The container seemed to be filled from top to bottom with a thick grayish-green substance.

It was like he had to push through some thick substance each time he moved.

Their bodies would make a sound like boiling water while giving off a thick white steam-like substance.

The thick brown substance laid the sea flat as a newspaper.

The fire came from a thick, dark substance plastered over the stones.

All the others, how- ever, were trapped, trying to fight their way free of the thick, sticky substance.

One side of his face is wet with a thick, sticky substance.

The clear cups filled not with water but with a thick, gray substance.

There was more glass, or some other thicker substance, behind the jagged hole she had made.

I turned my head slowly to the left: again there was the wall and farther beyond another pool, its thick substance churning.