The heavy fog which hung low made it chillier.

Harry as he stood by his horse felt it cold and damp on his face, but it was a true friend for all that.

Whether Happy wishing for the fog had made it come or not they could have found no better aid.
He could not see far, but out of the vapors came the sound of men moving, because they were restless and could not help it.

He heard too the murmur of voices, and now and then the clank of a cannon, as it was advanced a little.

More time passed.