Electricity

hemispheres are purely supernumerary was Soltmann's often-quoted observation that in new-born puppies the motor zone of the cortex is not excitable by electricity and only becomes so in the course of a fortnight, presumably after the experiences of the lower centres have educated it to motor duties. Paneth's later

as if they were all built out of unchanging simple ideas. It is convenient often to treat curves as if they were composed of small straight lines, and electricity and nerve-force as if they were fluids. But in the one case as in the other we must never forget that we are talking symbolically, and that there is nothing

No doubt it is often convenient to formulate the mental facts in an atomistic sort of way, and to treat the higher states of consciousness as if they were all built out of unchanging simple ideas which ‘pass and turn again.’ It is convenient often to treat curves as if they were composed of small straight lines, and electricity and nerve-force as if they were fluids. But in the one case as in the other we must never forget that we are talking symbolically, and that there is nothing in nature to answer to our words. A permanently existing ‘Idea’ which makes its appearance before the footlights of consciousness at periodical intervals is as mythological an entity as the Jack of Spades. Within each personal consciousness, thought is sensibly continuous. I can only define ‘continuous’ as that which is without breach, crack, or division.

In general, however, the stimulating effects of a sense-impression proponderate over the inhibiting effects, so that we may roughly say, as we began by saying, that the wave of discharge produces an activity in all parts of the body. The task of tracing out all the effects of any one incoming sensation has not yet been performed by physiologists. Recent years have, however, begun to enlarge our information; and we have now experimental proof that the heart-beats, the arterial pressure, the respiration, the sweat- glands, the pupil, the bladder, bowels, and uterus, as well as the voluntary muscles, may have their tone and degree of contraction altered even by the most insignificant sensorial stimuli. In short, a process set up anywhere in the centres reverberates everywhere, and in some way or other affects the organism throughout, making its activities either greater or less. It is as if the nerve-central mass were like a good conductor charged with electricity, of which the tension cannot be changed at all without changing it everywhere at once.

Well, of two conceptions equally fit to satisfy the logical demand, that one which awakens the active impulses, or satisfies other aesthetic demands better than the other, will be accounted the more rational conception, and will deservedly prevail. There is nothing improbable in the supposition that an analysis of the world may yield a number of formulae, all consistent with the facts. In physical science different formulae may explain the phenomena equally well, — the one-fluid and the two-fluid theories of electricity, for example. Why may it not be so with the world? Why may there not be different points of view for surveying it, within each of which all data harmonize, and which the observer may therefore either choose between, or simply cumulate one upon another? A Beethoven string-quartet is truly, as some one has said, a scraping of horses’ tails on cats’ bowels, and may be exhaustively described in such terms; but the application of this description in no way precludes the simultaneous applicability of an entirely different description. Just so a thorough-going interpretation of the world in terms of mechanical sequence is compatible with its being interpreted teleologically, for the mechanism itself may be designed.

All abstract hypotheses sound unreal; and the abstract notion that our brains are colored lenses in the wall of nature, admitting light from the super- solar source, but at the same time tingeing and restricting it, has a thoroughly fantastic sound. What is it, you may ask, but a foolish metaphor? And how can such a function be imagined? Isn’t the common materialistic notion vastly simpler? Is not consciousness really more comparable to a sort of steam, or perfume, or electricity, or nerve-glow, generated on the spot in its own peculiar vessel? Is it not more rigorously scientific to treat the brain’s function as function of production? The immediate reply is, that, if we are talking of science positively understood, function can mean nothing more than bare concomitant variation.

It is true that a grown-up adult keeps gaining well into middle age a great knowledge of details, and a great acquaintance with individual cases connected with his profession or business life. In this sense, his conceptions increase during a very long period; for his knowledge grows more extensive and minute. But the larger categories of conception, the sorts of thing, and wider classes of relation between things, of which we take cognizance, are all got into the mind at a comparatively youthful date. Few men ever do acquaint themselves with the principles of a new science after even twenty-five. If you do not study political economy in college, it is a thousand to one that its main conceptions will remain unknown to you through life. Similarly with biology, similarly with electricity. What percentage of persons now fifty years old have any definite conception whatever of a dynamo, or how the trolley-cars are made to run? Surely, a small fraction of one per cent.

Without any expectation of it, without ever having the thought in my mind that there was any such thing for me, without any recollection that I had ever heard the thing mentioned by any person in the world, the Holy Spirit descended upon me in a manner that seemed to go through me, body and soul. I could feel the impression, like a wave of electricity, going through and through me. Indeed, it seemed to come in waves and waves of liquid love; for I could not express it in any other way. It seemed like the very breath of God. I can recollect distinctly that it seemed to fan me, like immense wings. “No words can express the wonderful love that was shed abroad in my heart. I wept aloud with joy and love; and I do not know but I should say I literally bellowed out the unutterable gushings of my heart.

He published physical treatises and experimental investigations of his own, especially in electricity. Electrical measurements, as you know, are the basis of electrical science, and Fechner’s measurements in galvanism, performed with the simplest self-made apparatus, are classic to this day. During this time he also published a number of half-philosophical, half-humorous writings, which have gone through several editions, under the name of Dr. Mises, besides poems, literary and artistic essays, and other occasional articles. But overwork, poverty, and an eye-trouble produced by his observations on after-images in the retina (also a classic piece of investigation) produced in Fechner, then about thirty-eight years old, a terrific attack of nervous prostration with painful hyperaesthesia of all the functions, from which he suffered three years, cut off entirely from active life.

An idea that thus negates a first idea may itself in turn be negated by a third idea, and the first idea may thus regain its natural influence over our belief and determine our behavior. Our philosophic and religious development proceeds thus by credulities, negations, and the negating of negations. But whether for arousing or for stopping belief, ideas may fail to be efficacious, just as a wire, at one time alive with electricity, may at another time be dead. Here our insight into causes fails us, and we can only note results in general terms. In general, whether a given idea shall be a live idea depends more on the person into whose mind it is injected than on the idea itself. Which is the suggestive idea for this person, and which for that one? Mr. Fletcher’s disciples regenerate themselves by the idea (and the fact) that they are chewing, and re-chewing, and super-chewing their food. Dr. Dewey’s pupils regenerate themselves by going without their breakfast — a fact, but also an ascetic idea. Not every one can use these ideas with the same success.