, retained the stinging pain. And now the wind pierced right through her. She marveled at her endurance, and there were many times that she believed she could not ride farther. Yet she kept on. All the winters she had ever lived had not brought such a day as this. Hard and cold, wet and windy, at an increasing elevation--that was the explanation. The air did not have sufficient oxygen for her blood. Still, during all those interminable hours, Helen watched where she was traveling, and if she ever returned over that trail she would recognize it. The afternoon appeared far advanced when Dale and Roy led down into an immense basin where a reedy lake spread over the flats. They rode along its margin, splashing up to the knees of the horses. Cranes and herons flew on with lumbering motion; flocks of ducks winged swift flight from one side to the other. Beyond this depression the land sloped rather abruptly; outcroppings of rock circled along the edge of the highest ground, and again a dark fringe of trees appeared. How many miles! wondered Helen. They seemed as many and as long as the hours. But at last, just as another hard rain came, the pines were reached. They proved to be widely scattered and afforded little protection from the storm. Helen sat her saddle, a dead weight. Whenever Ranger quickened his gait or crossed a ditch she held on to the pommel to keep from falling off. Her mind harbored only sensations of misery, and a persistent thought--why did she ever leave home for the West? Her solicitude for Bo had been forgotten. Nevertheless, any marked change in the topography of the country was registered, perhaps photographed on her memory by the torturing vividness of her experience.