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Oscar Hertwig’s Followers (6)

Oscar Hertwig

Born

in Friedberg, Hesse, Germany

April 21, 1849

Died

October 25, 1922

Website

http://en.wikipedia.org/wiki/Oscar_Hertwig

Genre

Science, Zoology, Evolution

Influences

Charles Darwin, Ernst Haeckel, Richard Hertwig, Carl Gegenbaur ...more

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Oscar Hertwig was a zoologist and professor, who also wrote about the theory of evolution circa 1916, over 55 years after Charles Darwin's book The Origin of Species. He was the elder brother of zoologist-professor Richard Hertwig (1850–1937). The Hertwig brothers were the most eminent scholars of Ernst Haeckel (and Carl Gegenbaur) from the University of Jena. They were independent of Haeckel's philosophical speculations but took his ideas in a positive way to widen their concepts in zoology. Initially, between 1879–1883, they performed embryological studies, especially on the theory of the coelom (1881), the fluid-filled body cavity. These problems were based on the phylogenetic theorems of Haeckel, i.e. the biogenic theory (German = bioge Oscar Hertwig was a zoologist and professor, who also wrote about the theory of evolution circa 1916, over 55 years after Charles Darwin's book The Origin of Species. He was the elder brother of zoologist-professor Richard Hertwig (1850–1937). The Hertwig brothers were the most eminent scholars of Ernst Haeckel (and Carl Gegenbaur) from the University of Jena. They were independent of Haeckel's philosophical speculations but took his ideas in a positive way to widen their concepts in zoology. Initially, between 1879–1883, they performed embryological studies, especially on the theory of the coelom (1881), the fluid-filled body cavity. These problems were based on the phylogenetic theorems of Haeckel, i.e. the biogenic theory (German = biogenetisches Grundgesetz), and the "gastraea theory".

Within 10 years, the two brothers moved apart to the north and south of Germany. Oscar Hertwig later became a professor of anatomy in 1888 in Berlin; however, Richard Hertwig had moved 3 years prior, becoming a professor of zoology in Munich from 1885–1925, at Ludwig Maximilians Universität, where he served the last 40 years of his 50-year career as a professor at 4 universities.

Richard's research focused on protists (the relationship between the nucleus and the plasm = "Kern-Plasma-Relation"), as well as on developmental physiological studies on sea urchins and frogs. He also wrote a leading Zoology textbook.

Oscar Hertwig was a leader in the field of comparative and causal animal-developmental history. He also wrote a leading textbook. He discovered fertilization of sea urchins, he recognized the role of the cell nucleus during inheritance and chromosome reduction during meiosis: in 1876, he found that fertilization includes the penetration of a spermatozoon into an egg cell.

Hertwig was elected a member of the Royal Swedish Academy of Sciences in 1903.

Oscar Hertwig is known as Oscar Hedwig in the book "Who discovered what when" by David Ellyard. A history of the discovery of fertilization for mammals including scientists like Hertwig and other workers is given by the book "The Mammalian Egg" by Austin. ...more

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Oscar Hertwig’s books

Average rating: 4.5 · 2 ratings · 0 reviews · 225 distinct works

	The Biological Problem of To-Day: Preformation or Epigenesis? The Basis of a Theory of Organic Development by Oscar Hertwig, Peter Chalmers Mitchell (Translator) it was amazing 5.00 avg rating — 1 rating — published 2011 — 34 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Die Lehre vom Organismus und Ihre Beziehung zur Sozialwissenschaft: Universitätsfestrede mit Erklärenden Zusätzen und Litteraturnachweisen really liked it 4.00 avg rating — 1 rating	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Die Verwendung Radioaktiver Substanzen Zur Zerstorung Lebender Gewebe 0.00 avg rating — 0 ratings — published 1914	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Die Radiumstrahlung in Ihrer Wirkung Auf Die Entwicklung Tierischer Eier 0.00 avg rating — 0 ratings — published 1910	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Keimesschadigung Durch Chemische Eingriffe 0.00 avg rating — 0 ratings — published 1913	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Mesothoriumversuche an Tierischen Keimzellen, Ein Experimenteller Beweis Fur Die Idioplasmanatur Der Kernsubstanzen 0.00 avg rating — 0 ratings — published 1911	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Uber Eine Neue Vorrichtung Zum Photographiren Der Ober- Und Unterseite Wagerecht Liegender Kleiner Objecte Und Uber Eine Mit Hulfe Derselben Angestell 0.00 avg rating — 0 ratings — published 1902	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Über Beziehungen des Thierischen Eies zu dem aus ihm sich entwickelnden Embryo 0.00 avg rating — 0 ratings — published 1904	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Das Werden der Organismen 0.00 avg rating — 0 ratings — published 2013 — 8 editions	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars
	Text-Book of the Embryology of Man and Mammals / by Oscar Hertwig ; Translated from the Third German Edition by Edward L. Mark. 1901 Leather Bound 0.00 avg rating — 0 ratings	Error rating book. Refresh and try again. Rate this book Clear rating 1 of 5 stars 2 of 5 stars 3 of 5 stars 4 of 5 stars 5 of 5 stars

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Quotes by Oscar Hertwig (?)

“The cell, this elementary keystone of living nature, is far from being a peculiar chemical giant molecule or even a living protein and as such is not likely to fall prey to the field of an advanced chemistry. The cell is itself an organism, constituted of many small units of life.”
― Oscar Hertwig

tags: biology, cell, chemistry, keystone, life, nature, organism, science

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Oscar Hertwig’s Followers (6)

Oscar Hertwig

Combine EditionsOscar Hertwig’s books

Combine Editions
Oscar Hertwig’s books