La vérité sur le prétendu Silphion de la Cyrénaïque : $b ("Silphium cyrenaicum", du Dr Laval): ce qu'il est, ce qu'il n'est pas

In the bustling world of 19th‑century medicine, a heated dispute erupts over a plant long celebrated by the ancients. Scholars, pharmacists and doctors clash on whether the “silphium” harvested in Cyrenaica is the legendary Greek spice and remedy or merely a common thapsia. The brochure opens with a vivid appeal to scientific rigor, presenting correspondence between Dr. Laval, who champions the plant’s virtues, and Dr. Chartier, a skeptical military physician who refuses to endorse its therapeutic claims.

The author, a natural‑history museum attaché, unpacks the botanical evidence, contrasting the historic silphion with the modern Thapsia garganica and exposing the commercial interests that have muddied the facts. Listeners are drawn into a methodical investigation that blends archival letters, botanical illustration and earnest debate, offering a clear picture of how scientific truth was pursued—and contested—long before today’s laboratories.