Caspar Friedrich Wolff (1734-1794). Koncepcja epigenezy a problem samorództwa

• Autorzy: Bednarczyk A.

Warianty tytułu

EN

Caspar Friedrich Wolff (1734-1794). The concept of epigenesist and the problem of spontaneous generation

• Języki publikacji: PL

Abstrakty

EN

The link between the notion of epigenesis and that of spontaneous generation does not seem complicated when it is viewed in theoretical terms or when it is approached in a pure model form. However, once any of its particular manifestations in the history of biology is analysed, the interrelationship between the two notions ceases to be unequivocal. One example of that comes with the first fully-fledged concept of epigenesis, based on careful observation of embryonic development, presented by Caspar Friedrich Wolff in the 18th century. The process of development that an act of spontaneous generation has given rise to cannot, of course, be anything else but one of epigenesis. In this sense, epigenesis constitutes a necessary condition for spontaneous generation, but is not a sufficient condition, i.e. not every process of development through epigenesis has at its source an act of spontaneous generation. Evidence that Wolff was inclined towards the concept of spontaneous generation comes from the presence in his works of a notion described by the Latin term ortus (emergence). That notion - together with that of an organic body - is subject to detailed analysis in the current paper. If the process of spontaneous generation is understood as a process of emergence in nature of what is animate and organic, from what is inanimate and non-organic, and as a process in which living beings are not involved, but a living being is its outcome, then the notion of ortus is close in meaning to the notion of spontaneous generation. However, the deistic and theological philosophical foundation of Wolff’s concept of epigenesis is in conflict with the notion of spontaneous generation. It seems that Wolff’s notion of ortus can be interpreted in two ways. Firstly, it can be interpreted as as result of the theoretical extrapolation in time applied by Wolff to the usual way in which organic bodies emerge (the process is always given rise to by a nonorganic body, supplied by another organic body), all the way back to that the distant moment when the first organic body in time was to emerge; this extrapolation has been reconstructed in detail in the current paper. Secondly, the notion of ortus can be also interpreted as a special kind of heterogenesis, a process which is given rise to by an organic body, but which produces living beings that do not deserve the name of organic bodies - beings that are poorly differentiated in terms of morphology and organization, and thus devoid of distinct species membership, such as simple algae, moulds, internal parasites etc. If that is a correct interpretation, then in neither case would Wolff’s ideas have anything to do with real spontaneous generation in the strict sense.

Słowa kluczowe

PL

epigeneza; samorództwo; biologia rozwoju

EN

epigenesis; abiogenesis; developmental biology

• Wydawca: Instytut Historii Nauki im. L. i A. Birkenmajerów Polskiej Akademii Nauk
• Czasopismo: Kwartalnik Historii Nauki i Techniki
• Rocznik: 2005
• Tom: R. 50, nr 3/4
• Strony: 59--86
• Opis fizyczny: Bibliogr. 16 poz.

Twórcy

autor

Bednarczyk A.

• Instytut Filozofii Uniwersytetu Warszawskiego

Bibliografia

• A. Bednarczyk: Filozofia biologii europejskiego Oświecenia. Albrecht von Haller i jego współcześni. Warszawa 1984, s. 244-283, 437-443.
• A.E. Gajsinovic: K.F. Volfi ućenie o razvitii organizmov (v svjazi s obśćej evoljuciej naućnogo mirovozzrenija). Moskva 1961.
• S.A. Roe: Matter, life, and generation. Eighteenth-century embryology and the Haller-Wolff debate. Cambridge 1981.
• A. von Haller: Anfangsgründe der Physiologie des menschlichen Körpers. Bd. 8. Berlin-Leipzig 1776, s. 191.
• A.E. Gajsinovic : Primećanija ineopublikovannye teksty, s. 483-616, w: K.F. Vo1’f : Teorija zaroźdenija. Moskva 1950.
• J.G. Gleditsch: Relation de la fécondation artificielle d'un palmier femelle, réitérée pour la troisièmefois, et avec un plein succès, dans le jardin botanique de l'Académie Royale a Berlin, s. 3-19, w: Histoire de l'Académie Royale des Sciences et des Belles-Lettres de Berlin. 1767. Berlin 1769.
• K.E. von Baer: Über den litter arischen Nachlass von Caspar Friedrich Wolff ehemaligen Mitgliede der Akademie der Wissenschaften zu St. Petersburg, „Bulletin de la classe physico-mathématique de l'Académie Impériale des Sciences de St.-Pétersbourg" 5 (1847), 9-10 [105-106], szp. 129-160; szp. 139.
• A. Bednarczyk: Filozofia biologii europejskiego Oświecenia, s. 195-243, 434-437.
• F. Redi : Esperienze intorno alla generazione degl' insetti. Firenze 1668.
• R. Horwitz Westbrook: Needham, John Turberville, s. 9-11, [w:] Ch.C. Gillispie , ed.: Dictionary of scientific biography. Vol. 10. New York 1974, s. 10.
• Shirley A. Roe: John Turberville Needham and the generation of living organisms, „Isis" 74 (1983), 272, s. 159-184.
• Shirley A. Roe: Voltaire versus Needham. Atheism, materialism and the generation of life, „Journal of the History of Ideas" 46 (1985), 1, s. 65-87).
• A. Bednarczyk: Filozofia biologii europejskiego Oświecenia, s. 226-239.
• RJ. Cole: Early theories of sexual generation. Oxford 1930, s. 136-140).
• J.M.G. Beseke : Versuch einer Geschichte der Hypothesen über die Erzeugung der Tiere wie auch einer Geschichte des Ursprungs der Einteilung der Naturkörper in drei Reiche. Mitau 1797, s. 70-71).
• J.G. Bremser: Über lebende Würmer im lebenden Menschen. [...] Nebsteinem Anhange über Pseudo-Helminthen. Wien 1819, s. 1-66.