# John D. Haseman — Through the Brazilian Wilderness character guide

> John D. Haseman in Through the Brazilian Wilderness by Theodore Roosevelt.

**Role:** supporting

**Also known as:** Haseman, Mr. Haseman

**First appearance:** 0005-i-the-start

## Snapshot

A naturalist and fish collector whose nets and notebooks turn the expedition's river miles into specimens for the American Museum of Natural History.

## Who they are

Haseman is one of the museum men Roosevelt recruited to make the journey a collecting trip rather than a mere tour. His work — seining, preserving, cataloguing — gives the expedition a scientific purpose beyond adventure, and his findings feed Roosevelt's fascination with piranhas, insects, and the teeming life of tropical waters. He represents the quieter, methodical strand of the enterprise that runs alongside its dangers.

## In the story

### [Appendix A: The Work of the Field Zoologist and Field Geographer in South America](https://www.betterreads.dev/discover/through_the_brazilian_wilderness_se/chapters/appendix-a-the-work-of-the-field-zoologist-and-field-geographer-in-south-america)

Praised as a model field zoologist for his painstaking work on South American fishes from 1907-1910, but criticized for his obscure and pedantic writing style.

## Links

- HTML: https://www.betterreads.dev/discover/through_the_brazilian_wilderness_se/characters/john_haseman
- Book: https://www.betterreads.dev/discover/through_the_brazilian_wilderness_se
- All characters: https://www.betterreads.dev/discover/through_the_brazilian_wilderness_se/characters