After this, Last Bull's sullenness of temper appeared to grow upon him. He was fond of drawing apart from the little herd, and taking up his solitary post on the knoll, where he would stand for an hour at a time motionless except for the switching of his long tail, and staring steadily westward as if he knew where the great past of his race had lain. In that direction a dense grove of chestnuts, maples, and oaks bounded the range, cutting off the view of the city roofs, the roar of the city traffic. Beyond the city were mountains and wide waters which he could not see; but beyond the waters and the mountains stretched the green, illimitable plains--which perhaps (who knows?) in some faint vision inherited from the ancestors whose myriads had possessed them, his sombre eyes, in some strange way, _could_ see. Among the keepers and attendants generally it was said, with anxious regret, that perhaps Last Bull was "going bad." But the head-keeper, Payne, himself a son of the plains, repudiated the idea. _He_ declared sympathetically that the great bull was merely homesick, pining for the wind-swept levels of the open country (God's country, Payne called it!) which his imprisoned hoofs had never trodden. Be this as it may, the fact could not be gainsaid that Last Bull was growing more and more morose. The spectators, strolling along the wide walk which skirted the front of his range, seemed to irritate him, and sometimes, when a group had gathered to admire him, he would turn his low-hung head and answer their staring eyes with a kind of heavy fury, as if he burned to break forth upon them and seek vengeance for incalculable wrongs. This smouldering indignation against humanity extended equally, if not more violently, to all creatures who appeared to him as servants or allies of humanity. The dogs whom he sometimes saw passing, held in leash by their masters or mistresses, made him paw the earth scornfully if he happened to be near the fence. The patient horses who pulled the road-roller or the noisy lawn-mower made his eyes redden savagely. And he hated with peculiar zest the roguish little trick elephant, Bong, who would sometimes, his inquisitive trunk swinging from side to side, go lurching lazily by with a load of squealing children on his back. Bong, who was a favored character, amiable and trustworthy, was allowed the freedom of the Park in the early morning, before visitors began to arrive who might be alarmed at seeing an elephant at large. He was addicted to minding his own business, and never paid the slightest attention to any occupants of cage or enclosure. He was quite unaware of the hostility which he had aroused in the perverse and brooding heart of Last Bull.