"My peculiar relation to the writer of the following narratives is such that I must ask the reader to overlook the absence of explanation as to how they came into my possession. Withal, my knowledge of him is so meager that I should rather not undertake to say if he were himself persuaded of the truth of what he relates; certainly such inquiries as I have thought it worth while to set about have not in every instance tended to confirmation of the statements made."