"The devil-stick," repeated the tramp, in wide-eyed surprise. "S'elp me, I don't know anything of it. Dr. Etwald met me, and ses he: 'You go to Miss Dallas?' and I ses, 'I does;' and he ses, 'You'll see Dido,' and I ses, 'I will;' and he ses, 'Say to her "Devil-stick,"' an' I ses, 'Right y'are, sir.' But es to knowing--" "Dat nuffin!" said Dido, with a lordly wave of her hand. "I black; you hab de black blood in youse also. I mek you do Obi. Um!" "What's Obi? What's you torkin of?" asked Battersea, rather nervously. "An' ow does yeou know I hev black blood?" "Obi say dat to me. Your mudder black." "Yah!" cried Battersea, derisively. "You're out of it. My mother white; but my father--" here he hesitated, and then resumed: "Yes, you're right. Dido; my father was a negro! A Seedee boy, who was a fireman on a P. and O. liner." "I hab seen dat," replied Dido, nodding her head. "Black blood in youse, an' I can do Obi on you. I send your spirit to de house of Massa Jen. You tell me ob de debble-stick." Battersea drew back and began to whimper again. "I knows es you wor at that devilry," he said, nervously. "When you claps your eyes on me I gets afeard." "Dat's so. But I take care ob you. Now get to de kitchen; dere am food for you." The old man's eyes brightened in anticipation of a feast, and he shuffled off round the corner as quickly as his age would allow him. Dido looked after him for a moment, considering the message he had brought from Dr. Etwald, and then began to think of the devil-stick. She knew very well what it was, for her grandmother had been carried off as a slave from the west coast of Africa, and knew all about Ashantee sorcery and fetish rites. These she had repeated to her granddaughter Dido, with the result that Dido, cherishing these recollections, knew exactly how to use the wand of sleep. She had spoken about it to Dr. Etwald, quite ignorant that Jen kept one as a curiosity, and now Etwald had intimated through Battersea that he wished her to do something in connection with the stick. What that something might be Dido at the present moment could not guess. She had exerted her magnetic and hypnotic influence over Battersea, not that she wished for a detailed description of the wand, for already she knew its appearance, but because it might happen that it would be necessary to use the tramp for certain purposes connected with the discovery of secrets. Dido exercised a strong influence over this weak old creature, partially on account of his half negro blood and partially because she had terrified his feeble brain by her dark hints of Obi worship.