Note 58 — Book VI (continued 11)

For Gauss and Weber: Humboldt, “Cosmos,” 1849, Vol. I. pp. 172, 185–186; Vol. II. p. 720, and Vol. V, 1859, pp. 63, 71; “Encycl. Brit.,” 1879, Vol. X. p. 116, and the 1902 ed. Vol. XXXIII. p. 798; “Am. Journ. of Psych.,” Vol. IV. pp. 7–10; “New International Encycl.,” 1903, Vol. VIII. p. 159. The following curious array of figures is selected from Gauss’ many interesting calculations. He found that the earth’s magnetism is such as would result from the existence, in every cubic yard of its mass, of six magnetized steel bars, each weighing one pound. Compared with one such magnet, the magnetism of the earth is represented by 8,464,000,000,000,000,000,000 (“Am. Ann. of Sc. Dis.,” 1852, p. iii).