03/09/2026
There is a very interesting historical connection between Mesmerism and Hahnemann’s homoeopathy, but it is often misunderstood. I have misunderstood the connection for many years...
Hahnemann and Mesmerism
Franz Anton Mesmer (1734–1815) proposed animal magnetism—a supposed subtle force that could be directed by the practitioner and influence the patient.
Hahnemann was familiar with Mesmerism and did not simply dismiss it. In the Organon, particularly the later editions, he accepted that Mesmeric influence could produce genuine effects in human beings.
But there is an important distinction:
Mesmerism: an influence is exerted by one person upon another.
Homoeopathic medicine: the medicinal substance produces an artificial disease-like disturbance, which is then selected according to the patient's symptom picture.
Hahnemann's vital force: both phenomena were interpreted within his broader conception of a dynamic living principle.
Hahnemann's striking statement
In §288 of the 6th edition of the Organon, Hahnemann discusses Mesmerism under what he calls animal magnetism and describes it as a curative method involving the influence of one human being upon another.
He even distinguishes positive and negative Mesmerism, and describes practitioners producing effects through the laying on of hands, passes and other procedures.
This is significant because Hahnemann clearly regarded the phenomenon as something that could alter the patient's state, rather than merely being imagination or deception.
But Hahnemann did NOT equate Mesmerism with homoeopathy
This is where modern interpretations sometimes go too far.
Hahnemann's homoeopathy rests upon the principle that:
the medicine must be capable of producing symptoms similar to those of the disease.
Mesmerism works through a quite different mechanism in Hahnemann's theoretical framework: direct dynamic influence from one person upon another.
So, in Hahnemannian terms, Mesmerism is closer to a dynamic intervention upon the vital force, whereas the properly selected homoeopathic remedy is a medicinal artificial disease designed to replace the natural disease.
There is nevertheless a fascinating philosophical overlap
Both reject the idea that disease is simply a mechanical disturbance of organs.
Both assume that something dynamic happens to the living organism.
And both led Hahnemann toward the idea that changes in the patient's state can occur without the crude mechanical administration of material quantities of drugs.
That makes Mesmerism historically important to understanding Hahnemann's thinking—even though Mesmerism is not the foundation of homoeopathy.
Yes. There is a clear historical development, Mesmerism does not appear as a developed doctrine in the 1810 first edition of the Organon.
The dedicated discussion is introduced in the third edition (1829), retained in 1833, and substantially reworked in the sixth edition.
I’ll distinguish the original German wording from English translation so we don't accidentally present a later translation as Hahnemann's own words.
1810 — First Organon
In the 1810 first edition, Hahnemann does not have a dedicated section on Mesmerism/animal magnetism.
This is important historically. The first Organon was principally concerned with establishing the foundations of the new therapeutic method—similars, proving medicines, the individualisation of disease, and the practical method of treatment. The later dedicated Mesmerism sections were added subsequently.
The bibliographical/variant evidence confirms that the specific Mesmerism section belongs to the later development of the Organon.
So I would not attribute a Mesmerism passage to the 1810 Organon.
1829 — Third edition
This is where things become very interesting.
The third edition (1829) introduced two new paragraphs specifically dealing with animal magnetism/Mesmerism:
§319 and §320.
The opening of §319 is:
„Hier finde ich noch nöthig, des von der Natur aller übrigen Arzneien abweichenden, sogenannten thierischen Magnetisms, oder vielmehr des (dankbarer nach Mesmer, seinem ersten Begründer, zu benennenden) Mesmerismus Erwähnung zu thun.“
Literally:
“Here I find it still necessary to mention the so-called animal magnetism, which differs in its nature from all other medicines, or rather Mesmerism (which should rather be named after Mesmer, its first founder, out of gratitude).”
This wording is particularly revealing.
Hahnemann is not treating Mesmerism as merely a psychological trick. He places it alongside therapeutic agents, while simultaneously stressing that it differs from medicines in its nature.
The third edition's §319 became the ancestor of the later §288. The historical analysis of the third edition specifically identifies §§319–320 as the new Mesmerism material.
1833 — Fourth edition
By the fourth edition (1833), the Mesmerism doctrine had become much more developed.
The important point is that Hahnemann increasingly conceptualised Mesmerism in terms of dynamic influence upon the vital force.
The mature formulation that eventually appears in the sixth edition describes the mesmeriser's influence as something capable of acting:
“dynamically”
upon the patient.
This is not an incidental word. It places Mesmerism squarely within Hahnemann's broader dynamic conception of disease and cure.
The fifth-edition text, which represents the mature version immediately preceding the sixth edition, begins §293:
“I find it necessary to allude here to animal magnetism, as it is termed, or rather mesmerism (as it should be called, out of gratitude to Mesmer, its first founder), which differs so much in its nature from all other therapeutic agents.”
It then says that this curative power can act through the will of a well-intentioned person and can act homoeopathically in certain circumstances.
That is an extraordinary statement and deserves emphasis.
6th edition — §§288–289
By the sixth edition Hahnemann had substantially reorganised the material.
The old §293 became §288, and the old §294 became §289.
Hahnemann begins §288:
“I find it yet necessary to allude here to animal magnetism, as it is termed, or rather Mesmerism (as it should be called in deference to Mesmer, its first founder) which differs so much in its nature from all other therapeutic agents.”
Then comes one of his strongest statements:
“This curative force, often so stupidly denied and disdained for a century…”
He calls it:
“a marvellous, priceless gift of God to mankind”
and says that the strong will of a well-intentioned person can cause the vital energy of the healthy mesmeriser to enter another person “dynamically.”
He then gives the analogy:
“just as one of the poles of a powerful magnetic rod upon a bar of steel.”
He describes three effects:
Replacing deficient vital force
Drawing off excessive vital force
Restoring a disturbed distribution of vital force
and says that the morbid condition of the patient's life principle can thereby be extinguished and replaced by the normal condition of the mesmeriser.
He specifically mentions:
“old ulcers, amaurosis, paralysis of single organs and so forth.”
§289 — Positive and negative Mesmerism
Here Hahnemann becomes even more specific.
He states:
“All the above-mentioned methods of practising mesmerism depend upon an influx of more or less vital force into the patient, and hence are termed positive mesmerism.”
Then he introduces the opposite:
“negative mesmerism.”
Positive Mesmerism adds/influxes vital force.
Negative Mesmerism discharges excessive vital force.
He describes the latter as involving rapid passes of the hand from the head towards the feet.
And he gives a warning that is easy to overlook: Hahnemann strongly condemned excessive Mesmerism that produced somnambulism.
He describes repeated, prolonged passes on weak nervous patients as producing:
“a highly unnatural and dangerous state”
and specifically rejects attempts to cure chronic disease by producing such a state.
The most important development: 5th → 6th edition
There is a fascinating change here.
In the 5th edition §293, Hahnemann explicitly says that Mesmerism can sometimes:
“act homoeopathically, by the production of symptoms similar to those of the diseased state to be cured.
That wording is extremely important.
It means Hahnemann did not regard Mesmerism as necessarily opposed to the homoeopathic principle.
Rather, he recognised at least two possible modes:
Mesmerism acting homoeopathically
→ producing similar symptoms.
Mesmerism acting dynamically
→ supplying, redistributing or discharging vital force.
The sixth edition reorganises this material, with §288 dealing principally with the nature of Mesmerism and §289 with positive/negative Mesmerism.
1842 manuscript / later publication
§§288–289: sophisticated distinction between positive and negative Mesmerism, dynamic influx/discharge of vital force
The third edition is particularly significant because it is the point at which Hahnemann formally incorporated Mesmerism into the therapeutic framework of the Organon.
And this leads to a much bigger Hahnemannian question
If we read Hahnemann without later theoretical filters, something quite striking emerges:
Hahnemann believed that a human being could dynamically influence another human being's vital force, even without physical contact.
And in the fifth edition he explicitly says that this influence could, under certain circumstances, act homoeopathically.
That creates a very interesting connection between §26 (the law of similars), §246–248 (dynamic medicinal action), and §§288–289 (Mesmerism).
§§319–320 belong to the 3rd edition of the Organon, published in 1824—not 1829. The 1829 4th edition renumbered the Mesmerism material as §§291–292. The 1833 5th edition uses §§293–294, and the 6th-edition manuscript uses §§288–289. The bibliographical record confirms this sequence.
So the historically correct comparison is:
1824 (3rd) §§319–320 → 1829 (4th) §§291–292 → 1833 (5th) §§293–294 → 1842 manuscript (6th) §§288–289. sentence by sentence.
Here is the useful comparison, concentrating on the actual development of Hahnemann's wording rather than giving modern English translations
1. 1824 — 3rd edition §§319–320
The third edition is where Hahnemann first inserted the dedicated Mesmerism section. Contemporary bibliographical research specifically identifies §§319 and 320 as the new Mesmerism paragraphs.
§319 — positive application
The section heading itself reads:
„Thierischer Magnetismus (Mesmerismus). Die positive Anwendung.“
And §320:
„Die negative Anwendung des Mesmerismus.“
The 1824 edition therefore already makes the fundamental distinction:
positive application → negative application.
That distinction survives all the way into the sixth edition.
2. 1829 — 4th edition §§291–292
This is the first important correction to the numbering.
By 1829 the former §§319–320 had become §§291–292. The 4th edition has 292 numbered aphorisms.
The Mesmerism section is still explicitly:
„Thierischer Magnetismus (Mesmerismus).“
with the two applications distinguished.
But the really important development is that Hahnemann is moving toward the much fuller formulation that appears in the fifth edition.
3. 1833 — 5th edition §293
This is the crucial version.
Hahnemann writes:
„Ich finde nöthig, hier noch des sogenannten thierischen Magnetismus, oder vielmehr des Mesmerismus (wie er, seinem ersten Begründer zu Ehren, genannt werden sollte) zu erwähnen, der sich in seiner Natur so sehr von allen andern Heilmitteln unterscheidet.“
Then:
„Diese oft so thörichter Weise geleugnete Heilkraft, welche durch die Berührung eines wohlwollenden, seinen Willen kräftig anwendenden Menschen auf einen Kranken überströmt…“
And now comes the remarkable passage:
„…wirkt entweder homöopathisch, durch Hervorbringung ähnlicher Symptome, wie die des zu heilenden Krankheitszustandes…“
This is one of the most important statements Hahnemann ever made concerning Mesmerism.
He explicitly says that Mesmerism can act:
„homöopathisch“
by:
„Hervorbringung ähnlicher Symptome“
—that is, by producing symptoms similar to those of the disease being treated.
He then gives the example of the single pass:
„…eines einzigen Striches… von der Höhe des Kopfes abwärts über den Körper bis zu den Spitzen der Zehen…“
and says that this can be useful:
„bei Gebärmutterblutungen, selbst im letzten Stadium, wenn der Tod nahe scheint.“
This is substantially more than simply saying that Mesmerism is "dynamic."
Hahnemann is explicitly placing one mode of Mesmeric action under the homoeopathic principle of similarity.
4. 1833 — §294
Immediately afterwards he writes:
„Alle die gedachten Arten von Ausübung des Mesmerismus beruhen auf einer Einströmung von mehr oder weniger Lebenskraft in den Kranken und werden daher positiver Mesmerismus genannt.“
Then:
„Eine entgegengesetzte Art, den Mesmerismus anzuwenden, verdient aber, weil sie gerade das Gegentheil bewirkt, negativer Mesmerismus genannt zu werden.“
And then:
„Hierher gehören die Striche, welche zur Erweckung aus dem somnambulen Schlafe gebraucht werden…“
He describes the rapid downward pass:
„…vom Scheitel bis zu den Spitzen der Zehen.“
And gives the striking example of restoring a woman apparently dead after sudden suppression of menstruation.
5. 1842 — 6th edition §§288–289
Now we reach the final Hahnemannian formulation.
The opening of §288 is:
„Hier finde ich noch nöthig, des von der Natur aller übrigen Arzneien abweichenden, sogenannten thierischen Magnetisms, oder vielmehr des (dankbarer nach Mesmer, seinem ersten Begründer, zu benennenden) Mesmerisms Erwähnung zu thun.“
Notice the change.
The 5th edition had:
„zu Ehren“
The 6th has:
„dankbarer nach Mesmer, seinem ersten Begründer, zu benennenden“
—more explicitly expressing gratitude to Mesmer.
Then:
„Diese, oft thörichter Weise, während eines ganzen Jahrhunderts geleugnete oder geschmähte Heilkraft…“
And Hahnemann intensifies the language dramatically:
„…ein wundersames, unschätzbares, dem Menschen verliehenes Geschenk Gottes…“
That phrase „Geschenk Gottes“ is a genuine sixth-edition development.
He then states that through the strong will of a benevolent person:
„…auf einen Kranken durch Berührung und selbst ohne dieselbe, ja selbst in einiger Entfernung die Lebenskraft des gesunden mit dieser Kraft begabten Mesmerirers in einen andern Menschen dynamisch einströmt…“
That is an extraordinary statement.
„in einen andern Menschen dynamisch einströmt“
= dynamically flows into another human being.
He compares it with:
„…einer der Pole eines kräftigen Magnet-Stabes in einen Stab rohen Stahls“
—one pole of a powerful magnet acting upon a bar of raw steel.
6. The major change in §288
The 6th edition then gives three distinct operations.
A. Replacement
„…teils die hie und da in seinem Organismus mangelnde Lebenskraft ersetzt…“
B. Discharge
„…teils die in andern Stellen allzusehr angehäufte… Lebenskraft ableitet…“
C. Redistribution
„…mindert und gleicher vertheilt…“
And finally:
„…überhaupt die krankhafte Verstimmung des Lebensprincips der Kranken auslöscht und mit der normalen des auf ihn kräftig einwirkenden Mesmerirers ersetzt…“
That last phrase is particularly important:
„mit der normalen [Lebenskraft] des … Mesmerirers ersetzt“
Hahnemann is saying that the patient's disordered life principle can be replaced by the normal state of the mesmeriser acting powerfully upon him.
7. §289 — the final formulation
The sixth edition begins:
„Alle die gedachten Arten von Ausübung des Mesmerisms, beruhen auf einer dynamischen Einströmung von mehr oder weniger Lebenskraft in den Leidenden und werden daher positiver Mesmerism genannt.“
Then:
„Eine dem entgegengesetzte Ausübung des Mesmerismus aber verdient, da sie das Gegentheil bewirkt, negativer Mesmerismus genannt zu werden.“
This is essentially the mature formulation of the positive/negative distinction.
The development
1824 §319
Mesmerism introduced explicitly; positive application
1824 §320
negative application
1829 §§291–292
Same basic distinction, with development of the therapeutic description
1833 §293
Mesmerism explicitly said to be capable of acting „homöopathisch“ by producing similar symptoms
1833 §294
Positive = influx of vital force; negative = opposite/discharge
1842 §288
Much stronger formulation: Mesmerism is a „Geschenk Gottes“, capable of dynamically transmitting the mesmeriser's vital force
1842 §289
Mature positive/negative Mesmerism doctrine
The evolution is therefore quite striking.
Hahnemann moves through three stages:
1824:
Mesmerism is a therapeutic phenomenon.
↓
1833:
Mesmerism can operate homoeopathically by producing similar symptoms.
↓
1842:
Mesmerism is a direct dynamic transmission of the vital force of one human being to another.
And there is one particularly important point for a genuinely Hahnemannian reading:
Hahnemann did not regard "homoeopathic" and "Mesmeric" as synonymous terms. Rather, he recognised that Mesmerism could sometimes operate homoeopathically, while also describing another mode in terms of direct dynamic influx, redistribution or discharge of vital force.
That distinction is often completely lost in modern summaries of §288–289.
The 1810 first edition did not contain §§319–320; the dedicated Mesmerism paragraphs first appear in the 1824 third edition.
Hahnemann had nevertheless been concerned with magnetism earlier in his career, so absence from the 1810 Organon does not mean absence of interest in Mesmerism in 1810.
If you want to go deeper, the really fascinating next comparison is §26 → §29 → §34 → §246 → §288–289, because it shows exactly how Hahnemann's concepts of similarity, dynamic action, vital force and Mesmerism fit together—and where they actually do not fit together.
This is where the relationship becomes much more interesting. If we read Hahnemann without importing later Kentian or modern homoeopathic interpretations, §§26, 29, 34, 246 and 288–289 reveal a fairly coherent dynamic theory—but also an important boundary between medicinal homoeopathy and Mesmerism.
1. §26 — similarity is the governing therapeutic principle
Hahnemann's famous formulation is:
„Eine schwächere dynamische Affection wird von einer stärkern, ähnlichen, ausgelöscht…“
A weaker dynamic affection is extinguished by a stronger, similar one.
The important words are:
schwächere dynamische Affection
→ weaker dynamic affection
stärkern, ähnlichen
→ stronger, similar
ausgelöscht
→ extinguished
So §26 is fundamentally about one dynamic state overcoming another because it is similar and stronger.
That immediately makes §26 relevant to Mesmerism.
2. §29 — the medicinal disease replaces the natural disease
Hahnemann develops the idea further in §29.
The artificial medicinal disease must be:
„ähnlich“
to the natural disease, but:
„etwas stärker“
Then the natural disease is:
„ausgelöscht“
The sequence is:
Natural disease
↓
Similar artificial medicinal disease
↓
Stronger dynamic influence
↓
Natural disease disappears
This is the theoretical architecture of homoeopathic cure.
And notice something important:
Hahnemann is not saying the medicine repairs an organ.
The medicine produces a new dynamic disturbance, sufficiently similar and sufficiently strong to displace the existing one.
3. §34 — similarity must be sufficiently close
§34 adds another essential qualification.
The artificial medicinal disease must be:
„der natürlichen Krankheit ähnlich“
and must be:
„an Intensität etwas stärker“
But Hahnemann also insists that it must be sufficiently similar.
This prevents us from reducing homoeopathy to:
"Anything dynamic can cure anything."
No.
For Hahnemann, similarity is indispensable.
That becomes crucial when we compare homoeopathy with Mesmerism.
4. §246 — the dynamism becomes even more explicit
§246 is especially important because Hahnemann discusses the continued action of the medicine.
He speaks of the:
„Lebenskraft“
and the medicinal influence upon it.
The physician must not continually interfere while the remedy is still acting.
This gives us a fundamental Hahnemannian model:
Medicine → dynamic influence → vital force → alteration of disease state
The medicinal substance does not need to remain physically present in the organism in order to continue producing its effect.
(That is one reason Hahnemann's later LM methodology makes much more sense within his own conceptual framework.)
5. Now put §288 beside §26
Here is where the Mesmerism question becomes fascinating.
§26 says, essentially:
A stronger similar dynamic affection extinguishes a weaker one.
§288 says that Mesmerism can dynamically influence another person's vital force.
So, theoretically:
Homoeopathic medicine
Medicine
→ produces an artificial disease
→ similar to the natural disease
→ stronger
→ extinguishes the natural disease.
Mesmerism
Mesmeriser
→ dynamically influences the patient
→ vital force of mesmeriser enters/influences patient
→ patient's disturbed dynamic state can be altered.
The mechanisms are therefore analogous, but they are not identical.
6. The crucial distinction
This is where I think a genuinely Hahnemannian reading has to be very precise.
Homoeopathy
The medicinal agent itself must produce a symptom complex sufficiently similar to the patient's disease.
Mesmerism
The human mesmeriser dynamically influences the patient.
Therefore:
Homoeopathy = medicinal similarity
Mesmerism = interpersonal dynamic influence
They overlap in Hahnemann's dynamic philosophy, but they aren't the same therapeutic method.
7. And Hahnemann explicitly connects them
This is perhaps the most extraordinary part.
In the 5th edition's Mesmerism discussion, Hahnemann says Mesmerism can sometimes act:
„homöopathisch“
through:
„Hervorbringung ähnlicher Symptome“
That means he actually recognised a Mesmeric procedure that could conform to the same fundamental therapeutic law of similarity.
So Hahnemann's position is not:
"Mesmerism is homoeopathy."
Nor is it:
"Mesmerism has nothing whatsoever to do with homoeopathy."
It is closer to:
Mesmerism is a distinct dynamic therapeutic phenomenon which can, under certain circumstances, operate according to the homoeopathic principle.
That is a much more subtle position.
8. §288 introduces something beyond ordinary homoeopathy
The sixth edition goes further.
Hahnemann says the mesmeriser's vital force can:
„dynamisch einströmt“
into another person.
And he describes this as potentially:
replacing deficient vital force,
removing excessive vital force,
redistributing vital force,
and restoring the patient's disturbed condition.
Notice that similarity is not the central criterion in this part of §288.
That is the crucial distinction.
Homoeopathic medicinal action
Similarity is essential.
Mesmeric vital-force transfer
Dynamic influence is central.
This means we should resist the temptation to make §§26 and 288 say exactly the same thing.
They don't.
9. §289 — positive and negative Mesmerism
Hahnemann then explicitly divides Mesmerism into:
Positive Mesmerism
„Einströmung von mehr oder weniger Lebenskraft“
An influx of more or less vital force.
Negative Mesmerism
The opposite operation—removing or discharging excessive dynamic force.
This is quite different from the ordinary homoeopathic prescription.
A homoeopathic physician does not normally determine:
"This patient has too little vital force; I shall transfer some of mine."
That is not the basis of Hahnemann's medicinal method.
10. The deeper Hahnemannian structure
If we arrange these aphorisms conceptually:
§26
Similarity + greater dynamic strength
↓
§29
Similar artificial disease displaces natural disease
↓
§34
Similarity must be sufficiently close
↓
§246
The medicinal dynamic action continues through the vital force
↓
§288
Human dynamic influence can affect the vital force
↓
§289
That influence may be positive or negative
This gives us a very interesting conclusion.
Hahnemann's concept of "dynamic" is broader than homoeopathy itself.
Dynamic action ≠ automatically homoeopathic action.
Homoeopathy is a particular therapeutic application of dynamic action governed by similarity.
Mesmerism is another dynamic phenomenon which Hahnemann believed could sometimes operate according to similarity but could also operate through direct dynamic influence.
And this explains something important about Hahnemann's later thinking
It is tempting to interpret everything Hahnemann says about the Lebenskraft through the lens of later homoeopathic schools.
But his own texts don't quite permit that.
For Hahnemann:
Lebenskraft → dynamic
doesn't automatically mean:
Lebenskraft → homoeopathic remedy
His mature writings contain several different forms of dynamic interaction.
And Mesmerism is particularly valuable historically because it exposes that distinction.
In one sentence:
§26 gives the general principle of dynamic similarity; §§29 and 34 apply it therapeutically to medicinal disease; §246 describes the continuing medicinal action upon the vital force; §§288–289 show that Hahnemann believed dynamic influence could also occur directly between human beings—and that such Mesmeric influence was not necessarily identical with homoeopathic medicinal action.
That is, in my view, the cleanest way to read the texts on Hahnemann's own terms rather than through later doctrine.
