science

René Lesson

René Lesson is a science 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 René Lesson rather than just read about it. In short: René Primevère Lesson (French pronunciation: [ʁəne pʁimvɛʁ lɛsɔ̃]; 20 March 1794 – 28 April 1849) was a French surgeon, naturalist, ornithologist, and herpetologist. Biography Lesson was born at Rochefort, and entered the Naval Medical School in Rochefort at the age of sixteen.

Key takeaways

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Reference excerpt

René Primevère Lesson (French pronunciation: [ʁəne pʁimvɛʁ lɛsɔ̃]; 20 March 1794 – 28 April 1849) was a French surgeon, naturalist, ornithologist, and herpetologist.

Biography Lesson was born at Rochefort, and entered the Naval Medical School in Rochefort at the age of sixteen. He served in the French Navy during the Napoleonic Wars; in 1811, he was third surgeon on the frigate Saale, and in 1813, was second surgeon on the Regulus. In 1816, Lesson changed his classification to pharmacist. He served on Duperrey's round-the-world voyage of La Coquille (1822–1825), of which he collected natural history specimens with his fellow surgeon Prosper Garnot and officer Dumont d'Urville. During his visits to the Moluccas and New Guinea, Lesson became the first naturalist to see birds of paradise in the wild. On returning to Paris, he spent seven years preparing the section on vertebrates for the official account of the expedition: "Voyage autour du monde entrepris par ordre du Gouvernement sur la corvette La Coquille" (published from 1826 to 1839). During this time period, he also produced "Manuel d'Ornithologie" (1828), "Traité d'Ornithologie" (1831), "Centurie Zoologique" (1830–1832) and "Illustrations de Zoologie" (1832–35). Lesson also published several monographs on hummingbirds and one book on birds of paradise:

Histoire naturelle des oiseaux-mouches. ouvrage orné de planches... (1829–1831). Histoire naturelle des Colibris suivie d'un supplement a l'histoire naturelle des oiseaux-mouches (1831–32). Les trochilidées ou les colibris et les oiseaux-mouches (1832). Histoire naturelle des oiseaux de paradis et des épimaques; ouvrage orné de planches, dessinées et gravées par les meilleurs artistes (1835). In the field of herpetology he described many new species of amphibians and reptiles. On 3 February 1827, he married the artist and scientific illustrator Clémence Dumont de Sainte-Croix. Dumont de Sainte-Croix along with her sister Zoë Dumont de Sainte-Croix illustrated plates in Lesson's publications. From 1831, he served as a professor of pharmacy, and following a series of promotions, became the top-ranking naval pharmacist at Rochefort (1835). His experience as a ship's surgeon resulted in his two-volume "Manuel d'histoire naturelle medicale, et de pharmacographie" (1833), intended as a handbook for naval surgeons. He became a corresponding member of the Académie de Médecine in 1828, later becoming a correspondent of the Académie des Sciences (1833). He received the Légion d'honneur in 1847. In 1847, Lesson presented a division of human races based on simple colour terms: White for Caucasians, Dusky for South Asians, Orange for Austronesians, Yellow for East Asians, Red for Indigenous Americans, and Black for Africans. This model achieved moderate use among ethnologists. René Primevère Lesson is sometimes confused with his brother, Pierre Adolphe Lesson (1805–1888), who participated on the Astrolabe expedition (as the Coquille had been renamed) in 1826–29, under the command of Jules Dumont d'Urville.

Taxa described by Lesson See Category:Taxa named by René Lesson

Amphibian and reptile species described by Lesson listed in the order they were described (only species still recognized are listed)

Litoria aurea (Lesson, 1826) as Rana aurea (green and golden bell frog) Pleurodema thaul (Lesson, 1826) as Bufo thaul (Chile four-eyed frog) Hylarana papua (Lesson, 1826) as Rana papua (Papua River frog) Emoia cyanura (Lesson, 1826) as Scincus cyanurus (copper-tailed emo skink) Lamprolepis smaragdina (Lesson, 1826) as Hinulia smaragdina (emerald tree skink) Liolaemus chiliensis (Lesson, 1826) as Calotes chiliensis (Chilean tree lizard) Ornithuroscincus noctua (Lesson, 1826) as Scincus noctua (moth skink) Varanus douarrha (Lesson, 1830) Emoia atrocostata (Lesson, 1830) as Scincus atrocostatus (mangrove skink) Emoia cyanogaster (Lesson, 1830) as Scincus cyanogaster (green-bellied emo skink) Enyalius brasiliensis (Lesson, 1830) as Lophurus brasiliensis (Brazilian fathead anole) Gehyra oceanica (Lesson, 1830) as Gecko oceanicus (oceanic gecko) Microlophus peruvianus (Lesson, 1830) as Stellio peruvianus (Peruvian coastal lizard) Micropechis ikaheca (Lesson, 1830) as Coluber ikaheka (New Guinea small-eyed snake) Naja kaouthia (Lesson, 1831) (monocled cobra) Crocodylus palustris (Lesson, 1831) (mugger crocodile) Euphlyctis hexadactylus (Lesson, 1834) as Rana hexadactyla (Indian bullfrog) Draco lineatus (Lesson, 1834) (Buru flying lizard)

Fish described by Lesson Scarus taeniopterus (Lesson 1829) Acanthurus bariene (Lesson 1831) Abantennarius coccineus (Lesson 1831) Arothron mappa (Lesson 1831) Triodon macropterus (Lesson 1829) Nebrius ferrugineus (Lesson 1831) Scuticaria tigrina (Lesson 1828)

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with René Lesson

Start with the simplest possible case. Write down what René Lesson claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 René Lesson 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 René Lesson 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 René Lesson

In research: René Lesson appears in science 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 René Lesson 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: René Lesson is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1794 births, 1849 deaths, 19th-century French medical doctors, so understanding it makes those chapters shorter.
In everyday life: Look for René Lesson 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 René Lesson in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what René Lesson means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
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Frequently asked questions

What is René Lesson in simple terms?

René Primevère Lesson (French pronunciation: [ʁəne pʁimvɛʁ lɛsɔ̃]; 20 March 1794 – 28 April 1849) was a French surgeon, naturalist, ornithologist, and herpetologist. Biography Lesson was born at Rochefort, and entered the Naval Medical School in Rochefort at the age of sixteen.

Why does René Lesson matter?

Because it connects several science 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 René Lesson?

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 René Lesson.