The species of vitalism discussed here is a malleable construct, often with a poisonous reputation (but one which I want to rehabilitate), hovering in between the realms of the philosophy of biology, the history of medicine, and the scientific background of the Radical Enlightenment (case in point, the influence of vitalist medicine on Diderot). This is a more vital vitalism, or at least a more ‘biologistic,’ ‘embodied,’ medicalized vitalism. I distinguish between what I would call ‘substantival’ and ‘functional’ forms of (...) vitalism, as applied to the eighteenth century. Substantival vitalism presupposes the existence of something like a (substantive) vital force which either plays a causal role in the natural world as studied by scientific means, or remains a kind of hovering, extra-causal entity. Functional vitalism tends to operate “post facto,” from the existence of living bodies to the desire to find explanatory models that will do justice to their uniquely ‘vital’ properties in a way that fully mechanistic models (such as Cartesian mechanism) cannot. I discuss some representative figures of the Montpellier school as being functional rather than substantival vitalists, particularly as regards the models of organic organization which they develop, and make some suggestions as to how these relate to the then-nascent science of biology. (shrink)

As a historical figure, Lamarck proves a rather difficult subject. His writings give us few explicit leads to his intellectual debts; nor do they present his theories as the outcome of any sustained course of observations or experimental research; and, what is equally frustrating, it is hard to see how his personal development as a scientific theorist was affected by the dramatic political and social upheavals of the period, in which he took an active and lively interest. And so, with (...) his importance for later writers much clearer than his relationship to those of his own and earlier ages, historians have repeatedly interpreted his works as prophetic of doctrines developed more fully by subsequent generations. No less surprisingly, this facile tactic has provoked a reaction; we have been offered Lamarck as a Stoic, a romantic, harking back to Heraclitus. (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)

The theoretical system Lyell presented in 1830 was composed of three requirements or principles: 1) the Uniformity Principle which states that past geological events must be explained by the same causes now in operation; 2) the Uniformity of Rate Principle which states that geological laws operate with the same force as at present; 3) the Steady-state Principle which states that the earth does not undergo any directional change. The three principles form a single thesis called uniformitarianism which has been repeatedly (...) questioned and which has been reputed to be unable to face the competing directional synthesis based on the theory of the earth's cooling down. As a result, the significance of Lyell's system has been reduced to a simple actualism which admits the validity of the only Uniformity Principle. I believe that the only way to understand Lyell's role in the history of science is to maintain the unity of his synthesis. To show the Newtonian roots of this synthesis I will compare Lyell's principles and Newton's Rules of Reasoning. I will conclude with an analysis of the methodological function of principles in Lyell's scientific endeavour. (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 category of ‘organism’ has an ambiguous status: is it scientific or is it philosophical? Or, if one looks at it from within the relatively recent field or sub-field of philosophy of biology, is it a central, or at least legitimate category therein, or should it be dispensed with? In any case, it has long served as a kind of scientific “bolstering” for a philosophical train of argument which seeks to refute the “mechanistic” or “reductionist” trend, which has been perceived (...) as dominant since the 17th century, whether in the case of Stahlian animism, Leibnizian monadology, the neo-vitalism of Hans Driesch, or, lastly, of the “phenomenology of organic life” in the 20th century, with authors such as Kurt Goldstein, Maurice Merleau-Ponty, and Georges Canguilhem. In this paper I try to reconstruct some of the main interpretive ‘stages’ or ‘layers’ of the concept of organism in order to critically evaluate it. How might ‘organism’ be a useful concept if one rules out the excesses of ‘organismic’ biology and metaphysics? Varieties of instrumentalism and what I call the ‘projective’ concept of organism are appealing, but perhaps ultimately unsatisfying. (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)