# Endnotes explained — Thuvia, Maid of Mars

> Chapter companion for Thuvia, Maid of Mars by Edgar Rice Burroughs.

## What happens

This chapter provides a detailed explanation of Barsoomian linear measurement, converting units such as the ad, haad, and karad into Earth equivalents for the reader's convenience.

## Key lines

> On Barsoom the ad is the basis of linear measurement. It is the equivalent of an Earthly foot, measuring about 11.694 Earth inches.

The Barsoomian unit 'ad' is roughly 11.7 inches, similar to an Earth foot.

_Defines the fundamental Barsoomian unit of length._

> A haad, or Barsoomian mile, contains about 2,339 Earth feet.

One haad equals approximately 2,339 Earth feet, making it shorter than an Earth mile.

_Converts the Barsoomian mile to Earth feet._

## Links

- HTML: https://www.betterreads.online/discover/thuvia_maid_of_mars_se/chapters/endnotes
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