REFERENCES.--“La Grande Encyclopédie,” Vol. XVIII. p. 930; “Dictionary of National Biography,” London, 1890, Vol. XXI. p. 338; “Bibliographica Britannica,” London, 1757, Vol. IV. p. 2202; Larousse, “Dict. Univ.,” Vol. VIII. p. 123; “Freeman’s Historic Towns” (Colchester), by Rev. E. L. Cutts, 1888, p. 172; “Beauties of England and Wales,” by E. W. Brayley and John Britton, 1810, Vol. V. (Colchester) pp. 318–319; Cooper, “Athenæ Cantabrigienses,” Cambridge, 1858; Anthony à Wood, “Athenæ Oxonienses,” London, 1813, Vol. I; Thomas Wright, “Hist. and Top. of the County of Essex,” 1866, Vol. I; “Journal des Savants” for June 1859, Sept. 1870; Wm. Munk, “The Roll of the Royal College of Physicians of London,” 1878, Vol. I. p. 77; Humboldt, “Cosmos,” 1859–1860, Vol. I. pp. 158–159, note, 177, 179, 182, note; Vol. II. pp. xvii, 279–281, 334–335, 341–342; Vol. V. p. 58 for references to and extracts from Dr. Gilbert’s work; Wm. Whewell, “Hist. of the Ind. Sciences,” Vol. I. pp. 274–275, 394; Vol. II. pp. 192, 217–220, 224, 225, and “Philosophy of the Ind. Sciences,” London, 1840, Vol. II. pp. 374–379; “Mémoires de Physique,” Lausanne, 1754, pp. 123, etc.; “U.S. Magnetic Tables and Isogonic Charts for 1902,” L. A. Bauer, pp. 1–77; “Popular Science Monthly,” August 1901, pp. 337–350 for “Gilbert of Colchester,” by Bro. _Potamian_, also its translation in “Ciel et Terre” for Dec. 1, 1902, pp. 472–480 and for Dec. 16, 1902, p. 489; “New International Encyclopædia,” New York, 1903, Vol. VIII. p. 368; “William Gilbert of Colchester,” by Conrad Wm. Cooke, London, 1890 (reprinted from “Engineering,” 1889); “William Gilbert of Colchester,” by Dr. Silvanus P. Thompson, London, 1891; “William Gilbert of Colchester,” a translation by P. Fleury Mottelay, New York and London, 1893; “William Gilbert of Colchester,” a translation by members of the Gilbert Club, London, 1900, to which is appended a valuable collection of “Notes on the _De Magnete_” of Dr. William Gilbert, by Dr. Silvanus P. Thompson, who therein also gives an interesting bibliography of this great work; “William Gilbert of Colchester,” a sketch of his magnetic philosophy by Chas. E. Benham, Colchester, 1902; “Zur bibliographie von W. Gilbert’s _De Magnete_,” Von. G. Hellmann (“Terrestrial Magnetism and Atmospheric Electricity” for June 1902); “Terr. Magn. and Atm. Elect.,” Vol. II. p. 45 for “The Earth a Great Magnet,” by J. A. Fleming; “The Earth a Great Magnet,” by Prof. Alfred M. Mayer, New York, 1872; Philip Morant, “History and Antiquities of Colchester,” London, 1748; Bacon, “Novum Organum,” Leyden, 1650, pp. 263–265; Rees’ “Encyclopædia,” 1819, Vol. XVI. article “Gilbert”; “A Course of Lectures on Natural Philosophy and the Mechanical Arts,” by Thos. Young, London, 1807, Vol. I. pp. 686, 747, 756; Vol. II. pp. 111, 324, 436; “Critical Dictionary of Engl.