I gave Renfield a strong opiate to-night, enough to make even him sleep, and took away his pocket-book to look at it. The thought that has been buzzing about my brain lately is complete, and the theory proved. My homicidal maniac is of a peculiar kind. I shall have to invent a new classification for him, and call him a zoöphagous (life-eating) maniac; what he desires is to absorb as many lives as he can, and he has laid himself out to achieve it in a cumulative way. He gave many flies to one spider and many spiders to one bird, and then wanted a cat to eat the many birds. What would have been his later steps? It would almost be worth while to complete the experiment. It might be done if there were only a sufficient cause.

Chapter 6