# Geoffroy Saint-Hilaire — The Origin of Species character guide

> Geoffroy Saint-Hilaire in The Origin of Species by Charles Darwin.

**Role:** minor

**Also known as:** Geoffroy Saint - Hilaire, Geoffroy, M. Isidore Geoffroy Saint - Hilaire, Isidore Geoffroy Saint - Hilaire

**First appearance:** 0001-an-historical-sketch-of-the-progress-of-opinion-on-the-origin-of-species-previously-to-the-publication-of-the-first-edition-of-this-work

## Who they are

A French naturalist who studied embryology and unity of type.

## In the story

### [An Historical Sketch of the Progress of Opinion on the Origin of Species, Previously to the Publication of the First Edition of This Work](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/an-historical-sketch-of-the-progress-of-opinion-on-the-origin-of-species-previously-to-the-publication-of-the-first-edition-of-this-work)

Suspected species were degenerations of a type; relied on conditions of life as cause of change.

### [Effects of Habit and of the Use or Disuse of Parts; Correlated Variation; Inheritance](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/effects-of-habit-and-of-the-use-or-disuse-of-parts-correlated-variation-inheritance)

Cited for his work on monstrosities and correlations between distinct parts.

### [Circumstances Favourable to Man’s Power of Selection](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/circumstances-favourable-to-man-s-power-of-selection)

Cited for proving that domestic varieties differ more in size than distinct species of the same genus.

### [Correlated Variation](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/correlated-variation)

Remarked on the frequent coexistence of certain malconformations without assignable reason.

### [Compensation and Economy of Growth](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/compensation-and-economy-of-growth)

Proposed the law of compensation or balancement of growth alongside Goethe.

### [Multiple, Rudimentary, and Lowly-Organised Structures Are Variable](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/multiple-rudimentary-and-lowly-organised-structures-are-variable)

Cited for the rule that multiple repeated parts are variable in number and structure.

### [Specific Characters More Variable Than Generic Characters](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/specific-characters-more-variable-than-generic-characters)

Cited regarding the correlation between normal differences among species and the frequency of anomalies in individuals.

### [Morphology](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/morphology)

Noted for emphasizing the high importance of relative position or connection in homologous parts.

### [Endnotes](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/endnotes)

Referenced for his history of opinion on Buffon's conclusions and for coming to similar conclusions on the origin of species.

## Links

- HTML: https://www.betterreads.dev/discover/the_origin_of_species_se/characters/geoffroy_saint_hilaire
- Book: https://www.betterreads.dev/discover/the_origin_of_species_se
- All characters: https://www.betterreads.dev/discover/the_origin_of_species_se/characters