Lacepède was a key figure in the French intellectual world from the Old Regime to the Restoration, since 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. (shrink)

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 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. (shrink)

Species are generally considered to be the basic units of evolution, and hence to constitute spatio-temporally bounded entities. In addition, it has been argued that species also instantiate a natural kind. Evolution is fundamentally about change. The question then is how species can remain the same through evolutionary change. Proponents of the species qua individuals thesis individuate species through their unique evolutionary origin. Individuals, or spatio-temporally located particulars in general, can be bodies, objects, events, or processes, or a combination of (...) these. It is here argued that species are best understood as open or closed, causally integrated processual systems that also instantiate an historically conditioned homeostatic property cluster natural kind. (shrink)

Posthumanist and New Materialist thought attempts to undo the supremacy and distinction of the human being through accounting for the agential capacities of the animal and material world. New Materialism in particular constructs a vision of a vital natural world in order to turn us away from humanism and toward a more holistic understanding of nature, and political actants. In this article, I argue that there can be a humanist new materialist position that sees the vitalism of the natural world (...) while maintaining the uniqueness of the human being. This position can be found in the natural science of the eighteenth century in the work of Georges-Louis LeClerc de Buffon and Charles Bonnet. Reminding ourselves of this alternative mode of thinking about a vital nature, and its vision of a self-regenerating human being in a vital and regenerative universe, is a path toward regenerating humanism itself in contemporary scholarship. (shrink)

In this paper, we reflect on the connection between the notions of organism and organisation, with a specific interest in how this bears upon the issue of the reality of the organism. We do this by presenting the case of Buffon, who developed complex views about the relation between the notions of “organised” and “organic” matter. We argue that, contrary to what some interpreters have suggested, these notions are not orthogonal in his thought. Also, we argue that Buffon has a (...) view in which organisation is not just ubiquitous, but basic and fundamental in nature, and hence also fully natural. We suggest that he can hold this view because of his anti-mathematicism. Buffon’s case is interesting, in our view, because he can regard organisation, and organisms, as perfectly natural, and can admit their reality without invoking problematic supernaturalist views, and because he allows organisation and the organismal to come in kinds and degrees. Thus, his view tries to do justice to two cautionary notes for the debate on the reality of the organism: the need for a commitment to a broadly naturalist perspective, and the need to acknowledge the interesting features of organisms through which we make sense of them. (shrink)

In this paper, I argue that Kant adopted, throughout his career, a position that is much more akin to classical accounts of epigenesis, although he does reject the more radical forms of epigenesis proposed in his own time, and does make use of preformationist sounding terms. I argue that this is because Kant thinks of what is pre-formed as a species, not an individual or a part of an individual; has no qualm with the idea of a specific, teleological principle (...) or force underlying generation, and conceives of germs and predispositions as specific constraints on such a principle or force. Neither of these conceptions of what is “preformed”, I argue, is in strict opposition to classical epigenesis. I further suggest that Kant’s lingering use of preformationist terminology is due to his belief that this is required to account for the specificity of the specific generative force; his resistance towards the unrestricted plasticity of the generative force in radical epigenesis, which violates species-fixism; and his insistence on the internal, organic basis of developmental plasticity and variation within species. I conclude by suggesting that this terminological and interpretative peculiarity is partly due to a larger shift in the natural philosophical concerns surrounding the debate on epigenesis and preformation. Specifically, it is a sign that the original reasons for resisting epigenesis, namely its use of specific, teleological principles and its commitment to the natural production of biological structure, became less of a concern, whereas unrestricted plasticity and its undermining of fixism became a real issue, thereby also becoming the focal point of the debate. (shrink)

In this paper, I argue that Kant adopted, throughout his career, a position that is much more akin to classical accounts of epigenesis, although he does reject the more radical forms of epigenesis proposed in his own time, and does make use of preformationist sounding terms. I argue that this is because Kant (1) thinks of what is pre-formed as a species, not an individual or a part of an individual; (2) has no qualm with the idea of a specific, (...) teleological principle or force underlying generation, and conceives of germs and predispositions as specific constraints on such a principle or force. Neither of these conceptions of what is “preformed”, I argue, is in strict opposition to classical epigenesis. I further suggest that Kant’s lingering use of preformationist terminology is due to (1) his belief that this is required to account for the specificity of the specific generative force; (2) his resistance towards the unrestricted plasticity of the generative force in radical epigenesis, which violates species-fixism; and (3) his insistence on the internal, organic basis of developmental plasticity and variation within species. I conclude by suggesting that this terminological and interpretative peculiarity is partly due to a larger shift in the natural philosophical concerns surrounding the debate on epigenesis and preformation. Specifically, it is a sign that the original reasons for resisting epigenesis, namely its use of specific, teleological principles and its commitment to the natural production of biological structure, became less of a concern, whereas unrestricted plasticity and its undermining of fixism became a real issue, thereby also becoming the focal point of the debate. (shrink)

The 17th and 18th centuries were the theatre of the fight between two main theories concerning the development of organisms: preformationism (or preformism) and epigeneticism (or epigenesis). According to the first, the formation of new features during organisms’ development can be seen as the result of a mere unfolding of features that were preformed in the sperm, the egg, or the zygote. According to epigeneticism, there is no pre-existing form, and development is a process where genuinely new characters emerge from (...) formless matter. The debate involved naturalists, anatomists, physiologists, microscopists, medical doctors, and philosophers as well. Current developmental biology is, according to some, still inspired (or haunted) by the age-old controversy. The aim of this contribution is twofold. First, to discuss in which guise, if any, the old controversy is still shaping the contemporary debate in biology and philosophy of biology; and, second, to sketch Schelling’s position on that debate, suggesting that it may contain some still valuable philosophical insight. (shrink)

Richard Owen has been condemned by Darwinians as an anti-evolutionist and an essentialist. In recent years he has been the object of a revisionist analysis intended to uncover evolutionary elements in his scientific enterprise. In this paper I will examine Owen's evolutionary hypothesis and its connections with von Baer's idea of divergent development. To give appropriate importance to Owen's evolutionism is the first condition to develop an up-to-date understanding of his scientific enterprise, that is to disentagle Owen's contribution to the (...) modernization of typology and morphology. I will argue that Owen's Platonic essentialism is rhetorical and incongruous. On the contrary, an interpretation of the archetype based on Aristotle's biological works makes possible a new conception of type, based on a homeostatic mechanism of stability. The renewal of morphology hinges on homological correspondences and a homeostatic process is also the origin of serial and special homology. I will argue that special homology shows an evolutionary orientation insofar as it is a typically inter-specific character while serial homology is determined through an elementary usage of the categories of developmental morphology. (shrink)

This paper seeks to characterize how the study of nutrition processes contributed to revisit the problem of vital organization in the late eighteenth century. It argues that focusing on nutrition leads to reformulate the problem of the relation between life and organization in terms of processes, rather than static or given structures. This nutrition-centered approach to life amounts to acknowledge the specific strategic role nutrition played in the development of a materialist approach to the generation of vital organization. The paper (...) proposes a clarification of the multiple meanings of the concept of organization in the context of Enlightenment physiology and nascent biology, before focusing on the century long analogy between nutrition and generation. It shows how, by contrasting different uses of this analogy, nutrition was employed as a key vital phenomenon in the development of epigenetic theories of generation, i.e. how a nutritive modeling of generation was used in the undermining of preformationism. To this purpose I contrast two seemingly opposite theories of generation, Buffon’s and Bonnet’s, and show that despite the obvious metaphysical discontent, their views of generation share a common mechanical conceptual frame in which nutrition is conflated with growth and repair. I then turn to the role nutrition played in the epigenetic conception of generation in C. F. Wolff’s embryology and analyze this rival understanding of nutrition as an organizing process. (shrink)

The concept of adaptation is employed in many fields such as biology, psychology, cognitive sciences, robotics, social sciences, even literacy and art,1 and its meaning varies quite evidently according to the particular research context in which it is applied. We expect to find a particularly rich catalogue of meanings within evolutionary biology, where adaptation has held a particularly central role since Darwin’s The Origin of Species (1859) throughout important epistemological shifts and scientific findings that enriched and diversified the concept. Accordingly, (...) a conceptual taxonomy of adaptation in evolutionary biology may help to disambiguate it. Interdisciplinary researches focused on adaptation would benefit from such a result. In the present work we recognize and define seven different meanings of adaptation: (1) individual fitness; (2) adaptation of a population; (3) adaptation as the process of natural selection; (4) adaptive traits; (5) molecular adaptation; (6) adaptation as structural tinkering; (7) plasticity. For convenience here, we refer to them as W-, P-, NS-, T-, M-, S- and PL-ADAPTATION. We present the seven meanings in some detail, hinting at their respective origins and conceptual developments in the history of evolutionary thought (references are offered for further deepening). However, it is important to point out that evolution researchers seldom if ever refer to a single meaning purified from the others. This applies also to the authors we cite as representatives of one of the seven meanings. In Discussion and Conclusion draw from our work some future perspectives for adaptation within evolutionary biology. (shrink)

While historians of the microscope currently consider that no programme of microscopy took place during the Enlightenment, the thesis challenges this view and aims at showing when and where microscopes were used as research tools. The focus of the inquiry is the research on microscopic animalcules and the relationship of European microscope making and practices of microscopy with topical trends of the industrial revolution, such as quantification. Three waves of research are characterised for the research on animalcules in the Enlightenment: (...) 1. seventeenth-century observations on animalcules crowned by Louis Joblot's 1718 works in the milieu of Paris Académie royale des sciences, 2. mid eighteenth-century observations and experiments on polyps and animalcules (Trembley, Baker and Hill) and, 3. between 1760 and 1790, OF Müller's establishment of the systematics of infusoria in Denmark and Germany. (shrink)