This is the title page to the English version of Isaac Barrow's *Geometrical Lectures*, which were originally given in his position as Lucasian Professor of Mathematics at Cambridge University. These lectures contain one of the earliest statements and proofs of what is today known as the fundamental theorem of calculus.

From the Rare Book and Manuscript Collection at Columbia University.

Part of the Mathematical Treasures section of Loci: Convergence.

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