biology

Henri Filhol

Henri Filhol 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 Filhol rather than just read about it. In short: Henri Filhol (13 May 1843 – 28 April 1902) was a French medical doctor, malacologist and naturalist born in Toulouse. He was the son of Édouard Filhol (1814-1883), curator of the Muséum de Toulouse.

Key takeaways

Henri Filhol 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 Filhol to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Henri Filhol from memory before moving on to harder problems.

Reference excerpt

Henri Filhol (13 May 1843 – 28 April 1902) was a French medical doctor, malacologist and naturalist born in Toulouse. He was the son of Édouard Filhol (1814-1883), curator of the Muséum de Toulouse. After receiving his early education in Toulouse, he moved to Paris, where he obtained doctorates in medicine and science. In 1879 he was appointed professor of zoology at the Faculty of Toulouse. From 1894 to 1902 he occupied the chair of comparative animal anatomy at the Muséum national d'Histoire naturelle in Paris. In 1897 he became a member of the Académie des sciences. In the field of paleontology, he performed important studies of fossilized mammals in the phosphorites in Quercy. Filhol served as the expedition doctor and naturalist on the French 1874 Transit of Venus Expedition to Campbell Island, with Filhol Peak on the island being named after him. In 1883 with Alphonse Milne-Edwards, Léon Vaillant, Edmond Perrier and others, he embarked on a scientific journey aboard the Talisman. The ghost shrimp Filhollianassa filholi was named in honor of Filhol.

Filhol's Collection in the Muséum de Toulouse

References

Illustrations

Worked examples

Example 1 — a first encounter with Henri Filhol

Start with the simplest possible case. Write down what Henri Filhol 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 Filhol 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 Filhol 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 Filhol

In research: Henri Filhol 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 Filhol 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 Filhol is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1843 births, 1902 deaths, 19th-century French biologists, so understanding it makes those chapters shorter.
In everyday life: Look for Henri Filhol 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Henri Filhol in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Henri Filhol 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.
Explain Henri Filhol out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Henri Filhol in simple terms?

Why does Henri Filhol 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 Filhol?

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 Filhol.