His voice, so manly, so strong, so tender, robbed her of the power to speak. She seized his extended hand in both of hers and pressed it hard, the tears in her eyes veiling her soul from the passion that filled his glance.

As she faced him thus, leaning to him trustfully, so vivid, so magnetic, so much the woman, so little the sibyl, that he forgot all his hesitations and doubts, filled for an instant with an irrational impulse to seize her, claiming her as his own, in defiance of the mandates of her world and the conventions of his own. But she dropped his hand and turned away, and he went out in a maze of conflicting desires, his judgment sadly clouded by the youthful riot in his blood.

At the moment he was in love with her and single-minded in his desire to aid her, to defend her, but the door had hardly closed behind him when his questionings, his suspicions began to file back, stealthily, silently, along the underways of his brain. Her distress began to seem a little too theatric, her troubles self-induced—all but one—madness did in very truth seem to hover over her, a baleful, imminent shadow.

Clarke, looming darkly, confronted him in the lower hall. "Well met, Dr. Serviss. I'd like a word with you."

"I have a request to make of you," responded Serviss. "Miss Lambert has expressed to me her great distress of mind as concerns the public tests you are planning and has asked me to intercede for her. She profoundly objects to the use of her name, and I ask—"

Clarke's voice was harsh and sullen as he interrupted: "I have considered her objections and find them insufficient."

Serviss's voice rose slightly. "Her lightest objection should be insuperable. I don't understand your point of view. I can't see by what right you ignore the wish of the human soul most vitally concerned in your crusade. You treat her as if she were a rabbit dedicated to the use of a biologic laboratory. I am better informed now than when we met in your church-study, Mr. Clarke. I know, not merely Miss Lambert's secret, but your own. It may be that you honestly think this challenge will confer great distinction upon her, but, let me assure you, it will put an ineffaceable stain upon her. Furthermore, your tests will end in disaster to yourself and to your cause."

"What do you mean by that?" interposed Pratt, who had come up and stood listening. "Do you doubt her powers?"

"I do. She will fail, and the failure will be crushing. The thing you claim is preposterous. Every time science has taken one of your mediums in hand he or she has suffered extinguishment. It is the grossest outrage to ask this girl to face certain exposure. A challenge of this blatant kind will rouse the most violent antagonism among scientists, and if you succeed in getting any really good man to take it up—which I doubt—he will be merciless."

"We want him to be," declared Clarke. "We glory in your defiance. Let your scientific men come with their bands of steel, their bolts and bars, their telephones, and their electric traps. We defy every material test."