The broad, silver-backed comb, lying upon his dressing-table, was placed on the bottom of the box. the lid was closed, and the key turned in the lock. The case being securely fastened, Hiram Singh laid it before his master. "I am to open it, I suppose?" said Carne, taking the key and replacing it in the lock. "If my master pleases," replied the other. Carne accordingly turned it in the lock, and, having done so, raised the lid and looked inside. His astonishment was complete. To all intents and purposes the box was empty. The comb was not to be seen, and yet the quilted sides and bottom were, to all appearances, just the same as when he had first looked inside. "This is most wonderful," he said. And indeed it was as clever a conjuring trick as any he had ever seen. "Nay, it is very simple," Wajib Baksh replied. "The Heaven-born told me that there must be no risk of detection." He took the box in his own hands and, running his nails down the center of the quilting, divided the false bottom into two pieces; these he lifted out, revealing the comb lying upon the real bottom beneath. "The sides, as my lord will see," said Hiram Singh, taking a step forward, "are held in their appointed places by these two springs. Thus, when the key is turned the springs relax, and the sides are driven by others into their places on the bottom, where the seams in the quilting mask the join. There is but one disadvantage. It is as follows: When the pieces which form the bottom are lifted out in order, that my lord may get at whatever lies concealed beneath, the springs must of necessity stand revealed. However, to any one who knows sufficient of the working of the box to lift out the false bottom, it will be an easy matter to withdraw the springs and conceal them about his person." "As you say, that is an easy matter," said Carne, "and I shall not be likely to forget. Now one other question. Presuming I am in a position to put the real box into your hands for say eight hours, do you think that in that time you can fit it up so that detection will be impossible?" "Assuredly, my lord," replied Hiram Singh, with conviction. "There is but the lock and the fitting of the springs to be done. Three hours at most would suffice for that." "I am pleased with you," said Carne. "As a proof of my satisfaction, when the work is finished you will each receive five hundred rupees. Now you can go." According to his promise, ten o’clock on the Friday following found him in his hansom driving towards Belgrave Square. He was a little anxious, though the casual observer would scarcely have been able to tell it. The magnitude of the stake for which he was playing was enough to try the nerve of even such a past master in his profession as Simon Carne.