Alexander von Humboldt and the Electric Self

Most of the pioneers in this series questioned a frog, a corpse, or a needle. One questioned himself. Before Alexander von Humboldt became the most famous naturalist on Earth — the man who climbed Chimborazo, measured the currents of oceans, and wrote the universe into a book called Kosmos — he spent the 1790s raising blisters on his own back and pressing metals into the raw wounds, thousands of times, trying to settle whether the electricity of life belonged to the animal or to the metal. And the most honest thing about the young genius is that after all that suffering, he still could not say who was right. He said so.

The body as apparatus

When Galvani's twitching frog legs set Europe arguing in the 1790s, the young Humboldt — mining inspector, friend of Goethe, restless and rigorous — threw himself at the question with an intensity that borders on the alarming. He performed several thousand galvanic experiments (the figure traditionally given is around four thousand, though the true count is approximate) on animals, on plant tissue, and, most strikingly, on his own body.^[3] To feel for himself the difference between "animal" and "metallic" electricity, he made his own flesh the preparation. He applied blistering plasters of cantharides to his back and shoulders, let them raise raw sores, opened them, and pressed dissimilar metals and galvanic contacts against the exposed nerves; he ran further trials at wounds on his hand, in his mouth, on his tongue.^[1] He measured the confound by suffering it.

Out of this came his two-volume Versuche über die gereizte Muskel- und Nervenfaser — "Experiments on Stimulated Muscle and Nerve Fibre" — in 1797, its full title promising conjectures on the chemical process of life. It made his early reputation as a first-rank experimentalist, and it is a genuinely rigorous book.^[5] But rigor, he would learn, is not the same as resolution.

The answer he could not reach

The trap was structural, and Humboldt was too honest not to feel it closing. The whole Galvani–Volta dispute turned on a single ambiguity: when a nerve twitched at the touch of two metals, was the electricity coming from the tissue (Galvani) or from the junction of the metals, with the animal a mere detector (Volta)? To decide, you needed to separate the two — and Humboldt's method could not. His instrument was his own graded sensation, scored on his own wounded body, with the exact variable in question — living tissue versus dissimilar metal — baked inseparably into every trial. There were no controls, no blinding, no way to hold one factor still while varying the other. The body is an unreliable judge of the body.^[4]

So he did the honest thing, which was also the inconclusive thing. He declined to crown a winner. He preferred the neutral word galvanic to Galvani's loaded "animal electricity," and he came to suspect that there was really only one force at work — perhaps identical to ordinary electricity, but, in his phrase, variously modified inside living matter — leaning increasingly toward a chemical account of life rather than a mystical one. Years earlier, as a very young man, he had flirted with a romantic "vital force"; by the Versuche he was already moving away from it, and later he would recant it outright. That self-correction — vitalist, then chemical, then skeptical of his own earlier enthusiasm — is not a weakness in the story. It is the spine of it.

The self follows him into the wild

In 1799 Humboldt left the laboratory for the world, sailing for South America with the botanist Aimé Bonpland on the expedition that would make him immortal. And the self-experimenter went with him. In the spring of 1800, on the vast plains of Calabozo in the Venezuelan Llanos, he watched local men drive horses into a muddy pool to exhaust the electric eels — the gymnotus — before handling them, and two horses drowned in the melee in under five minutes. Unable to resist, Humboldt stepped onto a freshly caught eel and took a shock he never forgot: a violent pain in the knees and every joint for the rest of the day.^[2] And in describing it, he wrote the sentence that fuses this entire story — bench and biosphere, the boy with the blistered back and the naturalist on the Llanos — into a single arc of memory:

"The sensation caused by the feeble shocks of an electric eel appeared to me analogous to that painful twitching with which I have been seized at each contact of two heterogeneous metals applied to wounds which I had made on my back by means of cantharides." — Alexander von Humboldt, Personal Narrative (trans. H. M. Williams)

Read it twice. A decade after the experiments, on another continent, feeling a living animal's own electricity pass through him, the first thing his mind reached for was the memory of the metals on his own raw nerves. The self was still the instrument. He never did win the argument he had bled for — but he carried the question, honestly unresolved, all the way around the world.

1. Step 1 · The real phenomenonExcitable tissue respondsMuscle and nerve are electrically excitable; applied current — or contact between two dissimilar metals bridging tissue — triggers contraction and sensation. Genuine and reproducible.
2. Step 2 · The forkGalvani vs. VoltaIs the electricity intrinsic to the animal (Galvani) or from the metal junction with the animal a mere detector (Volta)? The twitch is compatible with both — which is why the fight lasted a decade.
3. Step 3 · The self as preparationHumboldt probes it on his own bodyCantharides blisters, metals on raw nerves, the mouth, the tongue, and later live electric eels — he tries to feel the difference between "animal" and "metallic" for himself.^[1]
4. Step 4 · The confound winsReal effects, no resolutionSelf-experiment can't control the very variable at issue (tissue vs. metal), and the instrument — his own sensation — is biased. He lands on a mediating "galvanic" force and honestly declines to choose.^[4]
5. Step 5 · The later resolutionBoth sides partly vindicateddu Bois-Reymond (1848) → Bernstein (1902) → Hodgkin–Huxley (1952) show tissue really does generate its own electricity (Galvani) while metal junctions really do make current with no animal (Volta). His hunch of one force "variously modified" was loosely on track; his galvanic agent was superseded.^[6]

Why he belongs in this Journal

Humboldt is the purest case of first-person bioelectric science — a man who made his own nerves the apparatus in an age before instruments could do the work. But he earns his place here for the same reason the whole lineage does: he models honest inconclusiveness. He suffered thousands of experiments and refused to overclaim a single one. That refusal — not a triumphant discovery — is the virtue this Journal exists to celebrate, the calibrated honesty that says the evidence does not yet decide this and stops there. He is also the bridge from bench to biosphere: the disciplined attention that once measured a twitch in a nerve fibre went on to measure a planet, and the continuity is the point.

And he is the cautionary half of the lesson, too, which is why his story matters to anyone weighing a modern claim about "the body's own electricity." Humboldt is the clearest historical proof that the body is an unreliable instrument for judging the body — no controls, no blinding, the confound baked in, the observer scoring his own pain. His heroism did not overcome the method's limits; nothing could, until later scientists built controlled electrophysiology to answer what a single suffering body never could. When someone offers you a first-person testimonial as proof that an electrical something heals, remember the man who ran four thousand experiments on his own nerves and had the integrity to conclude that he did not know. The S.E.A.D. System is validated by none of this history; a session aims at deep relaxation, and we tell the science straight — including the parts where the greatest scientist of his age said, honestly, that he could not tell.

Quick answers

Bioelectric Pioneers series · Galvani & Volta · Nobili · Matteucci · Aldini · Humboldt · du Bois-Reymond · Hodgkin & Huxley · The Ledger · Biofield Hub →

Tomorrow on the Journal

Day 58 — The Resting Potential: Why Every Living Cell Holds a Charge. We leave the pioneers for the mechanism they were all circling — the quiet voltage every one of your cells maintains across its membrane, where it comes from, and what it does and doesn't mean.