# James Dwight Dana — The Origin of Species character guide

> James Dwight Dana in The Origin of Species by Charles Darwin.

**Role:** minor

**Also known as:** Dana, Prof. Dana

**First appearance:** 0086-xii-geographical-distribution

## Who they are

A geologist and zoologist who studied coral reefs and crustaceans.

## In the story

### [Effects of the Increased Use and Disuse of Parts, as Controlled by Natural Selection](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/effects-of-the-increased-use-and-disuse-of-parts-as-controlled-by-natural-selection)

Provided information on affinities of American cave animals.

### [Geographical Distribution](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/xii-geographical-distribution)

Cited for his work on crustaceans, showing closely allied forms in the Mediterranean and seas of Japan.

### [Dispersal During the Glacial Period](https://www.betterreads.dev/discover/the_origin_of_species_se/chapters/dispersal-during-the-glacial-period)

Described closely allied crustaceans in the Mediterranean and seas of Japan in his admirable work.

## Links

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