By nine o’clock the sun stood high in the sky.  The heat was intense; the atmosphere was thick and heavy with it.  McTeague gasped for breath and wiped the beads of perspiration from his forehead, his cheeks, and his neck.  Every inch and pore of his skin was tingling and pricking under the merciless lash of the sun’s rays.

“If it gets much hotter,” he muttered, with a long breath, “if it gets much hotter, I—­I don’ know—­” He wagged his head and wiped the sweat from his eyelids, where it was running like tears.

The sun rose higher; hour by hour, as the dentist tramped steadily on, the heat increased.  The baked dry sand crackled into innumerable tiny flakes under his feet.  The twigs of the sage-brush snapped like brittle pipestems as he pushed through them.  It grew hotter.  At eleven the earth was like the surface of a furnace; the air, as McTeague breathed it in, was hot to his lips and the roof of his mouth.  The sun was a disk of molten brass swimming in the burnt-out blue of the sky.  McTeague stripped off his woollen shirt, and even unbuttoned his flannel undershirt, tying a handkerchief loosely about his neck.

“Lord!” he exclaimed.  “I never knew it could get as hot as this.”

The heat grew steadily fiercer; all distant objects were visibly shimmering and palpitating under it.  At noon a mirage appeared on the hills to the northwest.  McTeague halted the mule, and drank from the tepid water in the canteen, dampening the sack around the canary’s cage.  As soon as he ceased his tramp and the noise of his crunching, grinding footsteps died away, the silence, vast, illimitable, enfolded him like an immeasurable tide.  From all that gigantic landscape, that colossal reach of baking sand, there arose not a single sound.  Not a twig rattled, not an insect hummed, not a bird or beast invaded that huge solitude with call or cry.  Everything as far as the eye could reach, to north, to south, to east, and west, lay inert, absolutely quiet and moveless under the remorseless scourge of the noon sun.  The very shadows shrank away, hiding under sage-bushes, retreating to the farthest nooks and crevices in the canyons of the hills.  All the world was one gigantic blinding glare, silent, motionless.  “If it gets much hotter,” murmured the dentist again, moving his head from side to side, “if it gets much hotter, I don’ know what I’ll do.”

Steadily the heat increased.  At three o’clock it was even more terrible than it had been at noon.

“Ain’t it ever going to let up?” groaned the dentist, rolling his eyes at the sky of hot blue brass.  Then, as he spoke, the stillness was abruptly stabbed through and through by a shrill sound that seemed to come from all sides at once.  It ceased; then, as McTeague took another forward step, began again with the suddenness of a blow, shriller, nearer at hand, a hideous, prolonged note that brought both man and mule to an instant halt.