Marked with an X of Wisdom ( (えい) () (みち) (しるべ) Eichi no Michishirube) is the one hundred seventy second chapter of the Dr. Stone manga.

Summary

Characters in Order of Appearance

Chapter Notes

  • Senku and his group find a deserted island.
    • The group disembark in order to create fuel for their voyage.
    • Senku plans to create Superalloy City in South America.
  • Dr. Chelsea a geographer from the modern times is on the island.
    • Chelsea is familiar with Xeno from meeting at the Science Expo thousands of years ago.
    • Dr. Chelsea reveals that she overheard Stanley’s order and stayed conscious for thousands of years.
    • Dr. Chelsea revived three years after the American Colony.
    • It is revealed Xeno had signs built to help any other Americans find him and the others.
    • Because of her nearsightedness, Chelsea went South instead of north to reunite with the other Americans.
    • Chelsea endured a full year on an island while suffering from nearsightedness.
    • When Chelsea squints her eyes, her face resembles Suika's when she squints without glasses.
    • Chelsea is given a new set of glasses by Senku.
    • Chelsea reveals a way to travel to South America quicker.
  • Because Chelsea, Senku plans to create a motorcycle.
    • Xeno appears to not have crafted rubber.

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Volume 1 1234567Extras
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Chapters not yet in tankōbon format 170171172173174175176177178179180181182
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Story Arcs
Prologue Saga
Stone Formula Arc
Chapters 1234
Episodes 12
Vs. Tsukasa Arc
Chapters 56789101112
Episodes 345
Ishigami Village Saga
Kingdom of Science Arc
Chapters 131415161718192021222324252627282930313233
Episodes 5678910111213
Village Games Arc
Chapters 34353637383940
Episodes 131415
Village Origins Arc
Chapters 4142434445
Episodes 1617
Stone Wars Saga
Vs. Hyoga Arc
Chapters 4647484950
Episodes 1819
Communications Arc
Chapters 5152535455565758596061626364656667686970717273747576777879808182
Episodes 20212223242526
Source of the Petrification Saga
Age of Exploration Arc
Chapters 8384858687888990919293949596979899 100
Episodes
Treasure Island Arc
Chapters 101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138
Episodes
The Truth of the Petrification Saga
New America City Arc
Chapters 139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169
Episodes
South America Arc
Chapters 170171172173174175176177178179180181182
Episodes
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