[163] The late Greeks used the letters of their alphabet as numerals, adding three early alphabetic characters. The letter χ represented 600, ξ represented 60, and Ϝ stood for 6. This gives 666, the number of the Beast given in the Revelation.
[164] "Allowing for necessary exceptions."
[165] Mr. Gregg is not alone in his efforts to use the calculus in original lines, as any one who has read Herbart's application of the subject to psychology will recall.
[166] See Vol. I, page 105, note 4 {188}; page 109, note 1 {197}.
[167] The full title shows the plan,—The Decimal System as a whole, in its relation to time, measure, weight, capacity, and money, in unison with each other. But why is this so much worse than the French plan of which we have only the metric system and the decimal division of the angle left?
[168] One of the brothers of Sir Isaac Pitman (1813-1897), the inventor of modern stenography. Of these brothers, Benjamin taught the art in America, Jacob in Australia, and Joseph, Henry, and Frederick in England.
[169] For example, The Phonographic Lecturer (London, 1871 etc.), The Phonographic Student (1867, etc.), and The Shorthand Magazine (1866, etc.).
[170] See Vol. II, page 68, note [148].
[171] It involves the theory of non-Euclidean geometry, Euclid's postulate of parallels being used in proving this theorem.
[172] Referring to the fact that none of the works of Thales is extant.