De Infinitorum Spiralium spatiorum mensura, opusculum geometricum.

  • Angeli, Stefano degli
  • Venetis [Venice]: Apud Ioannem La Nou 1660
  • Riccardi I 34.


SKU: 2705 Category: Tag:


FIRST EDITION, 4to, pp. [xvi], 126, [2, blank]. Woodcut diagrams within the text. Contemporary English calf, boards ruled in blind. Some toning, edges a little browned at beginning and end. Rebacked in a different shade, red morocco label, boards scuffed and marked, edges worn.


A scarce and significant tract on the measurement of spirals using indivisibles, an important precursor of infinitesimal calculus. Stefano degli Angeli (1623-1697) was a Jesuat mathematician and pupil of Bonaventura Cavalieri, who had developed the method of indivisibles, and he spent much of the 1660s clashing with the Jesuits over the method - that conflict probably underlying Pope Clement IX's decision to abolish the Jesuati in 1668. In this work Angeli also generalises Archimedes's spiral.

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