\"The Supernatural\" is technically a religious lecture, or oratory, rather than a booklet of its own right- a transcription of a speech delivered to a live audience. Penned by Lyman Abbott (the famous Congregationalist) it helps illuminate some of the religious debates raging at the time- an internal versus external Christian deity, the role of supernatural agency, and so forth.For the occultist, it is just as important as to the Christian- these spiritual debates continue on now even as they did a century ago or a thousand years hence, and attempt to frame even the very nature of the respective gods of mankind.