Studies on Animals and the Rise of Comparative Anatomy at and around the Parisian Royal Academy of Sciences in the Eighteenth Century.

Argument This paper aims to understand the emergence of comparative anatomy in the eighteenth century in the Parisian Académie Royale des Sciences. As early as the 1670s, a program centered on animal anatomy was conceived, which was a first attempt to give some autonomy to studies on animals and to link anatomy with natural history, but it declined after 1690. However, a variety of studies on animals was published in the Mémoires of the Académie during the eighteenth century. We propose a descriptive typology of them in order to explore the status of animals and the significance of anatomy in each type, and to determine, in particular, which elements of Perrault's program were passed on at the Académie throughout the century. We discuss the influence of this legacy on the development of comparative anatomy after 1750, especially in Daubenton's work.

[Cooking as a therapy for dangerous mental health patients: controlled risk-taking]. / La cuisine comme thérapie pour des malades mentaux dangereux : une prise de risque maîtrisée.

Among the range of therapeutic mediators used with dangerous mental health patients in the unit for dangerous patients in Cadillac, cooking holds an important place. Led by caregivers, this activity has undeniable positive effects for the psychotic and non-psychotic patients taking part. These effects concern notably their capacities for conception, creation, organisation, execution, sensation, collaboration and socialisation. For some patients, it is also the opportunity to take the drama out of handling utensils which they previously used as weapons. As the risk factors are controlled before and during the activity, no dangerous acting out has ever occurred.

Poinsinet's Edition of the Naturalis historia (1771-1782) and the Revival of Pliny in the Sciences of the Enlightenment.

This paper analyses the revival of Pliny's Naturalis historia within the scientific culture of the late eighteenth and early nineteenth centuries, focusing on a French effort to produce an edition with annotations by scientists and scholars. Between the Renaissance and the early eighteenth century, the Naturalis historia had declined in scientific importance. Increasingly, it was relegated to the humanities, as we demonstrate with a review of editions. For a variety of reasons, however, scientific interest in the Naturalis historia grew in the second half of the eighteenth century. Epitomizing this interest was a plan for a scientifically annotated, Latin-French edition of the Naturalis historia. Initially coordinated by the French governmental minister Malesherbes in the 1750s, the edition was imperfectly realized by Poinsinet a few decades later. It was intended to rival two of the period's other distinguished multi-volume books of knowledge, Diderot and D'Alembert's Encyclopédie and Buffon's Histoire naturelle, to which we compare it. Besides narrating the scientific revival of the Historia naturalis during this period, we examine its causes and the factors contributing to its end in the first half of the nineteenth century.

Lacepède's syncretic contribution to the debates on natural history in France around 1800.

Lacepède was a key figure in the French intellectual world from the Old Regime to the Restoration, sinc e he was not only a scientist, but also a musician, a writer, and a politician. His brilliant career is a good example of the progress of the social status of scientists in France around 1800. In the life sciences, he was considered the heir to Buffon and continued the latter's Histoire naturelle, but he also borrowed ideas from anti-Buffonian (e.g. Linnaean) scientists. He broached many important subjects such as the nature of man, the classification of animals, the concept of species, and the history of the Earth. All these topics led to tensions in the French sciences, but Lacepède dealt with them in a consensual, indeed even ambiguous way. For example, he held transformist views, but his concept of evolution was far less precise and daring than Lamarck's contemporaneous attempts. His somewhat confused eclecticism allowed him to be accepted by opposing camps of the French scientific community at that time and makes his case interesting for historians, since the opinions of such an opportunistic figure can illuminate the figure of the French intellectual better than more original works could do. In turn, Lacepède's important social and scientific position gave his views a significant visibility. In this sense, his contributions probably exerted an influence, in particular with regard to the emergence of transformist theories.

From physiology to classification: comparative anatomy and Vicq d'Azyr's plan of reform for life sciences and medicine (1774-1794).

Here I analyze the anatomical thought of the French physician and naturalist Félix Vicq d'Azyr (1748-1794) in order to bring to light its importance in the development of comparative anatomy at the end of the eighteenth century. I argue that his work and career can be understood as an ambitious program for a radical reform of all biomedical sciences and a reorganization of this whole field around comparative anatomy, on the conceptual as well as the institutional level. In particular, he recommended a close connection between anatomical and physiological studies, and a generalization of the comparative approach towards organs and functions in man and animals. This conception led him not only to reform the scope, the methods, the style of description, and the vocabulary in anatomy, but also to construct a new classification of living beings and to pursue a quest for laws of organization. This strategy was successful, since Vicq d'Azyr was able to promote his thought as well as his institutional position efficiently. The Revolution and his untimely death prevented him from achieving his program, but his attempt would serve as an example for younger scientists like Cuvier.

[Haeckel: a German Darwinian?]. / Haeckel, un darwinien allemand?

German biologist Ernst Haeckel (1834-1919) is often considered the most renowned Darwinian in his country since, as early as 1862, he declared that he accepted the conclusions Darwin had reached three years before in On the Origin of Species, and afterwards, he continuously proclaimed himself a supporter of the English naturalist and championed the evolutionary theory. Nevertheless, if we examine carefully his books, in particular his General Morphology (1866), we can see that he carries on a tradition very far from Darwin's thoughts. In spite of his acceptance of the idea of natural selection, that he establishes as an argument for materialism, he adopts, indeed, a conception of evolution that is, in some respects, rather close to Lamarck's views. He is, thus, a good example of the ambiguities of the reception of Darwinism in Germany in the second part of the 19th century.

From eggs to fossils: epigenesis and transformation of species in Pander's biology.

Christian Heinrich Pander (1794-1865), a Russian scientist of German culture, is known for his epoch-making work in embryology, as well as for his important contributions to palaeontology. Indeed he viewed embryonic development and the history of the earth as two aspects of one and the same essential phenomenon, namely, a perpetual metamorphosis affecting the living world on different scales. He viewed embryology as a gradual, epigenetic transformation (as opposed to preformation) with an intermediary stage, the formation of simple germ-layers. As early as 1821, he argued more generally that species themselves transform under the influence of certain environmental factors. Pander thus embodies the very close link that existed between the triumph of epigenesis and the expansion of transformist theories in the early 19th century.

Homeosis and atavistic regeneration: the 'biogenetic law' in Entwicklungsmechanik.

Homeosis is a developmental abnormality corresponding to the transformation of a part of the body into another one. This term was introduced in 1894 by William Bateson, who aimed to make an inventory of all kinds of biological variation in order to understand how evolution proceeds. But, immediately afterwards experimental embryology, or Entwicklungsmechanik in Germany, adopted and redefined this term to refer to abnormal regenerations in which the newly developed organ was not identical to the initial one but rather resembled another part of the body. At that time, many experimental embryologists, such as Wilhelm Roux, were calling for the elimination of any phylogenetic explanation of development and were attempting to promote more mechanistic, proximate explanations. Despite these recommendations, several biologists continued to account for developmental processes by turning to phylogeny instead of mechanical forces. The case of homeosis is representative. Indeed, abnormal regenerations were often seen as examples of atavisms, or recurrence of ancestral characteristics, and many embryologists appealed to Ernst Haeckel's 'fundamental biogenetic law' to explain these strange phenomena. The break between Haeckelian tradition and Entwicklungsmechanik is thus less radical than often assumed, and the homeosis concept represents one of the factors of this continuity.