At first his only emotion was surprise

Immediately she looked away. At first his only emotion was surprise. He would have spoken, but a little thing robbed him of speech. For a moment he was unable to remember her surname. Moreover, the strangeness of his surroundings made him undecided. He did not know what was the proper way to address her--and he still kept to the superstition of etiquette. Besides--to speak to her would involve a general explanation to all these people ... "Just leave a pin-point of gas, Mr. Smithers, please," said Lagune, and suddenly the one surviving jet of the gas chandelier was turned down and they were in darkness. The moment for recognition had passed. The joining of hands was punctiliously verified, the circle was linked little finger to little finger. Lewisham's abstraction received a rebuke from Smithers. The Medium, speaking in an affable voice, premised that he could promise nothing, he had no "_directing_" power over manifestations. Thereafter ensued a silence.... For a space Lewisham was inattentive to all that happened. He sat in the breathing darkness, staring at the dim elusive shape that had presented that remembered face. His mind was astonishment mingled with annoyance. He had settled that this girl was lost to him for ever. The spell of the old days of longing, of the afternoons that he had spent after his arrival in London, wandering through Clapham with a fading hope of meeting her, had not returned to him. But he was ashamed of his stupid silence, and irritated by the awkwardness of the situation. At one moment he was on the very verge of breaking the compact and saying "Miss Henderson" across the table.... How was it he had forgotten that "Henderson"? He was still young enough to be surprised at forgetfulness. Smithers coughed, one might imagine with a warning intention. Lewisham, recalling his detective responsibility with an effort, peered about him, but the room was very dark. The silence was broken ever and again by deep sighs and a restless stirring from the Medium. Out of this mental confusion Lewisham's personal vanity was first to emerge.