other. CONCLUSION. m It is hoped that any reader who has been sufficiently inter^stod £0 follow this treatise thus far, may by this time have a general idea of the astral plane and its possibilities, such as will enable -him to understand and fit into their proper places in its scheme any facts in connection with it which J^e may pick up in his reading. Though only the , roughest Sketch has been given of a very great subject, enough 'has perj^ps been said to show the extreme importance of astral perception in the study of biology, physics, chemistry, astronomy, medicine, and history, and the great impulse which might be given to all these sciences by its development.