McKim, J. M., and foundation of _The Nation_, 273, 274. McKinley, William, as leader of House, 227; tariff bill, 227; as President, 229-234; change in tariff views, 229-231; and gold standard, 231; and public opinion, Spanish War and Philippines, 231-234; diplomacy, 234; influence on Congress, 234; as speaker, 241; attitude of Godkin, 286. Mackintosh, Sir James, on irreligion of Gibbon's time, 132. Madison, James, as President, 207. Mahaffy, J. P., on Herodotus, 5; on Thucydides, 8. Mahan, A. T., anticipation of theory, 127. Maine, Sir Henry, on Federal Constitution, 203, 206. Manuscript sources, value, 85, 91, 294; Gardiner's use, 143, 144. Massachusetts Historical Society, papers by author before, 141, 151, 159, 175, 183, 189, 315; recognition of Gardiner, 147; of Lecky, 156; interest of E. L. Pierce in, 181; E. G. Bourne and editorship of publications, 199. Mathematics, and training of historian, 55-57. Matthews, William, on _The Nation_, 278, 279. Merritt, E. A., appointment by Hayes, 255. Mexican War, aggression, 212; and slavery, 212. Mill, J. S., and mathematics, 56; prodigy, 56. Milligan case, and arbitrary government, 215. Milman, H. H., on Gibbon's history, 125, 139. Milton, John, on books, 60. Moliere, importance to historians, 49. Mommsen, Theodor, on Gibbon, 11, 125; as scientific historian, 43. Money. _See_ Finances. Monographs, use by general historians, 22. Monroe, James, as President, 207, 209. Monroe Doctrine, and Philippines, 195; and development of presidential office, 209. Montesquieu, Gibbon on, 119. Morison, J. A. Cotter, on Gibbon, 131. Morley, John, on Macaulay, 16, 38, 55; on Cicero and Voltaire, 51. Morrill, J. S., and Hayes's New York Custom-house appointments, 255. Morris, Gouverneur, and framing of Constitution, 204. Morse, C. F., on feeling in Union army towards South Carolina, 307. Motley, J. L., best work, 68; advice to historians, 74, 75; and manuscript sources, 86, 91; Bourne's unfinished biography, 196. _Nation_, as historical source, 95; J. D. Cox as contributor, 187; circulation, 270; foundation, 273; weekly edition of _Evening Post_, 274. _See also_ Godkin. Necker, Mme. _See_ Curchod. Negro suffrage, opposition of J. D. Cox, 186. Nerva, as "gray emperor," 127. "New English Dictionary," importance of quotations in, 55. New York Custom-house, Hayes's reforms and appointments, 254. _New York Weekly Tribune_, influence, 31, 90, 91, 267. _See also_ Greeley.