> Dear D. F. Almeida,
>
> there are
>
> - a paper by Adolf Prag in the James Gregory Tercentenary
> Memorial Volume (ed. H. W. Turnbull), London, 1939, pp. 487-509.
>
> - a dissertation by Christoph J. Scriba, James Gregorys fr"uhe
> Schriften zur Infinitesimalrechnung, Giessen: Verlag des
> Mathematischen Seminars, 1957 (=Mitteilungen aus dem Mathematischen
> Seminar Giessen, Heft 55); the Geometriae pars universalis is
> treated on pp. 29-52.
>
> - a quite recent dissertation (and a paper in HISTORIA MATHEMATICA
> if I remember correctly) by Antoni Malet (~1990); probably you will
> find more information in his article "Barrow, Wallis, and the
> remaking of 17th century indivisibles", CENTAURUS, vol. 39 (1997),
> pp. 67-92.
>
> Yours sincerely
> Siegmund Probst
>
See also and in particular Malet's _From Indivisibles to Infinitesimals:
Studies on Seventeenth-Century Mathematizations of Infinitely Small
Quantities_ (Enrahonar, Monografies 6; Barcelona: Universitat Autonoma de
Barcelona, Servei de Publicacions, 1996), which has two chapters dealing
with Gregorie, including a translation of his "Some general propositions
of geometry".
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Michael S. Mahoney Department of History Princeton University
mike@princeton.edu 303 Dickinson Hall Princeton, NJ 08544
phone 609-258-4157 fax 609-258-5326
WWW Home Page http://www.princeton.edu/~mike
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