Everyone who has heard of the animadversions which "The Amber Witch" excited, many asserting that it was only dressed-up history, though I repeatedly assured them it was simple fiction, will pardon me if I do not here distinctly declare whether Sidonia be history or fiction. The truth of the material, as well as of the formal contents, can be tested by anyone by referring to the authorities I have named; and in connection with these, I must just remark, that in order to spare the reader any difficulties which might present themselves to eye and ear, in consequence of the old-fashioned mode of writing, I have modernized the orthography, and amended the grammar and structure of the phrases. And lastly, I trust that all just thinkers of every party will pardon me for having here and there introduced my supernatural views of Christianity. A man's principles, as put forward in his philosophical writings, are in general only read by his own party, and not by that of his adversaries. A Rationalist will fly from a book by a Supernaturalist as rapidly as this latter from one by a Friend of Light. But by introducing my views in the manner I have adopted, in place of publishing them in a distinct volume, I trust that all parties will be induced to peruse them.