We spent three of the long morning hours in viewing, first the case where the real gems had been, and next the shams that had taken their place; then the surroundings, and last, and one by one, the people engaged about the Lausch pavilion. They were all Viennese, speaking the English language fairly well, far better than Mr. Lausch himself; and after we had questioned them closely and carefully, we closeted ourselves together and discussed the few 'points' so far gathered, if points, upon investigation, they proved to be.

'Carl,' chuckled my friend when we were at last alone, 'one of our missions here at the great Columbian Exposition was to hunt diamond thieves—eh!'

Of course his meaning was plain to me, but I chose to differ with him; there was no better way of rousing his wits.

'Of all the expert thieves on the two continents, the only ones who will not come here will be those whose faces are in every rogues' gallery in the land,' I replied. 'It would be too much good luck to find Bob and Delbras mixed up in this deal.'

'And yet,' declared he, 'I am willing to wager that it's the work of Delbras et al. Who but he would have prepared himself with a full assortment of paste jewels. Honestly, old man, don't you agree with me?'

'Yesterday,' I replied, 'I was ready to swear that Greenback Bob and his friend Delbras were circulating, perhaps issuing, those two-dollar Government notes.'

'And what's to hinder you thinking so still, eh?'

'Only that it would be too much of a fairy story to find our work cut out for us in such a way.'

Dave threw one sturdy leg across the chair nearest him, and settled himself in his favourite attitude for an argumentative discourse.

'Young man,' he began, 'if you can find anything connected with this White City that has sprung out of the lake and the prairie that has not a touch of the Arabian Nights about it, I want to know where it is. Can you show me anything more fairylike than this fairy city, built, as it has been, in the teeth of time?'