At the moment Nella regarded the Baroness’s correction of her figures as a curious chance, but afterwards, when the Baroness had ascended in the lift, the thing struck her as somewhat strange. Perhaps the Baroness Zerlinski had stayed at the hotel before. For the sake of convenience an index of visitors to the hotel was kept and the index extended back for thirty years. Nella examined it, but it did not contain the name of Zerlinski. Then it was that Nella began to imagine, what had swiftly crossed her mind when first the Baroness presented herself at the bureau, that the features of the Baroness were remotely familiar to her. She thought, not that she had seen the old lady’s face before, but that she had seen somewhere, some time, a face of a similar cast. It occurred to Nella to look at the ‘Almanach de Gotha’--that record of all the mazes of Continental blue blood; but the ‘Almanach de Gotha’ made no reference to any barony of Zerlinski. Nella inquired where the Baroness meant to take lunch, and was informed that a table had been reserved for her in the dining-room, and she at once decided to lunch in the dining- room herself. Seated in a corner, half-hidden by a pillar, she could survey all the guests, and watch each group as it entered or left. Presently the Baroness appeared, dressed in black, with a tiny lace shawl, despite the June warmth; very stately, very quaint, and gently smiling. Nella observed her intently. The lady ate heartily, working without haste and without delay through the elaborate menu of the luncheon. Nella noticed that she had beautiful white teeth. Then a remarkable thing happened. A cream puff was served to the Baroness by way of sweets, and Nella was astonished to see the little lady remove the top, and with a spoon quietly take something from the interior which looked like a piece of folded paper. No one who had not been watching with the eye of a lynx would have noticed anything extraordinary in the action; indeed, the chances were nine hundred and ninety-nine to one that it would pass unheeded. But, unfortunately for the Baroness, it was the thousandth chance that happened. Nella jumped up, and walking over to the Baroness, said to her: ‘I’m afraid that the tart is not quite nice, your ladyship.’ ‘Thanks, it is delightful,’ said the Baroness coldly; her smile had vanished. ‘Who are you? I thought you were de bureau clerk.’ ‘My father is the owner of this hotel. I thought there was something in the tart which ought not to have been there.’ Nella looked the Baroness full in the face. The piece of folded paper, to which a little cream had attached itself, lay under the edge of a plate. ‘No, thanks.’ The Baroness smiled her simple smile. Nella departed. She had noticed one trifling thing besides the paper-- namely, that the Baroness could pronounce the English ‘th’ sound if she chose.