In the first place, while the Brain is the Organ of the Mind—the Instrument that the Mind uses in producing Thought, still the Brain does not do the thinking, nor is the brain-matter visible to the eye, the material instrument of thinking. The Brain (and other portions of the nervous systems, including the "little brains" or ganglia, found in various parts of the body) is composed of a certain substance—a fine form of Plasm, which however is but the ground-work[Pg 211] of foundation for finer forms of Substance used in the production of Thought.
