Resisting any proffers of assistance, he began to fill in the grave, turning his back upon the crowd, that after a few moments' hesitation gradually withdrew. As they crossed the little ridge that hid Sandy Bar from view, some, looking back, thought they could see Tennessee's Partner, his work done, sitting upon the grave, his shovel between his knees, and his face buried in bandanna handkerchief. But it was argued by others that you couldn't tell his face from his handkerchief at that distance; and this point remained undecided. In at least one hundred words, explain how Harte maintains a humorous tone even in this rather serious scene.