By holding the written side up to the light, the answer can be read. The spirit-letters should be SECURELY sealed, addressed to the spirit, giving his or her name in full, and signed by the writer's name in full; but no address on the envelope. When left open they cannot be answered, my agency being efficient only when my mind is passive, and blank to both questions and answers. Put your questions clearly, directly, briefly. The mixed and many kinds defeat the object of the investigator. I have my photograph for sale, exhibiting my Spirit Guide's hand and arm, or form of control; taken while answering a sealed letter." [The terms here follow, with honorable notification that the money is returned in all cases when the letters are not answered.] It will be noted that this Medium's 'Spirit-guide' requires the names in full of both Spirit and writer; I was, therefore, forced to select a Spirit who knew not only me and my ways, but also the high value that is placed on that skull. Mindful that eminent Spiritual authority had pronounced this skull to be that of a colored woman, I decided, after deliberation, to address the Spirit of W---- H----, a colored servant, who had lived over forty years in one family a faithful, blameless life, and who, when he died, carried with him the respect and regards of the entire household, and whose widow and daughters still survive in honest, humble life, and to whose ears this apparent freedom with their husband's and father's name will never reach. Accordingly, the following note was addressed to the Spirit world: 'Dear W---- H----. Can you tell me anything about the owner, when alive, of the skull here in the Library? You remember how anxious I have always been to have my ignorance on this score enlightened. Have you any message to send to your wife, M---- F----? Are you happy now? Your old friend, Horace Howard Furness.' This letter was put in an envelope, which was gummed and sealed with five simple seals, without the impenetrable stitches of silk, and enclosed with the fee to Mr. Flint. It was received again in a few days with this note:--'Dear Sir--I gave your sealed Spirit-letter three sittings and regret to state that I have been unable to get an answer. My Guide at each sitting wrote and said, the Spirit called upon is not present to dictate an answer.' The fee was also returned.