Peetn drew his cloak more firmly about his furry shoulders as the sun began to sink through the Martian sky and the wind throbbed a deeper note in the gathering darkness. He stood gazing silently as the fading light painted the sky in somber colors, preparing to disappear for another night of screaming wind and penetrating sub-zero cold. He watched until the twilight deepened to purple and then stalked laboriously into the wind, up the gentle slope toward the little hollow where he went each nig