Among books on Mexican life to be ranked first both in readability and revealing qualities.
This is presumed to represent "you" and has been expanded as such for readability.
The background pattern is taken from the original book, but has been lightened for readability.
In some cases, information has been rearranged for readability.
Here as elsewhere his perception, apart from the readability of the work, is worthy of notice.
To prevent problems with readability is chosen not to imitate that, and to move all the illustrations in between the paragraphs.
Any changes that vary from the original were minor and essential for readability.
Punctuation irregularities in the specimen lists were not corrected, since they did not affect the readability.
For readability, the footnotes have been moved to the end of the relevant chapter.
Tables and formulas have been edited for clarity and readability, while honoring the original form.