[Ads-l] Antedating "M" (as an abbreviation for "molar") (OED 1890)

[John Doe]

1814 May 16 Account of Observations by Webb Seymour I also considered m. 1
(fig. 13) as the penultimate molar[.]
https://www.google.com/books/edition/An_Account_of_Observations_Upon_Some_Geo/dIwLVK8AUQUC?hl=en&gbpv=1&bsq=%22m%22%20%22penultimate%20molar%22

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