Other members of the family recalled the fact that a few days after the robbery Crawford had left in his aunt's store-room a valise, which he had subsequently called for and taken away. None of them had seen the contents of the valise, but they remembered that Crawford on the second visit had remained alone in the store-room for quite a time, perhaps twenty minutes, and after his departure they found there a rubber band like those used at the bank. The detectives also discovered that on the 15th of May, 1888, eleven days after the robbery, Crawford had rented a safety-deposit box at a bank in the Fifth Avenue Hotel building, under the name of Eugene Holt. On the 18th of May he had exchanged this box for a larger one. During the following months he made several visits to the box, but for what purpose, was not known. On presenting this accumulated evidence to the Adams Express Company, along with his own deductions, Robert Pinkerton was not long in convincing his employers that the situation required in Central America the presence of some more adroit detective than had yet been sent there. The difficulty of the case was heightened by the fact that Crawford had established himself in British Honduras, and that the extradition treaty between the United States and England did not then, as it does now, provide for the surrender of criminals guilty of such offenses as that which Crawford was believed to have committed. Crawford could be arrested, therefore, only by being gotten into another country by some clever manoeuver. The man best capable of carrying out such a manoeuver was Robert Pinkerton himself; and, accordingly, the express company, despite the very considerable expense involved, and fully aware that the result must be uncertain, authorized Mr. Pinkerton to go personally in pursuit of Crawford. Mr. Pinkerton arrived at Balize, the capital of British Honduras, on February 17, 1890, nearly two years after the date of the robbery. There he learned that Crawford's plantation was about ninety miles down the coast, a little back of Punta Gorda. Punta Gorda lies near the line separating British Honduras from Guatemala, and is not more than a hundred miles from Spanish Honduras, or Honduras proper, directly across the Gulf of Honduras. Difficulties confronted Mr. Pinkerton from the very start. People were dying about him every day of yellow fever, and when he started for Punta Gorda on a little steamer, the engineer came aboard looking as yellow as saffron, and immediately began to vomit, so that he had to be taken ashore. Then the engine broke down several times on the voyage, and the heat was insufferable. As the boat steamed slowly into Punta Gorda it passed a small steam craft loaded with bananas. "Look," said one of the passengers to Mr. Pinkerton, not aware of the nature of Mr. Pinkerton's mission, "there goes Crawford's launch now."