The sun, just risen, shone coldly upon the plain, and a wind, bearing with it a hint of raw weather and whirling snow, swept down the Missouri valley from the north, marshalling in its front hosts of gabbling ducks and honking geese that were taking noisy flight from a region soon to be buried and already bleak. Yet with all the chill in the air, Ben and Betty, the mules, steamed as they toiled to and fro, and lolled out their tongues with the warmth of their work and the effort of keeping straight in the furrow; and Dallas, following in their wake with the reins about her shoulders and the horns of the plow in a steadying grasp, took off her slouch hat at the turnings to bare her damp forehead, drew the sleeve of her close-fitting jersey across her face every few moments, and, at last, to aid her in making better progress, as well as to cool her ankles, brought the bottom of her skirt through the waistband, front and back, and walked in her red flannel petticoat. As she travelled, she looked skyward occasionally with a troubled face, and, resting but seldom, urged the team forward. Clear weather and sunshine would not long continue, and the first field on the claim must be turned up and well harrowed before the opening of winter.

"Come, Ben, come," she called coaxingly to the nigh mule. "If you don't dig in now, how d' you expect to have anything to eat next winter? Betty, Betty, don't let Ben do it all; I'm talking to you, too. Come along, come along."

Ben and Betty, lean, and grey with age, bent willingly to their labour at the sound of her voice. Their harnesses creaked a monotonous complaint with their renewed efforts, the colter came whining behind them. As Dallas gently slapped the lines along their backs, now and then, to emphasise her commands, clouds of dust, which had been gathered as mud in the buffalo-wallow where they went each evening to roll, ascended and were blown away. Faithfully they pulled, not even lifting an eyelid or flapping an ear in protest when Simon, the stray yearling bull that had adopted the claim as its home and tagged Dallas everywhere, bellowed about their straining legs or loitered at their very noses and impeded their way.

Plowing was strange work to the patient mules and to the girl who was guiding them. To her, the level prairie, rank with goldenrod, pink-flowered smartweed, and purple aster, was a land of wondrous growth. For twenty years her home had been an arid mesa far to the south, where her father captained the caretakers of a spur railroad track. The most western station-house in Texas, standing amid thorny mesquite, was her birthplace and that of her sister Marylyn; the grey plateau across which the embankment led was their playground; there they grew to womanhood under the careful guidance of their frail, Northern-born mother.

And then two casualties, coming close upon each other, had suddenly changed their life. Their father was brought home one night so maimed and crushed by the wheels of a flat-car that he could never hope to take up his work again; and while he lay, bandaged and broken, fighting to keep the soul in his crippled body, their mother bravely yielded her life to a lingering illness.

Many months later, when Evan Lancaster's wounds were at last healed, Ben and Betty were unhitched from a dirt-laden scraper on the siding and put before a white-topped prairie-schooner. Then the old section-boss, with his crutches beside him and his daughters seated in the all but empty box behind, said a husky farewell to the men crowding around the wagon, and started the mules along the road that led northward beside the rails.

He gave no backward glance at the wind-battered house where he had brought an ailing bride; instead, eager to leave that plain of flying sand and scanty grasses, he drove the team rapidly forward, bound for a country where there were wells, and not water-cars, where rain fell oftener, and where food, both for man and beast, could be gotten easily from the earth. But Dallas, seated in the schooner's bed, her weeping sister held soothingly against her breast, watched, dry-eyed, as a mound by a giant mesquite faded slowly from her sight, and saw her girlhood's home give way, as a lighthouse sinks behind a speeding vessel, until only its grey-sprinkled roof showed through the scattered trees. Then, after pillowing Marylyn's head on a Navajo blanket beside the swashing water cask, she climbed forward to the driver's seat and took the reins from her father.

It was April, and when the mesa was left far to rearward, a world almost forgotten by the crippled section-boss burst in new, green loveliness upon his desert children. Towering pines and spreading oaks, lush grass strewn with blossoms, clear-running streams and gay-feathered birds replaced thirsty vegetation, salt lakes, and hovering vultures. They travelled slowly, each day bringing some fresh delight to ear and eye, until one evening in the waning Dakota summer they camped beside a great crooked split in the prairie, on a flat peninsula made by a sweeping westward bend of the muddy Missouri.

Across the river from their stopping-place, where an amber sun was going down, the horizon was near. High bluffs, like a huge wind-break, stood upon the plain, leaving at their feet only enough space for the whitewashed frame buildings of Fort Brannon. But to the east, the paralleling bluffs lay at a distance, and broke their ridge-back far up the scarlet coulée; from where, southward, stretched a wide gap—ten broad and gently undulating miles—that ended at the slough-studded base of Medicine Mountain. Evan Lancaster, as he stood bareheaded under the unclouded sky, looked about him upon acres heavy with tangled grass and weeds; and pleased with the evident richness of the untouched ground, and with the sheltered situation of the claim on the bend, swore that the white-topped schooner, with its travel-stained crew of three, had found on the yellow billows of that northern prairie its permanent moorings at last.

The felling and hewing of cottonwoods for the shack had occupied the first few weeks that followed, citizen carpenters from Brannon doing the heavy cutting and lifting. But when the little house stood, its square log room and dirt floor open to the sun, Dallas performed her part of the building, and thatched the hip-roof with coarse grass from a meadow. Next, the well was dug; and the barn built as a lean-to, for the Lancasters knew little, but had heard much, about the blizzards of the territory. Then, while the elder girl covered the slanting rafters over Ben and Betty's stall, the section-boss hauled a scanty stock of hay and provisions from Clark's, a cattle-camp and settlement to the northeast. And finally, when shack and barn were alike done, Dallas put the mules to the end of an oak beam and took up the task of plowing.