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Henri Marie Ducrotay de Blainville

Henri Marie Ducrotay de Blainville is a biology topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Henri Marie Ducrotay de Blainville rather than just read about it. In short: Henri Marie Ducrotay de Blainville (French: [ɑ̃ʁi maʁi dykʁɔtɛ də blɛ̃vil]; 12 September 1777 – 1 May 1850) was a French zoologist and anatomist. Life Blainville was born at Arques, near Dieppe.

Henri Marie Ducrotay de Blainville — main illustration
Henri Marie Ducrotay de Blainville — illustration

Key takeaways

  • Henri Marie Ducrotay de Blainville belongs to biology; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Henri Marie Ducrotay de Blainville to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Henri Marie Ducrotay de Blainville from memory before moving on to harder problems.

Reference excerpt

Henri Marie Ducrotay de Blainville (French: [ɑ̃ʁi maʁi dykʁɔtɛ də blɛ̃vil]; 12 September 1777 – 1 May 1850) was a French zoologist and anatomist.

Life Blainville was born at Arques, near Dieppe. As a young man, he went to Paris to study art, but ultimately devoted himself to natural history. He attracted the attention of Georges Cuvier, for whom he occasionally substituted as lecturer at the Collège de France and at the Athenaeum Club, London. In 1812, he was aided by Cuvier in acquiring the position of assistant professor of anatomy and zoology in the Faculty of Sciences at Paris. Eventually, relations between the two men soured, a situation that ended in open enmity. In 1819, Blainville was elected a member of the American Philosophical Society in Philadelphia. In 1825, he was admitted a member of the French Academy of Sciences; and in 1830, he was appointed to succeed Jean-Baptiste Lamarck in the chair of natural history at the museum. Two years later, on the death of Cuvier, he obtained the chair of comparative anatomy, of which he proved himself a worthy successor to his former teacher. In 1837, he was elected a foreign member of the Royal Swedish Academy of Sciences. On May 1, 1850, he died from an attack of apoplexy in a railway carriage at the Embarcadère du Havre (current Gare Saint-Lazare) in Paris. He was the taxonomic authority of numerous zoological species, extinct and extant; including the eponymous Blainville's beaked whale, Mesoplodon densirostris. In the field of herpetology, he adopted Pierre André Latreille's proposal of separating Amphibia from Reptilia, and then (1816) developed a unique arrangement in regards to sub-groupings, using organs of generation as primary criteria. He described several new species of reptiles. Blainville rejected evolution. He was a critic of Lamarck's evolutionary ideas but similar to Lamarck proposed a great chain of being.

It was in 1822 that he coined the term paleontology.

Taxa named in his honor Blainville is commemorated in the scientific names of several species, such as the

North American lizard Phrynosoma blainvillii. The fossil actinopterygian fish Aeduella blainvillei from the Permian period of Europe. The deep-bodied pipefish (Leptonotus blainvilleanus) (Eydoux & Gervais, 1837) is a species of marine fish belonging to the family Syngnathidae. The La Plata river dolphin Pontoporia blainvillei.

Selected writings Sur les ichthyolites, ou, Les poissons fossiles (1818) - On "ichthyolites", or fossil fish. De l'organisation des animaux, ou Principes d'anatomie comparée (1822) - On the organization of animals, or principles of comparative anatomy. Manuel de malacologie et de conchyliologie (1825–1827) - Manual of malacology and conchology. Cours de physiologie générale et comparée (1829) - Course of general and comparative physiology. Manuel d'actinologie, ou de zoophytologie (1834) - Manual of actinology [the study of the chemical effects of visible and ultraviolet light] or zoophytology. Ostéographie ou description iconographique comparée du squelette et du système dentaire des mammifères récents et fossiles (1839–64) - Osteography or comparative iconographical descriptions of the skeleton and teeth of living and fossil mammals.

Taxon described by him See Category:Taxa named by Henri Marie Ducrotay de Blainville

References

Attribution:

This article incorporates text from a publication now in the public domain: Chisholm, Hugh, ed. (1911). "Blainville, Henri Marie Ducrotay de". Encyclopædia Britannica. Vol. 4 (11th ed.). Cambridge University Press. p. 33.

Illustrations

Henri Marie Ducrotay de Blainville illustration
Henri Marie Ducrotay de Blainville: First mention of the word palæontologie, as coined in January 1822 by Blainville in his Journal de physique.
First mention of the word palæontologie, as coined in January 1822 by Blainville in his Journal de physique.

Worked examples

Example 1 — a first encounter with Henri Marie Ducrotay de Blainville

Start with the simplest possible case. Write down what Henri Marie Ducrotay de Blainville claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Henri Marie Ducrotay de Blainville before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Henri Marie Ducrotay de Blainville ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Henri Marie Ducrotay de Blainville

In research
Henri Marie Ducrotay de Blainville appears in biology research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Henri Marie Ducrotay de Blainville in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Henri Marie Ducrotay de Blainville is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1777 births, 1850 deaths, 19th-century French zoologists, so understanding it makes those chapters shorter.
In everyday life
Look for Henri Marie Ducrotay de Blainville outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Henri Marie Ducrotay de Blainville in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Henri Marie Ducrotay de Blainville means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Henri Marie Ducrotay de Blainville out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Henri Marie Ducrotay de Blainville in simple terms?

Henri Marie Ducrotay de Blainville (French: [ɑ̃ʁi maʁi dykʁɔtɛ də blɛ̃vil]; 12 September 1777 – 1 May 1850) was a French zoologist and anatomist. Life Blainville was born at Arques, near Dieppe.

Why does Henri Marie Ducrotay de Blainville matter?

Because it connects several biology ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Henri Marie Ducrotay de Blainville?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Henri Marie Ducrotay de Blainville.

Tags

  • 1777 births
  • 1850 deaths
  • 19th-century French zoologists
  • Burials at Père Lachaise Cemetery
  • Conchologists
  • Critics of Lamarckism
  • Foreign members of the Royal Society
  • French anatomists
  • French fellows of the Royal Society
  • French herpetologists
  • French taxonomists
  • International members of the American Philosophical Society

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