Prof. M. P. Hatfield has said: "The arrangement of the nerve-envelopes is so like that of the best constructed electrical cables that we cannot help thinking that both were constructed to conduct something very much alike. I know that there are those who stoutly maintain that nerve force is not electricity, and it is not in the senses that an electrical battery is not the same thing as a live man; but, nevertheless, nerve-force is closely allied to that wonderful thing that for want of a better and clearer understanding we agree to call 'electricity.'" Human Etheric Force. Professor Haddock, a popular writer along the lines of scientific psychology and kindred subjects, in a part of his work in which he was considering the idea that thought may be communicated by means of ether-vibrations, forcibly says: "The ether is accepted by science as a reality, and as a medium for light, heat, electricity, magnetism, etc. The nervous system is certainly comparable to an electric battery with connecting wires. Communications of thought and feeling without the mediation of sense-perceptions as commonly understood, is now established. Inanimate objects exert, now and then, 'strange influences.' People certainly carry with them a personal atmosphere. The representation of the condition of these facts by a psychic field, compared to the magnetic or electric field, becomes, therefore, if not plausible, at least convenient. As such a 'field' exists surrounding the sun, so may a 'field' be assumed as surrounding each human individual. 'We have already strong grounds for believing that we live in a medium which conveys to-and-fro movements to us from the sun, and that these movements are electro-magnetic, and that all the transformation of light and heat, and indeed the phenomena of life, are due to the electrical energy which comes to us across the vacuum which exists between us and the sun--a vacuum which is pervaded by the ether, which is a fit medium for the transmission of electro-magnetic waves.' By means, then, of a similar theory applied to mind and brain and body, we may find reasonable explanations of many otherwise insoluble mysteries of life, and, which is of more importance, deduce certain suggestions for the practical regulation of life in the greatest individual interest." The Brain-Battery.