Problema Austriacum. Plus ultra Quadratura Circuli. Auctore P. Gregorio
a Sancto Vincentio Soc. Jesu., Antwerp, 1647, folio.--Opus Geometricum
posthumum ad Mesolabium. By the same. Gandavi [Ghent], 1668,
folio.[227]
The first book has more than 1200 pages, on all kinds of geometry. Gregory
St. Vincent is the greatest of circle-squarers, and his investigations led
him into many truths: he found the property of the area of the
hyperbola[228] which led to Napier's logarithms being called _hyperbolic_.
Montucla says of him, with sly truth, that no one has ever squared the
circle with so much genius, or, excepting his principal object, with so
much success.[229] His reputation, and the many merits of his work, led to
a sharp controversy on his quadrature, which ended in its complete exposure
by Huyghens and others. He had a small school of followers, who defended
him in print.
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