Revived interest in small denominations, 257. — The greenback period, 258. — Regulation of denominations in greenback laws, 259. — In the national banking law, 260. — Silver dollars and silver certificates under the Bland-Allison act, 262. — The Silver Purchase act of 1890, 263. — Table, 264. — Treasury notes of 1890, 266. — Developments after repeal of Silver Purchase act, 268. — Gold standard law of 1900, 269. — Developments after 1900, 271. —Act of March 4, 1907, 272. — Discretion granted to national banks, 1917, 276.