The publication of the Rosicrucian manifestoes is the hinge of Casaubon’s imagined account of a secret tradition’s passage from Germany to France—and a decisive test of the account itself. He reads the texts as an appeal by English Templars and their German allies to reunite the scattered lines of an interrupted Plan. But the apparent summons produces confusion rather than a demonstrable reunion, and the novel eventually places its grand historical pattern beside a simpler possibility: that a supposedly ancient coded message was fashioned by later enthusiasts who already knew the Rosicrucian story.

Background and Intended Appeal

In Casaubon’s reconstruction, the manifestoes appear amid festivities surrounding the marriage of Elizabeth Stuart and Frederick V. He links a celebration in Heidelberg to an earlier scene in London: Salomon de Caus has built hanging gardens for the elector, and an allegorical ship presents the bridegroom as Jason. The ship’s two masts carry the emblems of the Golden Fleece and the Garter, which Casaubon also recognizes on the columns at Tomar. For him, these repeated signs make the festivities part of a continuous design rather than incidental court spectacle.

The manifestoes follow within the year. Casaubon interprets them as an appeal by English Templars, aided by German associates, to restore the interrupted Plan. Their purpose, he suggests, may have been double: to summon the French and to gather the dispersed members of the German group after the Lutheran Reformation. The text’s publication therefore becomes, in his version, an act of coordination across borders and political upheaval, though the evidence never establishes that the people addressed understood or accepted such a purpose.

Reception and the Loss of Control

The appeal does not produce a clear response. From the manifestoes’ appearance until about 1621, Casaubon says, too many replies arrive. Potentially informed voices are submerged in a mass of fanatics, enthusiasts who take the manifestoes literally, possible provocateurs seeking to obstruct the operation, and impostors. The imagined organizers may have hoped to channel a debate; instead, the debate escapes their control. In Casaubon’s telling, the surrounding controversy is not proof of a hidden organization’s success but an obstacle that makes any genuine signal difficult to distinguish from imitation and noise.

He singles out Robert Fludd as an English participant who tried to direct the discussion toward what he regards as the correct reading of the manifestoes. Yet the political setting overtakes that effort. The Thirty Years’ War has begun; the Elector Palatine is defeated by the Spanish; the Palatinate and Heidelberg are sacked; and Bohemia is engulfed in conflict. Casaubon casts the English as abandoning the German field and trying again in France. In 1623, the Rosicrucians consequently appear in Paris with more or less the same invitation they had extended to the Germans.

Paris, Rumor, and Counter-Interpretation

The Paris appearance is also filtered through hostile writing. Casaubon points to a libel that depicts the Rosicrucians as worshippers of the Devil while hinting that they meet in the Marais. The accusation and the geographical detail belong to a polemical account, not neutral confirmation of the group’s activities. Within Casaubon’s scheme, the libel is useful precisely because slander may distort a story without wholly erasing the traces that interest him; outside that scheme, its insinuations remain unverified.

The manifestoes’ reception is further complicated by the suggestion that Rosicrucianism may have been entangled with Jesuit strategy. Casaubon recalls the Rosa Jesuitica, which appears in Germany as early as 1620, and treats it as evidence that the rose’s symbolism was Catholic and Marian before it became associated with Rosicrucianism. He advances the possibility that Rosicrucianism was a reformulation of Jesuit mysticism for a Reformation-era audience. He later imagines an even more elaborate Jesuit maneuver: after the death of Postel, the Jesuits might have staged a Rosicrucian “red herring” to draw genuine groups into the open. This is explicitly a conspiratorial hypothesis proposed in the group’s discussion, not a confirmed explanation of the manifestoes’ publication.

The Code and the Problem of Dating

The novel’s examination of a purported Templar message gives the publication of the manifestoes a second, destabilizing connection. Colonel Ardenti presents a photocopy rather than the original parchment, defending the transcription associated with Ingolf by insisting that he sees no way its truth could be otherwise. He treats the last surviving copy as the original and dismisses the possibility of transcription errors without independent proof. The exchange exposes a basic weakness in the supposed chain of evidence: confidence in a reading is made to stand in for verification of its source.

Ardenti describes a first text as a demoniacal parody of a Semitic language, then explains how he applies cryptographic systems attributed to Trithemius. Taking the first letter of each word in one attempted method yields nonsense. He then turns to a wheel cipher in which each letter is replaced by the preceding letter of the alphabet, wrapping A back to Z. Reversing that operation produces the French sentence, “Les 36 inuisibles separez en six bandes”—the thirty-six invisibles divided into six groups. Ardenti treats the sentence as an announcement of an organized body and takes its wording as evidence of a secret tradition; the decoding procedure, however, does not by itself establish when the message was composed or who wrote it.

Lia supplies a counter-reading by examining the language and its historical circulation. The phrase belongs to the vocabulary of a seventeenth-century pamphlet about the Rosicrucians in Paris, rather than securely proving that a Templar text anticipated Rosicrucianism. She reverses Ardenti’s inference: if the text uses a Trithemius cipher and quotes an expression circulating among seventeenth-century Rosicrucians, it may have been written after both. Ingolf, himself attracted to hermetic messages and cryptography, could have found the Provins text, associated its numbers with Rosicrucian ideas, and encoded a sentence using a Trithemius system as an exercise. Her proposal is not presented as conclusively proven, but it demonstrates how the same details can support a chronology opposite to the one Ardenti assumes.

Significance in Casaubon’s Reconstruction

The manifestoes are central to the Plan because Casaubon makes them a bridge between an imagined Templar inheritance, English and German networks, and a later French appeal. That bridge depends on interpreting symbols, political events, pamphlets, and coded phrases as mutually confirming signs. The historical sequence he assembles—from the Heidelberg festivities through the upheaval in Germany to the Paris appearance—gives the Plan the shape of purposeful continuity, while the uncontrolled replies and hostile pamphlets reveal how little control any supposed organizers possess over the meaning of their message.

The episode also marks Casaubon’s own growing susceptibility to the method he is applying. He admits that he begins to marvel at claims such as the Great Pyramid’s supposedly meaningful relation to the distance between Earth and the Sun, and at parallels drawn between Celtic and Amerind mythologies. He starts asking houses, shop signs, clouds, and library engravings to disclose a deeper story through mystical resemblances. Lia temporarily interrupts this interpretive drift, but the manifestoes’ role in the Plan remains an example of the same attraction: a network of signs can feel like proof when every new detail is assigned a place in advance. The novel leaves the Rosicrucian appeal suspended between historical event and retrospective construction, making its uncertain provenance part of its significance.