277139
[Commentary:
The text referred to here is Bernard Mesolabii expositio
(Salignac . The diagram relates to Proposition 4, on pages 20–22
(Salignac 1574, . Harriot's lettering matches Salignac's diagrams on pages 21 and 22, but is more complete and shows construction lines. ]
De Mesolabio B.
[Translation: On the mesolabium of B. ]
[Translation: On the mesolabium of B. ]

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