Simon Stevinus, above mentioned, also called Stephanus--Simon of Bruges--was a most distinguished mathematician and physicist (1548–1628), and is alluded to by Edward Wright not only in the Preface to Gilbert’s “De Magnete” above referred to, but also in Book IV. chap. ix. of the latter work. The English translation of “Portuum investigandorum ratio” was afterwards attached to the third edition of Wright’s “Certaine errors in navigation detected and corrected.” REFERENCES.--“English Cycl.,” Vol. VI. p. 834; “Biogr. Génér.,” Vol. XLIV. pp. 496–498; Larousse, “Dict.,” Vol. XIV. p. 1100; G. Hellmann, “Neudrucke ...” 1898, No. 10; “Chambers’ Encycl.,” 1892, Vol. IX., p. 725; “La Grande Encycl.,” Vol. XXX. pp. 489–490; Montucla, “Hist. des Mathém.,” Paris, An. VIII. Vol. II; Quetelet, also Van de Weyer, “Simon Stevin,” 1845; “Mémoires de l’Académie,” Paris, 1753, p. 275; Steichen, “Vie et Travaux de S. Stevin,” 1846; “Terrestrial Magnetism,” Vol. I. p. 153, and Vol. II. pp. 37, 72, 78. =A.D. 1599.=--Pancirollus (Guido)--Panciroli (Gui)--already quoted at A.D. 121, further remarks: “The ancients sailed by the pole star, which they call _Cynosura_. The compass is believed to have been found at Amalfi, about 300 years ago by one Flavius. And this unknown fellow (if it was Flavius) hath deserved more than 10,000 Alexanders and as many Aristotles.... This single act hath improved knowledge and done more good to the world than all the niceties of the subtle schools.” REFERENCES.--“History of Things Lost,” London, 1715, Vol. II. p. 338; Græsse, Vol. V. p. 117; also his biography in Larousse, “Dict. Univ.,” Vol. XII. p. 108, and in the “Dict. de Biographie,” Vol. II. p. 2012. =A.D. 1600.=--Schwenter (Daniell), Professor of Oriental languages at Altdorff, describes, under the assumed name of Janus Hercules de Sunde, in his “Steganologia et Steganographia,” the means of communicating intelligence at a distance by employing two compass needles circumscribed with an alphabet, the needles being shaped from the same piece of steel, and magnetized by the same magnets.