However hard he fought to stay awake, his consciousness slipped away.

Guess you were right, sweetheart, he thought, as consciousness slipped from his grasp.

The weapons officer struggled desperately not to let consciousness slip away.

Though consciousness slipped a bit, she held the screens tight, recovered.

After a bit my consciousness slipped away and there was a long time when I was unaware of anything.

The words came faintly, then she was gone, the eyelids closing down, consciousness slipping away.

He concentrated-but instead felt his consciousness slipping away again.

But then consciousness was slipping away even as his captor charged into the fray again, and he knew no more.

I let consciousness slip away, let the fire in my hand take my whole body.

And then he felt a blow on his head which further stunned him; his consciousness was slipping away.