"That is a known, though rarely-obtained, effect of Cannabis indica," observed the doctor. "And it provoked laughter again, did it?"
"Only the muttering of the cupboard-bookcase made me laugh. It was so like a great animal trying to get itself noticed, and made me think of a performing bear—which is full of a kind of pathetic humour, you know. But this mingling of the senses produced no confusion in my brain. On the contrary, I was unusually clear-headed and experienced an intensification of consciousness, and felt marvellously alive and keen-minded.
"Moreover, when I took up a pencil in obedience to an impulse to sketch—a talent not normally mine—I found that I could draw nothing but heads, nothing, in fact, but one head—always the same—the head of a dark-skinned woman, with huge and terrible features and a very drooping left eye; and so well drawn, too, that I was amazed, as you may imagine—"
"And the expression of the face—?"
Pender hesitated a moment for words, casting about with his hands in the air and hunching his shoulders. A perceptible shudder ran over him.
"What I can only describe as—blackness," he replied in a low tone; "the face of a dark and evil soul."
"You destroyed that, too?" queried the doctor sharply.
"No; I have kept the drawings," he said, with a laugh, and rose to get them from a drawer in the writing-desk behind him.
"Here is all that remains of the pictures, you see," he added, pushing a number of loose sheets under the doctor's eyes; "nothing but a few scrawly lines. That's all I found the next morning. I had really drawn no heads at all—nothing but those lines and blots and wriggles. The pictures were entirely subjective, and existed only in my mind which constructed them out of a few wild strokes of the pen. Like the altered scale of space and time it was a complete delusion. These all passed, of course, with the passing of the drug's effects. But the other thing did not pass. I mean, the presence of that Dark Soul remained with me. It is here still. It is real. I don't know how I can escape from it."
"It is attached to the house, not to you personally. You must leave the house."