it easy? and shall we succeed?'

For Dave Brainerd and I, both professional detectives, 'man-hunters,' if you will, were sent to this White City on a twofold mission.

It was not our first work together, and at first we did not enter into it with enthusiasm.

'Masters, Brainerd,' our chief said to us one morning, 'they are going to want a lot of good men at that World's Fair; I think I'd better put you both on the list.' And this was all that was said then, but when we were out of his presence Dave exploded.

'Wants to send us to watch little boys, look after ladies' kerchiefs, and hunt up lost babies, does he?' he began, in a fume. 'It's not meself that'll do it; d'ye hear, Masters? I'll go like the biggest gentleman of all, or like the sleuth I am, but no child-rescuing and kid-copping for me! Let his honour give us,' with a theatrical gesture, 'a foeman worthy of our steel.'

Nothing came of this whimsical tirade, and a week had passed before the chief spoke again upon the subject. Then we were both called into his private office, and he said:

'Boys, we have just found out to a certainty that Greenback Bob and his pals are going to operate at the World's Fair. I've already promised them more good men than I like to spare, but we can't let Bob and his crowd slip. I did not really mean to send you, either of you, with the others; but this is something worth while.'

'I should say!' broke in Dave, who was no respecter of persons, unless perhaps it might have been of Dave Brainerd. 'Do you mean to tell us, Cap, that the dandy Frenchman is in it?'

'He is very much in it. He crossed from Calais on the last boat in hot haste, and I'm much mistaken if the whole gang is not already on its way to the White City, though he only reached this side the night before last; and there's another party who may give us some trouble. We don't know him, but he is said to be an all-round bad one, just come over from Calais with this Delbras. I wish I could give you even a description of him.'

Greenback Bob was a counterfeiter, or so it was believed, for he was so bold, so shrewd, and so generally successful, that no one as yet had been able to entangle him in the meshes of the law; though samples of what was believed to be his handiwork had been passed from hand to hand, and travelled far before they had been challenged, and their journeys summarily ended in the cabinet of our chief. Bob was known as a gambler, too, and more than once had he been watched and shadowed because of some ill deed connected with his name; we had seen his face, and his picture adorned the rogues' gallery. Delbras, however, was likely to give us some trouble; we had seen him, it is true, but it was only a fleeting glimpse, with the possibility that he was at the moment cleverly disguised.

Of Delbras we knew, first, that he was and had been for years the occasional partner or confederate of the counterfeiter, and presumably a counterfeiter also; next, that he was set down in the records of the London police as 'dangerous'; and last, that he had crossed the ocean, leaving Paris, which had grown 'too hot to hold him,' and was avowedly en route for the World's Fair, it was thought upon mischief intent.

This last item came to our chief direct from the French police, together with the information that two or three diamond robberies which had occurred in the French capital during the previous winter were laid at his door, although it had been thus far impossible to bring the thefts home to him.

Concerning Greenback Bob—the fellow was known to us by no other name—we felt quite sanguine; we had seen him, we had his photograph and his full description according to the Bertillon system, and, once seen, he would hardly be lost to sight again, or so we flattered ourselves. Delbras we must identify through Bob, or as we best could; and the third member of the 'gang'—well, a great deal must be left to chance, as usual.

This much we knew of Delbras: he was 'handsome, educated, familiar with the ways of good society, and not an easy bird to catch.' This from the French police commissaire.

'A pinchbeck gentleman, eh!' had been Dave Brainerd's scornful comment upon hearing this. 'The worst set to deal with; I'd rather tackle a straight out-and-outer any day.'

Recalling this speech of Dave's brought my thoughts back to the old question, 'Where was he?' And then the dialogue at my elbow aroused my flagging attention, and brought it back to my rustic acquaintance and the smug personage at his side.

'Wal, now, I hadn't thought of that, but now't you mention it, 'twas a good idee; and they wouldn't change it to the eatin'-house?'

'Not there.' The smug man's tones were low and cautious. 'Pardon me, but—don't speak too loud, my friend—the mere mention of money is likely to attract some sharper to you. No, they refused me there. You see, I anticipated some difficulty inside the gates, so I had tried just before entering; but the man at the desk refused, and very curtly, too. I wanted to enter at once in order to meet half a dozen young men from my town who are sort of under my care.'

'Orphans?'

'Not quite. They belong to my Bible class, you see,' Mr. Smug explained modestly; 'and I had promised to be at the Terminal Station in case they arrived by the early train.'

'Whar from, d'ye say?' with awakening interest. 'I'm a Sunday-school teacher myself, when I'm to hum.'

'Indeed! It's a very interesting and useful work—labouring for souls. Ah, they come from Marshall, in Iowa.'

'Don't say! Why, I——'

'But they did not arrive; their train had been delayed. But, as I was about to tell you, if I had not chanced to have in my possession a roll of bills, put in my care by the father of one of the younger lads, I might have been kept outside for some time longer.'

'How's that?'

I had been a little puzzled at this dialogue, and was losing my interest somewhat when it reached this point, and I pricked up my ears anew, while I continued to copy inscriptions and jot down memoranda.

'It seems almost like confessing to a breach of trust; but there seemed no other way, and so, stepping to one side, I took out the package of money belonging to my young friend. I had counted it in his father's presence, and knew that it contained on the very outside of the roll a two dollar bill. I took this and procured my ticket. Of course I shall explain to him and replace it at once.'

'In course! but—you was a-saying——'

'I began to tell you how I learned where to go to get money changed. I had entered, you must know, at the Cottage Grove gate opening upon Midway, and walking toward the east I soon met a guard.' He had drawn a cigar from his pocket while speaking, and he now turned toward me. I had lighted a weed upon seating myself near them, and as he uttered a polite 'Pardon me, sir,' I smoked calmly on, while I copied upon a fresh page of my notebook the legend, 'Jenner discovered the principle of vaccination in 1796,' putting an elaborate final flourish after the date.

'Sir! Your pardon; may I trouble you for a light?' A light touch of his hand accompanied the words, and I turned slowly, favoured him with a look of as well-managed stupidity and inquiry as I could muster, drew from my pocket a little ear-tube, and, adjusting it to my right ear, said, 'Hey?'

Again the fellow made known his want, and then, apparently convinced that I had not been a listener, he resumed, somewhat hurriedly, I thought:

'As I was saying, I met a guard and asked him where to go to get a bill exchanged; he mentioned one or two places a long way off, and then, happening to think of the arrangement made for the accommodation of foreigners, he courteously directed me to one of the agents quite near at