They may be receding

Usage examples of hairlines.

Get it where the hairlines cross, and for the sake of Sol, keep it there.

Then it was, that strange things happened: flashlights brought from under a parka died out inside a minute: rubber became hard as wood and cracked and fractured like wood: breath was an opaque white cloud that shrouded the heads of every person who ventured outside the tractor body: the ice-cap froze to such an unprecedented degree of hardness that the tractor treads spun and slipped on flat surfaces, the crimp marks no more than half-seen hairlines on the ground: the dogs, who could with impunity stand up to howling blizzards that would kill any man, whined and wailed in their utter misery in that appalling cold: and, now and again, like some far-off intimation of doom and the end of the world, a dull rumbling sound would come echoing across the ice-cap and the ground shake beneath the treads of the tractor as some great areas of snow and ice contracted still farther under the iron hand of that glacial cold.

The entire centre of the glacier was a devil's playground of crevasses ranging from hairlines to chasms twenty and more feet in width, transverse, longitudinal and diagonal, and as far as I could see they extended clear to the other wall.

There were hundreds of them, possibly thousands, within the compound, and all of them had the same receding hairlines, lean hard bodies, prominent chins, small sunken eyes.

He’d seen a few humans with hairlines nearly as low, but he’d never seen one who sported hair growing so obviously upwards.