As I have said before, the weird studies of Harley Warren were well known to me, and to some extent shared by me. Of his vast collection of strange, rare books on forbidden subjects I have read all that are written in the languages of which I am master; but these are few as compared with those in languages I cannot understand. Most, I believe, are in Arabic; and the fiend-inspired book which brought on the end—the book which he carried in his pocket out of the world—was written in characters whose like I never saw elsewhere. Warren would never tell me just what was in that book. As to the nature of our studies—must I say again that I no longer retain full comprehension? It seems to me rather merciful that I do not, for they were terrible studies, which I pursued more through reluctantfascination than through actual inclination. Warren always dominated me, and sometimes I feared him. I remember how I shuddered at his facial expression on the night before the awful happening, when he talked so incessantly of his theory, why certain corpses never decay, but rest firm and fat in their tombs for a thousand years. But I do not fear him now, for I suspect that he has known horrors beyond my ken. Now I fear for him.