Herbert West, whose associate and assistant I was, possessed scientific interests far beyond the usual routine of a village physician. That was why, when establishing his practice in Bolton, he had chosen an isolated house near the potter’s field. Briefly and brutally stated, West’s sole absorbing interest was a secret study of the phenomena of life and its cessation, leading toward the reanimation of the dead through injections of an excitant solution. For this ghastly experimenting it was necessary to have a constant supply of very fresh human bodies; very fresh because even the least decay hopelessly damaged the brain structure, and human because we found that the solution had to be compounded differently for different types of organisms. Scores of rabbits and guinea-pigs had been killed and treated, but their trail was a blind one. West had never fully succeeded because he had never been able to secure a corpse sufficiently fresh. What he wanted were bodies from which vitality had only just departed; bodies with every cell intact and capable of receiving again the impulse toward that mode of motion called life. There was hope that this second and artificial life might be made perpetual by repetitions of the injection, but we had learned that an ordinary natural life would not respond to the action. To establish the artificial motion, natural life must be extinct—the specimens must be very fresh, but genuinely dead.