The United States Express Company had not relaxed its efforts against his associates after Proctor's capture. Donahue and Collins returned to Montreal, well satisfied with the work they had done, and thinking themselves safe from pursuit. But President Platt instructed Robert Pinkerton to take every measure possible against them, and it was decided that as Donahue could not be reached and punished for the robbery at Susquehanna, he should be made to suffer for the early robbery at Quebec already referred to. Donahue's complicity in this robbery was proved by the discovery of a part of the stolen goods in his hotel at Fort Erie. Through the efforts of the express company and the Pinkertons he was now arrested, and on trial was convicted and sentenced to five years' imprisonment in the Kingston penitentiary. After his conviction Donahue told the detectives that he was a fool to have had anything to do with such a dangerous project as an express robbery, but that the opportunity at Susquehanna was so tempting that he could not resist it. After his arrest the express company attached all of his property, and, although they did not succeed in getting a judgment against him, they fought him in the courts until his wife, acting for him, was obliged to mortgage all their possessions up to the last dollar, so that they never derived any substantial benefit from the stolen money. As for Collins, he remained a fugitive from justice for some time after the conviction of Proctor and Donahue. Several years later, however, seeing himself constantly threatened by the express company and the detectives, he decided to placate his enemies by stepping out from the ranks of the law-breakers and trying to lead an honest life. And he has succeeded, as the Pinkertons have reason to know; and his case goes to prove what is borne out by wide experience, that even the most desperate criminals are sometimes capable of genuine reform. The Pollock Diamond Robbery There were thirteen men in the smoker of a train on the Sioux City and Pacific Railroad when it drew out of Omaha at six o'clock on Friday evening, November 4, 1892, and started on its eastward run. Among these thirteen, sitting about half-way down the aisle, enjoying a good cigar, was Mr. W. G. Pollock of New York, a traveling salesman for W. L. Pollock & Co., of the same city, dealers in diamonds. In the inside pocket of his vest he carried fifteen thousand dollars' worth of uncut diamonds, while a leather satchel on the seat beside him contained a quantity of valuable stones in settings.