Definition:Apothecaries' Ounce/Mistake
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Source Work
1986: David Wells: Curious and Interesting Numbers:
- The Dictionary
- $24$
1997: David Wells: Curious and Interesting Numbers (2nd ed.):
- The Dictionary
- $24$
Mistake
It is not made clear that this is an apothecaries' ounce, not an ounce avoirdupois, which is some $10\%$ lighter.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $24$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $24$