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)

This volume provides a broad overview of issues in the philosophy of behavioral biology, covering four main themes: genetic, developmental, evolutionary, and neurobiological explanations of behavior. It is both interdisciplinary and empirically informed in its approach, addressing philosophical issues that arise from recent scientific findings in biological research on human and non-human animal behavior. Accordingly, it includes papers by professional philosophers and philosophers of science, as well as practicing scientists. Much of the work in this volume builds on presentations given (...) at the international conference, “Biological Explanations of Behavior: Philosophical Perspectives”, held in 2008 at the Leibniz Universität Hannover in Germany. The volume is intended to be of interest to a broad range of audiences, which includes philosophers (e.g., philosophers of mind, philosophers of biology, and metaethicists), as well as practicing scientists, such as biologists or psychologists whose interests relate to biological explanations of behavior. (shrink)

The aim of this paper is to show that for Kant, a combination of epigenesis and monogenesis is the condition of possibility of anthropology as he conceives of it and that moreover, this has crucial implications for the biological dimension of his account of human nature. More precisely, I begin by arguing that Kant’s conception of mankind as a natural species is based on two premises: firstly the biological unity of the human species (monogenesis of the human races); and secondly (...) the existence of ‘seeds’ which may or may not develop depending on the environment (epigenesis of human natural predispositions). I then turn to Kant’s account of man’s natural predispositions and show that far from being limited to the issue of races, it encompasses unexpected human features such as gender, temperaments and nations. These predispositions, I argue, are means to the realisation of Nature’s overall purpose for the human species. This allows me to conclude that man’s biological determinism leads to the species’ preservation, cultivation and civilisation. (shrink)

At the end of the nineteenth century, approaches from experimental physiology made inroads into embryological research. A new generation of embryologists felt urged to study the mechanisms of organ formation. This new program, most prominently defended by Wilhelm Roux, was called Entwicklungsmechanik. Named variously as “causal embryology”, “physiological embryology” or “developmental mechanics”, it catalyzed the movement of embryology from a descriptive science to one exploring causal mechanisms. This article examines the specific scientific and epistemological meaning of the mechanistic approaches of (...) embryological development by focusing on Wilhelm His’ histogenetic work. Roux was neither the first, nor the only one to argue for an experimental exploration of causes in embryology. At the time of Roux, physiological explanations of the genesis of the anatomical forms were developing in parallel, not only in German-speaking countries, but in France, Switzerland and English-speaking countries as well. The experimental approach and the cellular descriptions of embryogenesis were already omni-present when Roux proposed his Entwicklungsmechanik. However, these approaches remained disjointed. It appears that it was Wilhelm His who first succeeded in combining the question of the causal factors determining epigenesis, which was closely connected with experimentation on, and cellular descriptions of, development, in a coherent and concrete synthesis, making him one of the true initiators of the developmental mechanics. (shrink)

The aim of this paper is to show that for Kant, a combination of epigenesis and monogenesis is the condition of possibility of anthropology as he conceives of it and that moreover, this has crucial implications for the biological dimension of his account of human nature. More precisely, I begin by arguing that Kant’s conception of mankind as a natural species is based on two premises: firstly the biological unity of the human species (monogenesis of the human races); and secondly (...) the existence of ‘seeds’ which may or may not develop depending on the environment (epigenesis of human natural predispositions). I then turn to Kant’s account of man’s natural predispositions and show that far from being limited to the issue of races, it encompasses unexpected human features such as gender, temperaments and nations. These predispositions, I argue, are means to the realisation of Nature’s overall purpose for the human species. This allows me to conclude that man’s biological determinism leads to the species’ preservation, cultivation and civilisation. (shrink)

Well prior to the invention of the term ‘biology’ in the early 1800s by Lamarck and Treviranus, and also prior to the appearance of terms such as ‘organism’ under the pen of Leibniz in the early 1700s, the question of ‘Life’, that is, the status of living organisms within the broader physico-mechanical universe, agitated different corners of the European intellectual scene. From modern Epicureanism to medical Newtonianism, from Stahlian animism to the discourse on the ‘animal economy’ in vitalist medicine, models (...) of living being were constructed in opposition to ‘merely anatomical’, structural, mechanical models. It is therefore curious to turn to the ‘passion play’ of the Scientific Revolution – whether in its early, canonical definitions or its more recent, hybridized, reconstructed and expanded versions: from Koyré to Biagioli, from Merton to Shapin – and find there a conspicuous absence of worry over what status to grant living beings in a newly physicalized universe. Neither Harvey, nor Boyle, nor Locke (to name some likely candidates, the latter having studied with Willis and collaborated with Sydenham) ever ask what makes organisms unique, or conversely, what does not. In this paper I seek to establish how ‘Life’ became a source of contention in early modern thought, and how the Scientific Revolution missed the controversy. (shrink)

Inheritance and variation were a major focus of Charles Darwin’s studies. Small inherited variations were at the core of his theory of organic evolution by means of natural selection. He put forward a developmental theory of heredity (pangenesis) based on the assumption of the existence of material hereditary particles. However, unlike his proposition of natural selection as a new mechanism for evolutionary change, Darwin’s highly speculative and contradictory hypotheses on heredity were unfruitful for further research. They attempted to explain many (...) complex biological phenomena at the same time, disregarded the then modern developments in cell theory, and were, moreover, faithful to the widespread conceptions of blending and so-called Lamarckian inheritance. In contrast, Mendel’s approaches, despite the fact that features of his ideas were later not found to be tenable, proved successful as the basis for the development of modern genetics. Mendel took the study of the transmission of traits and its causes (genetics) out of natural history; by reducing complexity to simple particulate models, he transformed it into a scientific field of research. His scientific approach and concept of discrete elements (which later gave rise to the notion of discrete genes) also contributed crucially to the explanation of the existence of stable variations as the basis for natural selection. (shrink)

A strong motivation for the human genome project was to relate biological features to the structure and function of small sets of genes, and ideally to individual genes. However, it is now increasingly realized that many problems require a "systems" approach emphasizing the interplay of large numbers of genes, and the involvement of complex networks of gene regulation. This implies a new emphasis on integrative, systems theoretical approaches. It may be called 'holistic' if the term is used without irrational overtones, (...) in the general sense of directing attention to integrated features of organs and organisms. In the history of biology, seemingly conflicting reductionist and holistic notions have alternated, with bottom-up as well as top-down approaches eventually contributing to the solutions of basic problems. By now, there is no doubt that biological features and phenomena are rooted in physico-chemical processes of the molecules involved; and yet, integrated systems aspects are becoming more and more relevant in developmental biology, brain and behavioural science, and socio-biology. -/- . (shrink)

ArgumentThis article investigates the reasons behind the disappearance of Francis Glisson's theory of irritability during the eighteenth century. At a time when natural investigations were becoming increasingly polarized between mind and matter in the attempt to save both man's consciousness and the inert nature of theres extensa, Glisson's notion of a natural perception embedded in matter did not satisfy the new science's basic injunction not to superimpose perceptions and appetites on nature. Knowledgeofnature could not be based on knowledgewithinnature, i.e., on (...) the very knowledge that nature has of itself; or – to look at the same question from the point of view of the human mind – man's consciousness could not be seen as participating in forms of natural selfhood. Albrecht Haller played a key role in this story. Through his experiments, Haller thought he had conclusively demonstrated that the response given by nature when irritated did not betray any natural perceptivity, any inner life, anysentiment interiéur. In doing so, he provided a less bewildering theory of irritability for the rising communities of experimental physiology. (shrink)

I distinguish between ‘substantival’ and ‘functional’ forms of vitalism in the eighteenth century. Substantival vitalism presupposes the existence of a (substantive) vital force which either plays a causal role in the natural world as studied scientifically, or remains an immaterial, extra-causal entity. Functional vitalism tends to operate ‘post facto’, from the existence of living bodies to the search for explanatory models that will account for their uniquely ‘vital’ properties better than fully mechanistic models can. I discuss representative figures of the (...) Montpellier school (Bordeu, Ménuret, Fouquet) as functional rather than substantival vitalists, and suggest an additional point regarding the reprisal of vitalism(s) in the 20th century, from Driesch to Canguilhem: that in addition to the substantival and functional varieties, we encounter a third species of vitalism, which I term ‘attitudinal’, as it argues for vitalism as a kind of attitude. (shrink)

Kant entwickelt in der Kritik der Urteilskraft eine philosophische Ästhetik, eine Theorie der organischen Natur. Die beiden scheinbar heterogenen Gegenstandsbereiche sind durch das Prinzip der reflektierenden Urteilskraft, die Idee der Zweckmäßigkeit, verbunden, die der Mensch sowohl bei der Reflexion über die schönen Gegenstände der Natur und der Kunst als auch bei seiner Erforschung der organischen Natur zugrunde legt. Da sich alle Zwecke zuletzt auf den Endzweck des Menschen als moralisches Wesen beziehen, übersteigt die dritte „Kritik" schließlich die Bereiche von Kunst (...) und Natur und berührt Fragen der Moralphilosophie und der Moraltheologie. Zusätzlich entdeckt Kant im subjektiven Vermögen der Urteilskraft jenes Bindeglied unter den menschlichen Gemütskräften, das einen architektonischen Übergang zwischen den Naturbegriffen des Verstandes in der ersten und dem Freiheitsbegriff der Vernunft in der zweiten „Kritik" ermöglicht und die theoretische und die praktische Philosophie in einem einzigen philosophischen System vereinigt. Der vorliegende kooperative Kommentar bietet eine textnahe, fortlaufende Interpretation der „Kritik der Urteilskraft". Für die 3. Auflage anlässlich des 300. Jubiläums Immanuel Kants wurden alle Beiträge überarbeitet und auf den neuesten Forschungsstand gebracht. Mit Beiträgen von: K. Ameriks, J. Bojanowski, R. Brandt, G. Cunico, M. Foessel, E. Förster, C. Fricke, H. Ginsborg, P. Giordanetti, I. Goy, O. Höffe, A. Kablitz, G. Kohler, S. Mathisen, B. Recki, J. Rivera de Rosales, S. Roth und E. Watkins. (shrink)

Este artículo pretende indagar en la concepción de la locura desarrollada por el filósofo Immanuel Kant a lo largo de su trayectoria intelectual. Para llevar a cabo esta indagación el autor adopta una interpretación naturalizada del transcendentalismo kantiano desarrollada por Eugenio Moya Cantero en sus trabajos sobre el pensador alemán. Se pretende con ello conciliar dos planos de la investigación kantiana que han sido tradicionalmente contrapuestos: facticidad y transcendentalidad, quid facti y quid juris. Este planteamiento ofrece una razón humana situada (...) en el seno de la naturaleza y de su historia y constituida como entidad compleja, heterogénea y dinámica, concepción desde la que la locura aparece como un conflicto de la propia razón consigo misma. El artículo concluye exponiendo el concepto kantiano de sinrazón positiva como la forma más grave de locura y mostrando la influencia y utilidad que dicho concepto ha tenido en otras disciplinas científicas como la psiquiatría contemporánea. (shrink)

If the question ``What is a gene?'' proves to be worth asking it must be able to elicit an answer which both recognizes and address the reasons why the concept of the gene ever seemed to be something worth getting excited about in the first place as well analyzing and evaluating the latest develops in the molecular biology of DNA. Each of the preceding papers fails to do one of these and sufferrs the consequences. Where Rolston responds to the apparent (...) failure of molecular biology to make good on the desideratum of the classical gene by veering off into fanciful talk about ``cybernetic genes,'' Griffiths and Stotz lose themselves in the molecular fine print and forget to ask themselves why ``genes'' should be of any special interst anyway. (shrink)

Historians have often described embryology and concepts of development in the period around 1800 in terms of “temporalization” or “dynamization”. This paper, in contrast, argues that a central epistemological category in the period was “rhythm”, which played a major role in the establishment of the emerging discipline of biology. I show that Caspar Friedrich Wolff’s epigenetic theory of development was based on a rhythmical notion, namely the hypothesis that organic development occurs as a series of ordered rhythmical repetitions and variations. (...) Presenting Christian Heinrich Pander’s and Karl Ernst von Baer’s theory of germ layers, I argue that Pander and Baer regarded folding as an organizing principle of ontogenesis, and that the principle’s explanatory power stems from their understanding of folding as a rhythmical figuration. In a brief discussion of the notion of rhythm in contemporary music theory, I identify an underlying physiological epistemology in the new musical concept of rhythm around 1800. The paper closes with a more general discussion of the relationship between the rhythmic episteme, conceptions of life, and aesthetic theory at the end of the eighteenth century. (shrink)

ArgumentHere 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. (shrink)

Unlike Aristotelian physics with its teleological notions, modern physics was developed exclusively in relation to the nonliving domain. This raised the question as to whether mechanics applies to organisms, and if so, to what extent. From the seventeenth century on, mechanistic ideas became prominent in biological and medical theory. Contemporary biology explains essential features of life on the basis of physical laws and processes. This does not prove, however, that the early mechanists were essentially right. In the eighteenth century, following (...) Cartesian notions of mind-body separation and preformation theories of organismic development, they tended to exclude major biological questions rather than answering them. It was those who insisted on the organizational features of organisms, like Stahl and Wolff, who paved the way for solutions to such crucial problems as the psychological basis of human nature and behavior and the generation of form in the course of reproduction. Though they underrated the potentials of a future, extended physics for understanding biology, their case against reductionist exclusion should not be considered outdated even today. (shrink)

Biological development is about history, the history of an individual through time. Historically, the dominant epigenetic tradition has seen the developmental process as an unfolding of potential or in terms of the emergence of new organization that becomes an individual organism over time. The concept of development has included differentiation, growth, and morphogenesis; since the mid-nineteenth century, it has been seen in terms of cell division. Along the way have come explorations of such issues as the extent to which development (...) is driven by hereditary determination rather than flexible regulation in response to changing conditions. Some researchers have focused specifically on examining the capacity for regeneration in response to injury or loss, or on the extent to which parts are self-organizing individually rather than determined segments of a whole. This paper introduces the historical study of development. (shrink)

In the late 1720s, Daniel Turner and James Blondel engaged in a pamphlet dispute over the power of the maternal imagination. Turner accepted the long-standing belief that a pregnant woman's imagination could be transferred to her unborn child, imprinting the foetus with various marks and deformities. Blondel sought to refute this view on rational and anatomical grounds. Two issues repeatedly received these authors' attention: the identity of imagination, and its power in pregnant women; and the process of generation and foetal (...) development. In their discussions of these issues, differences between the authors' acceptance of general medical theories and philosophies became apparent. Blondel invoked Newtonian matter theory, experimental philosophy, and iatro-mechanism, while Turner adhered more to the authority of the Ancients and advocated a more direct role for the Creator as an alternative to mechanism in explaining natural phenomena. Additionally, the authors held differing views of what they regarded as experience. The widespread contemporary interest in their dispute suggests that Turner and Blondel raised the phenomenon of the maternal imagination from an issue of folk belief to a concern of eighteenth-century medicine. (shrink)

A common object found within medical museums is the developmental series: an arrangement of embryos depicting the transformation of an unremarkable blob into an anatomically organized and recognizable organism. The developmental series depicts a normative process, one where bodies emerge in reliable sequential stages to reveal anatomically perfect beings. Yet a century before the developmental series would become a visual model of embryological development, the very process of development itself was discerned through the comparative study of preserved human fetuses—specifically, those (...) deemed “monstrous” or characterized as “malformations.” This article examines how anatomically diverse fetal bodies were reformulated from singular curiosities into alternative developmental pathways whose characteristics testified to the laws of nature and to the primordial, physical relationship between humans and other species. In early nineteenth century Amsterdam, the father-son team of physicians Gerard and Willem Vrolik built up an internationally renowned anatomical museum famous especially for Willem’s collection of fetal malformations. Physical preparations of fetal malformations play a central role in Willem’s monumental handbook on developmental embryology: comparing human embryos against one another and the embryos of other species, Willem plots out a sequence of embryological development in which a body’s form marks its place within the ever-unfolding natural order. In conversation with the literature on model organisms, this article explores how the “monstrous” gets standardized and, in doing so, contributes to the scientific production of a normative physiological process. (shrink)

This history of reproductive theories from Aristotle to the preformationists provides an excellent illustration of the ways in which the gender /science system informs the process of scientific investigation. In this essay I examine the effects of the bias of woman's inferiority upon theories of human reproduction. I argue that the adherence to a belief in the inferiority of the female creative principle biased scientific perception of the nature of woman's role in human generation.

The ArgumentIn this essay I will sketch a few instances of how, and a few forms in which, the “invisible” became an epistemic category in the development of the life sciences from the seventeenth century through the end of the nineteenth century. In contrast to most of the other papers in this issue, I do not so much focus on the visualization of various little entities, and the tools and contexts in which a visual representation of these things was realized. (...) I will be more concerned with the basic problem of introducing entities or structures that cannot be seen, as elements of an explanatory strategy. I will try to review the ways in which the invisibility of such entities moved from the unproblematic status of just being too small to be accessible to the naked or even the armed eye, to the problematic status of being invisible in principle and yet being indispensable within a given explanatory framework. The epistemological concern of the paper is thus to sketch the historical process of how the “unseen” became a problem in the modern life sciences. The coming into being of the invisible as a space full of paradoxes is itself the product of a historical development that still awaits proper reconstruction. (shrink)

Reconstructions of Romantic-era life science in general, and epigenesis in particular, frequently take the Kantian logic of autotelic “self-organization” as their primary reference point. I argue in this essay that the Kantian conceptual rubric hinders our historical and theoretical understanding of epigenesis, Romantic and otherwise. Neither a neutral gloss on epigenesis, nor separable from the epistemological deflation of biological knowledge that has received intensive scrutiny in the history and philosophy of science, Kant’s heuristics of autonomous “self-organization” in the third Critique (...) amount to the strategic capture of epigenesis from nature, for thought, in thought’s critical transcendence of nature. This essay looks to Jean-Baptiste Lamarck and his English contemporary Erasmus Darwin to begin to reconstruct the rigorously materialist, naturalist, and empiricist theories of epigenesis marginalized by Kantian argumentation. As theorists of environmental and social collaboration in the ontogeny of viable forms, Lamarck and Darwin illuminate features of our own epigenetic turn obscured by the rhetoric of “self-organization,” allowing us to glimpse an alternative Romantic genealogy of the biological present. (shrink)

In diesem Artikel geht es um die historische und konzeptuelle Entwicklung von Charles Bonnets (1720-1793) allgemeiner Systemtheorie organismischer Ordnung. Hierfür wird der Kontext von Bonnets Ansatz in Naturgeschichte und Philosophie rekonstruiert. Leitfaden zur Analyse von Bonnets Systemtheorie bildet das Problem der doppelten Verortung des Organischen: Zum einen unterscheiden sich organisierte Körper durch ihre Ordnungsform von allen nicht organisierten Körpern, und zum anderen reihen sie sich zusammen mit den nicht-organisierten Körpern in eine Stufenleiter der Wesen ein, die von den Elementen bis (...) zum Menschen reicht und Mineralien, Pflanzen und Tiere umfasst. Anhand dieser Problemstellung wird eine Interpretationsebene entwickelt, die es erlaubt, Bonnets Ansatz einer bestimmten Transformation zwischen klassischer Metaphysik und Naturgeschichte zuzuordnen. The article focuses on the historical and conceptual development of Charles Bonnet's (1720-1793) general system theory of organismic order. The context of Bonnet's work will be reconstructed in natural history and philosophy. The problem of the double position of organic bodies is central for the understanding of Bonnet's theory: On the one hand, organized bodies are different from all non-organized bodies, and on the other hand, organized and non-organized beings form a single scale of beings that reaches from the elements to minerals, plants, animals and humans. This problematic setting will be characterized as a specific transformation between classical metaphysics and natural history. (shrink)

This history of reproductive theories from Aristotle to the preformationists provides an excellent illustration of the ways in which the gender/science system informs the process of scientific investigation. In this essay I examine the effects of the bias of woman's inferiority upon theories of human reproduction. I argue that the adherence to a belief in the inferiority of the female creative principle biased scientific perception of the nature of woman's role in human generation.

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)

The author has retracted this article as it contains sections that substantially overlap with the following publications.

In conjunction with the growing feminist literature on pregnancy and visualization, this paper uses Foucault’s The Birth of the Clinic to demonstrate how the effort to make the interior of the pregnant body visible in medical discourse was a crucial part of the development of the modern medical gaze. In doing so I develop two concurrent arguments. First, I argue that the pathological corpse of the Clinic can conceptually serve as a double for the pregnant body as it emerged in (...) modern medicine in the 20th century. At the same time I use the insights of the Clinic to illustrate changes in pregnancy from early modernity to the 20th century. In early modernity, the pregnant body was understood in terms of generation, as a tree that bears fruit; by the 19th century, the pregnant body was a machine that reproduced the species. This transition can be seen in the overlap of pathology and pregnancy in early modernity, an overlap that continued throughout the 19 century and is inadvertently reinforced through the practice of ultrasound. (shrink)

O conceito de força exerceu um papel central nas transformações que ocorreram na ciência física na passagem do século XVII para o século XVIII. A forte reação ao sistema mecanicista elaborado por Descartes, no qual não havia propriamente um lugar para esse conceito, levou ao surgimento das teorias dinâmicas que, tais como as de Leibniz e Newton, tiveram forte influência no desenvolvimento da história natural setecentista. Uma vez que a biologia se constituiria como um conjunto autônomo de conhecimentos apenas cem (...) anos mais tarde, a partir das obras de Lamarck e Darwin, os naturalistas daquela época buscavam ainda os meios de circunscrever e determinar o domínio específico dos fenômenos vitais. Nesse sentido, muitos deles importaram a noção de força da física clássica para suas teorias, a fim de que pudessem de algum modo determinar, ainda que mediante uma simples analogia, o elemento "incognoscível" da natureza orgânica. (shrink)

Early in his career Thomas Hunt Morgan was interested in embryology and dedicated his research to studying organisms that could regenerate. Widely regarded as a regeneration expert, Morgan was invited to deliver a series of lectures on the topic that he developed into a book, Regeneration. In addition to presenting experimental work that he had conducted and supervised, Morgan also synthesized and critiqued a great deal of work by his peers and predecessors. This essay probes into the history of regeneration (...) studies by looking in depth at Regeneration and evaluating Morgan’s contribution. Although famous for his work with fruit fly genetics, studying Regeneration illuminates Morgan’s earlier scientific approach which emphasized the importance of studying a diversity of organisms. Surveying a broad range of regenerative phenomena allowed Morgan to institute a standard scientific terminology that continues to inform regeneration studies today. Most importantly, Morgan argued that regeneration was a fundamental aspect of the growth process and therefore should be accounted for within developmental theory. Establishing important similarities between regeneration and development allowed Morgan to make the case that regeneration could act as a model of development. The nature of the relationship between embryogenesis and regeneration remains an active area of research. (shrink)

The aim of this work is to present the thesis “On the Ontogenetic Evolution of the Human Embryo in its Relations with Phylogenesis,” by Affonso Regulo de Oliveira Fausto, published in Brazil in 1890. To our knowledge, it was one of the first Brazilian academic works focused specifically on evolution. It was also the first doctoral thesis that addressed the topic of recapitulation in order to analyze what was then called the progressive evolution of the human species in tandem with (...) the embryological development of the individuals that would constitute the Brazilian “type.” In the present work, we analyze the author’s thesis in relation to its sources, concepts, as well as the country’s political context at the time of its publication. Fausto’s text, in which he explicitly recognized the influence of Ernst Haeckel’s recapitulation theory, represents a window to understand better a concept of nation based on science and on the idea of inexorable progress that was accepted in Brazil at the end of the nineteenth century. (shrink)