232 Titles and Subjects hated. He finds out that he was really at last caressed by the Huxleys and Tyndalls as one of themselves. A Collection of the letters of people who have committed suicide; and also of people who only threaten to do so. The first may be got abundantly from reports of coroners* inquests, the second would be harder to come by. The Structure and Comparative Anatomy of Fads, Fancies and Theories; showing, moreover, that men and women exist only as the organs and tools of the ideas that dominate them ; it is the fad that is alone living. An Astronomical Speculation: Each fixed star has a separate god whose body is his own particular solar system, and these gods know each other, move about among each other as we do, laugh at each other and criticise one another's work. Write some of their discourses with and about one another. Imaginary Worlds A world exactly, to the minutest detail, a duplicate of our own, but as we shall be five hundred, or from that to twenty thousand, years hence. Let there be also another world, a duplicate of what we were five hundred to twenty thousand years ago. There should be many worlds of each kind at different dates behind us and ahead of us. I send a visitor from a world ahead of us to a world behind us, after which he comes to us, and so we learn what happened in the Homeric age. My visitor will not tell me what has happened in his own world since the time corresponding to the present moment in our world, because the knowledge of the future would be not only fatal to ourselves but would upset the similarity between the two worlds, so they would be no longer able to refer to us for information on any point of history from the moment of the introduction of the dis- turbing element. When they are in doubt about a point in their past history that we have not yet reached they make preparation and forecast its occurrence in our world as we foretell eclipst**^ and transits of Venus, and all their most accomplished his- torians investigate it; but if the conditions for observation have been unfavourable, or if they postpone consideration