Grue set up our three tents, carried the luggage inland, and then hung about for a while until the vast shadow of a vulture swept across the trees.

I never saw such an indescribable expression on a human face as I saw on Grue's as he looked up at the huge, unclean bird. His vitreous eyes fairly glittered; the corners of his mouth quivered and grew wet; and to my astonishment he seemed to emit a low, mewing noise.

"What the devil are you doing?" I said impulsively, in my amazement and disgust.

He looked at me, his eyes still glittering, the corners of his mouth still wet; but the curious sounds had ceased.

"What?" he asked.

"Nothing. I thought you spoke." I didn't know what else to say.

He made no reply. Once, when I had partly turned my head, I was aware that he was warily turning his to look at the vulture, which had alighted heavily on the ground near the entrails and heads of the mullet, where he had cast them on the dead leaves.

I walked over to where Evelyn Grey and Kemper sat so busily conversing; and their volubility ceased as they glanced up and saw me approaching. Which phenomenon both perplexed and displeased me.

I said:

"This is the Black Bayou forest, and we have the most serious business of our lives before us. Suppose you and I start out, Kemper, and see if there are any traces of what we are after in the neighborhood of our camp."