Bears usually fight "on the square," openly and above-board, rarely committing foul murder. If one bear hates another, he attacks at the very first opportunity, He does not cunningly wait to catch the offender at a disadvantage and beyond the possibility of rescue. Sometimes a captive bear kills a cage-mate or mauls a keeper, but not by the sneaking methods of the human assassin who shoots in the dark and runs away. I do not count the bear as a common criminal, even though at rare intervals he kills a cage-mate smaller and weaker than himself. One killing of that kind, done by Cinnamon Jim to a small black bear that had annoyed him beyond all endurance, was inflicted as a legitimate punishment, and was so recorded. The attack of two large bears, a Syrian and a sloth bear, upon a small Japanese black bear, in which the big pair deliberately attempted to disembowel the small victim, biting him only in the abdomen, always has been a puzzle to me. I cannot fathom the idea which possessed those two ursine minds; but I have no doubt that some of the book-making men who read the minds of wild animals as if they were open books could tell me all about it. On the ice-pack in front of his stone hut at the north end of the Franz Josef Archipelago Nansen saw an occurrence that was plain murder. A large male polar bear feeding upon a dead walrus was approached across the ice-pack by two polar-bear cubs. The gorging male immediately stopped feeding and rushed toward the small intruders. They turned and fled wildly; but the villain pursued them, far out upon the ice. He overtook them, killed both, and then serenely returned to his solitary feast. In February, 1907, a tragedy occurred in the Zoological Park which was a close parallel of the Lopez murder. It was a case in which my only crumb of satisfaction was in my ability to say, "I told you so,"--than which no consolation can be more barren. For seven years there had lived together in the great polar bears' den of the Zoological Park two full-grown, very large and fine polar bears. They came from William Hagenbeck's great group, and both were males. Their rough-and-tumble wrestling, both in the swimming pool and out of it, was a sight of almost perennial interest; and while their biting and boxing was of the roughest character, and frequently drew blood, they never got angry, and never had a real fight. In the autumn of 1906 one of the animals sickened and died, and presently the impression prevailed that the survivor was lonesome. The desirability of introducing a female companion was spoken of, but I was afraid to try the experiment.