
	Where results make sense

Topic: Hans Driesch

Related Topics

Philosopher

Surigao del Sur

	Hans Adolf Eduard Driesch - Wikipedia, the free encyclopedia
		Hans Adolf Eduard Driesch (October 28, 1867 - April 16, 1941) was a German biologist and philosopher.
		Driesch had demonstrated by experiment in 1895, that it was possible to remove large pieces from eggs, such as shuffling the blastomeres at will or taking some away and thus interfere in many ways, yet not affect the resulting embryo.
		Using Aristotle's philosophy Driesch proposed the autonomy of life was introduced by way of entelechy, but this idea met with violent opposition.
	en.wikipedia.org /wiki/Hans_Driesch (209 words)

	Driesch, Hans Adolf Eduard - HighBeam Encyclopedia (Site not responding. Last check: 2007-10-10)
		Driesch, Hans Adolf Eduard, 1867-1941, German philosopher, b.
		This contradicted then-current mechanistic theories and led Driesch to develop a theory of vitalism, explaining organic systems in terms of a mysterious self-determining principle rather than in physical or chemical terms.
		Driesch joined the Univ. of Heidelberg's philosophy faculty in 1912 and while there wrote Theory of Order (1912), Logic as a Task (1913), and Theory of Reality (1917).
	www.encyclopedia.com /doc/1E1-driesch.html (230 words)

	Hans Adolf Driesch Biography \| World of Genetics
		The work of Hans Driesch work was a critically important antecedent to the animal cloning experiments of the late 20th century.
		The fact that Driesch got whole organisms from half embryos caused him to seriously doubt the prevailing notion that life could be explained in terms of physics and chemistry.
		Because of this, Driesch adopted a vitalistic view of development, becoming one of the last proponents of vitalism, which proposed that the principles of physics and chemistry are inadequate to explain living phenomena and therefore, there must be a vital force or "entelechy" which guides development.
	www.bookrags.com /biography/hans-adolf-driesch-wog (490 words)

	Hans Adolph Eduard Driesch Biography \| World of Biology
		Hans Driesch was born in Bad Kreuzsnach, Germany.
		Driesch's work is especially remembered because it was a critically important antecedent to the animal cloning experiments of the late 20th century.
		Driesch abandoned experimental embryology altogether and spent his later years in philosphy.
	www.bookrags.com /biography/hans-adolph-eduard-driesch-wob (514 words)

	Hans Driesch
		Driesch schreibt: "Harmonisch-äquipotentielle Systeme nenne ich solche in der Embryologie oder bei der Wiederherstellung der gestörten Organisation (Restitution) auftretenden Zellgesamtheiten, für deren organisatorische Leistung es nichts ausmacht, ob man ihnen beliebige Teile nimmt oder ihre Teile beliebig verlagert." (H. Driesch: Mein System und sein Werdegang, 52).
		Der Ursachverhalt besteht nach Driesch aus drei Bestandteilen: (1) 'Ich, der um sein Wissen Wissende' (2) 'habe bewusst' (3) 'Etwas'.
		Driesch zeichnete das Bild einer künftigen geistigen Gemeinschaft der Menschheit, die auf den durch alle Völker erarbeiteten kulturellen Traditionen aufbaue und über den Völkerbund zum Menschheitsstaat entwickelt werden müsse.
	www.philosophenlexikon.de /driesch.htm (1122 words)

	Mystery of Matter, Chapter 7
		Driesch had carried out a whole series of experiments on the embryos of sea urchins, dividing them in various ways and in various stages of their development with a variety of methods, and he had watched these fragments give rise to normal adults, although of reduced size.
		Driesch called it factor E, which can be considered the final end of the organism, or its morphic field in Sheldrake's terms.
		His vitalism is not one in which the vital principle intervenes in the phenomenon of the organism as an efficient cause would, but it is an "immanent principle of specific determination in itself simple and unextended" which determines the living body in its very being as a substantial form.
	www.innerexplorations.com /catchmeta/mys7.htm (3026 words)

	Driesch-Morgan Collection, American Philosophical Society
		The developmental biologist and ardent vitalist Hans Driesch was born on October 28, 1867, in Bad Kreuznach, Germany.
		Between 1891 and 1900, Driesch worked at the International Zoological Station in Naples, Italy, where he met performed a renowned series of experiments on sea urchin embryos that conclusively demonstrated that the fate of a cell is not determined in the early developmental stages and, in 1896, he became the first to demonstrate embryonic induction.
		After serving as the Gifford lecturer at Aberdeen in 1907-1908, Driesch was appointed professor of philosophy at Heidelberg (1911-20), and subsequently at Cologne and Leipzig.
	www.amphilsoc.org /library/mole/d/driesch.htm (372 words)

	UNSW Embryology- Development History- Nobel Lecture 1935 - Hans Spemann
		Below is the transcript from the Nobel Lecture 1935 given by Hans Spemann (1869 - 1941) a german embryologist.He worked extensively on amphibian development and was the discoverer of the organiser region (or primitive node) the controller of gastrulation.
		The experiments which finally led to the discovery of the phenomena which are now designated as "organizer-effect" were prompted by a question which actually goes back to the beginnings of developmental mechanics, indeed to the beginnings of the history of evolution in general.
		Driesch, on the other hand, took a sea-urchin's egg, separated one segmental cell from the other and obtained a smaller but complete embryo.
	embryology.med.unsw.edu.au /history/page1935.htm (4949 words)

	RECENT PHILOSOPHY: Other Contemporary Philosophers
		A discovery made in 1895 by Hans Driesch (picture) attracted international attention and firmly placed him among the important figures in the history of biology.
		Driesch, by experiment, demonstrated that it was possible to remove large pieces from eggs; shuffle the blastomeres at will; take several blastomeres away; interfere in many ways, and yet not affect the resulting embryo.
		Driesch was converted to vitalism because he believed that physical laws were insufficient to explain his discovery, which he declared to be beyond the powers of any machine ever constructed by man. Thus far, he encountered no objections.
	radicalacademy.com /adiphicontemphilosophers3.htm (4099 words)

	A Baby's Hair
		Hans Spemann was in a foul mood as he rearranged his blankets.
		Driesch convinced himself (if few others) that these results implied the existence of vital spirits.
		Hans Spemann and Hilde Mangold wrote up their paper — and electrified the biology community.
	www.scienceforpeople.com /Essays/baby_hair.htm (3742 words)

	ISS: Biography of Hans Driesch
		HANS DRIESCH, biologist and philosopher, when working at the Marine Zoology Station at Naples in the 1890s carried out an odd experiment with a sea-urchin's egg.
		Driesch also suggested that 'the mind may carry out a morphogenetic action at a distance'.
		Driesch contributed to many periodicals in Europe and America, as to the Society's publications; his paper on 'Memory and its Relation to Psychical Research' (Proceedings 43, 1935) opened up a field tentatively explored nearly fifty years later by Dr Susan Blackmore.
	www.survivalafterdeath.org /researchers/driesch.htm (489 words)

	Morphic Fields (Site not responding. Last check: 2007-10-10)
		The field concept in biology has its origin in the work of Hans Driesch, although the concept itself was elaborated by A. Gurwitsch and P. Weiss.
		Driesch demonstrated that, contrary to the Roux-Weismann hypothesis, each cell of a sea urchin embryo, when isolated at the two-cell stage, does not produce a half-embryo but a complete, miniature pluteus larva of normal form.
		These experiments involve the isolation and transplantation of the material of developing organisms, that is, changing the spatial relations of the material, and lead to the aphorism "Developmental fate is a function of position." Thus it would seem that the morphogenetic field causes changes in the properties of the material.
	www.christianhubert.com /hypertext/Morphic_Fields.html (620 words)

	Bibliographic Essays: Life Sciences in the Twentieth Century
		Secondary material on Wilhelm Roux, Hans Driesch, and early experimentation is not as plentiful as the subject demands.
		A significant issue in the Roux-Driesch controversy was the old seventeenth- and eighteenth-century debate over epigenesis and preformation--whether the embryo develops by organizing less-formed material into the structure of embryonic parts (epigenesis) or merely grows in size from an already-formed, miniature adult (preformation).
		An informative and insightful study of that controversy, from Roux and Driesch to twentieth-century figures such as C. Whitman, E. Wilson, and E. Conklin, is Maienschein's "Preformation or New Formation--or Neither or Both?" in A History of Embryology, edited by T.J. Herder, J. Witkowski, and C.C. Wylie (Cambridge: Cambridge Univ. Press, 1986), pp.
	www.hssonline.org /teach_res/essays/allen/allenp2.html (627 words)

	Developmental Biology, Historical Roots of
		Embryologists became disillusioned with genetics and preoccupied themselves with describing development and experimenting on the interactions and rearrangements of the cells and tissues that form embryos.
		A remarkable series of experiments conducted by the German embryologist Hans Spemann and his student Hilde Mangold in 1924 fired the imagination of embryologists and spawned a new era of embryological investigation that was truly the heyday of embryology.
		The roles of key individuals such as E.B. Wilson, Wilhelm Roux, Hans Driesch, Theodor Boveri and T.H. Morgan should be understood.
	www.acs.ucalgary.ca /~browder/roots.html (1246 words)

	Vitalism
		The most notable is Hans Driesch (1867–1941), an eminent embryologist, who explained the life of an organism in terms of the presence of an entelechy, a substantial entity controlling organic processes.
		In 1891, Driesch performed what seemed at first to be a very similar experiment, but with dramatically different results.
		The connections were not immediately made, but Driesch was eventually led to a teleological and vitalistic view of development which he thought could explain developmental patterns.
	mechanism.ucsd.edu /~bill/teaching/philbio/vitalism.htm (2823 words)

	Biology 104 Spring 2005
		Later, someone did the reverse of Driesch's experiment, and pushed together two urchin eggs at the one-celled stage, with the result that they developed into a double sized pluteus larva.
		Driesch was so surprised by the results that he believed that the control mechanism must be nearly supernatural, not mechanistic, and that each embryo must contain an "entelchy" (a sort of vital spirit that controlled things).
		Driesch's results (that is, the occurance of embryonic regulation) disproved this false interpretation of Roux's "hot needle" experiment.
	www.bio.unc.edu /faculty/harris/Courses/biol104/jan26.html (1212 words)

	New Page 0 (Site not responding. Last check: 2007-10-10)
		The theory behind regulative development originated in 1892 when Hans Driesch performed isolation experiments on sea urchins.
		In the end, Driesch determined that individual blastomeres have a prospective potency to develop into every kind of cell in the adult organism.
		This is what is referred to as totipotency of a cell and it has led to much research since his time (Driesch 1892).
	www.trnty.edu /faculty/boomsma/development/VanTil/Introduction.htm (253 words)

	Amazon.com: "Hans Spemann": Key Phrase page (Site not responding. Last check: 2007-10-10)
		For example, the first project which Hans Spemann was assigned as a student during the 1890s was a descriptive one because his Doktorvater (...
		Also, Harrison's associations with Hans Spemann, the German worker on the "organizer" in amphibian development, and with Paul Weiss illustrate the role of paradigm communities sketched...
		Even the most famous experimental embryologist of all time, Hans Spemann, a contemporary of Driesch, was undecided about vitalism.
	www.amazon.com /phrase/Hans-Spemann (530 words)

	Morphogenesis, Seidel's legacy for developmental biology and challenge for molecular embryologists (Site not responding. Last check: 2007-10-10)
		Theses experiments defined the enigmatic property of 'regulation', first discovered by Hans Driesch (1892), when isolated blastomeres of 2- and 4-cell sea urchin embryos 'regulated' into normal, just smaller pluteus larvae.
		This remarkable behavior was evidence for Driesch that the embryo is a 'harmonious equipotential system', inaccessible to analysis and controlled by a vital force.
		However, Theodor Boveri found, from the developmental restriction of blastomeres of the 8-cell stage and already of the one-celled embryo after cutting it into an animal and a vegetal half, that this system is not equipotent.
	www.ijdb.ehu.es /9601/a77.htm (290 words)

	Driesch Hans Adolf Eduard - Search Results - MSN Encarta
		Driesch Hans Adolf Eduard - Search Results - MSN Encarta
		Driesch, Hans Adolf Eduard (1867-1941), German experimental biologist and philosopher, whose study of embryology led him to become a leading...
		Windows Live Search results on "Driesch Hans Adolf Eduard"
	encarta.msn.com /Driesch_Hans_Adolf_Eduard.html (55 words)

	AllRefer.com - Hans Adolf Eduard Driesch (Philosophy, Biography) - Encyclopedia
		AllRefer.com - Hans Adolf Eduard Driesch (Philosophy, Biography) - Encyclopedia
		Hans Adolf Eduard Driesch[hAns A´dOlf A´dOOArt drEsh] Pronunciation Key, 1867–1941, German philosopher, b.
		More articles from AllRefer Reference on Hans Adolf Eduard Driesch
	reference.allrefer.com /encyclopedia/D/Driesch.html (255 words)

	Gifford Lecture Series - Biography - Hans Driesch
		Belief in Immortality and the Worship of the Dead
		German philosopher Hans Adolf Eduard Driesch was born in Bad Kreuznach and graduated in zoology from the University of Jena in 1889.
		Driesch joined the University of Heidelberg's Philosophy faculty in 1912 and while there wrote Theory of Order (1912), Logic as a Task (1913) and Theory of Reality (1917).
	www.giffordlectures.org /Author.asp?AuthorID=54 (384 words)

	Genes and development: an early chapter in German developmental biology (Site not responding. Last check: 2007-10-10)
		From a modern point of view, it is therefore surprising that genetic concepts and methods were of no importance in the work of the outstanding German developmental biologists Hans Driesch and Hans Spemann.
		The dramatic progress in classical genetics cannot have escaped Driesch's attention, especially as T.H. Morgan had worked in his laboratory, but it is easy to see that it had no place in his "vitalistic" biology.
		Much less obvious is that Spemann's critical and open mind should have never led him to consider genetic influences in development.
	www.ijdb.ehu.es /9601/a83.htm (196 words)

	ISS: Precautions in Experiment: Hans Driesch
		But before we enter on these higher inquiries it is necessary to add two sections to our investigation of the precautions needed for the establishment as genuine of supernormal phenomena: we have expressly to deprecate both inadequate and exaggerated precautions
		The Possibility of Deception in Psychical Research: Hans Driesch
		Possibilities of Deception in Spontaneous Observation: Hans Driesch
	www.survivalafterdeath.org /articles/driesch/precautions.htm (779 words)

	Biology 104 Spring 2006
		OUTLINE OF SIXTH LECTURE: Jan 27, 2006, by Corey Johnson
		Hans Driesch's experiment demonstrated a concept known as regulation.
		As discussed (1/25), he separated sea urchin blastomeres resulting in smaller but complete sea urchin larvae.
	www.bio.unc.edu /faculty/harris/Courses/biol104/jan27.htm (979 words)

	Cloning
		[The history of cloning dates back more than a century to 1891 Naples when Hans Driesch (see also Adolph Eduard Driesch), in a controversial experiment, separated the blastomeres of a cleaving sea urchin egg.]
		He picked [sea urchins] because they have large embryo cells, and grow independently of their mothers.
		In 1902, another scientist, embryologist Hans Spemman [or Spemann] (pic), used a hair from his infant son as a knife to separate a 2-celled embryo of a salamander, which also grow externally.
	www.skewsme.com /cloning.html (7296 words)

Try your search on: Qwika (all wikis)