AUTHOR'S NOTE
Since further enquiry has shown that the word "Devachan" is etymologically inaccurate and misleading, the author would prefer to omit it altogether, and to issue this manual under the simpler and more descriptive title of "The Mental Plane". The publishers inform him, however, that this alteration of title would cause difficulties in the matter of copyright, and produce confusion in various ways, so he defers to their wishes.