After these explanations of the composition, construction, and transformation of matter, let us go back to unopened matter, in order to explain the mysteries of Professor Bose's discoveries by the aid of the galvanometer. The Professor has discovered that the application of this delicate instrument reveals the fact that matter which has hitherto been considered non-living is very much alive indeed, as fully alive as living animals are, because they respond to external stimulus as fully as any living being. According to Hindoo definition and idea of construction and composition of matter, it is only natural that this should be so. To the Hindoo sage this is not at all a wonder. Love, Consciousness, Ego, Mind, the ten senses, the five fine essences and the five gross forms of matter, called elements, are as much present in minerals, which are but formations of earth, as in animals. A lump of earth, or a piece of metal, or a vegetable, cannot give visible, direct response to external stimulus, because they have no openings (open physical organs) through which to manifest it. If you can by any means feel the vibrations caused by such stimulus within them, then only can you find the proof of the uniform composition and construction of all forms of matter in this one whole living universe. The galvanometer serves this purpose, and hence the Hindoo idea stands to-day as a demonstrated fact. Let us analyze the tests and proofs of the galvanometer a little more closely, and understand them according to the Hindoo doctrine of the construction and organization of what is called organic or inorganic matter. The Hindoo doctrine does not recognize the nerve or the brain as any of the principles which compose what is called the living body. The nerve is but a mere physical vehicle of the sensation of the mind (which includes the Ego and the Intellect, the part of universal consciousness in individual souls), and the brain is the physical centre of these physical channels of the mind's sensation and experiences. The mind feels the sensation of the external stimulus through its channels, the five cognizing senses, and the mind's sensations are carried through the nerves to the brain. This is in regard to animal life, which has brains and nerves formed fully or partially. The vegetables and minerals have neither brains nor nerves. How, then, do they show the same irritation as animals do to external stimulus, as shown by the galvanometer?