Pain was unfelt, mercy unknown.
In the midst of the blind _melee_, following some savage instinct, Winston clinched his fingers desperately in the Irishman's hair, and began jamming him back against the irregularities of the rock floor.
Suddenly Burke went limp, and the engineer, panting painfully, lay outstretched upon him, his whole body quivering, barely conscious that he had gained the victory.

The miner did not move, apparently he had ceased breathing, and Winston, shrinking away from contact with the motionless body, grasped a rock support and hauled himself to his feet.
The intense blackness all about dazed him; he retained no sense of direction, scarcely any memory of where he was.

His body, bruised and strained, pained him severely; his head throbbed as from fever.

Little by little the exhausted breath came back, and with it a slow realization of his situation.

Had he killed Burke?
He stared down toward the spot where he knew the body lay, but could perceive nothing.
The mystery of the dark suddenly unnerved him; he could feel his hands tremble violently as he groped cautiously along the smooth surface of the rock.