Howe, Timothy O., his attacks on Mr. Sumner, XIX. 102 _et seq._ Human Nature, goodness of, I. 107. Human Rights, sympathy with, everywhere, a letter expressing, III. 168. No compromise of, XIII. 282, 312. Dedication of United States to, XVI. 28, 31, 54; XIX. 226. Any enactment for, constitutional, XVII. 38. Hume, David, his account of refusals of English sailors to serve in unjust wars, I. 349 _et seq._ On slavery, XII. 160. On duration of the English language, XV. 313. On America, XV. 385 _et seq._ Humphreys, Col., on freeing American slaves in Barbary States, II. 59, 72; VIII. 293, 296. Hunter, William, XIV. 82. Hyatt, Thaddeus, imprisonment of, VI. 80; XIX. 133, 146. I. Idea, absorption in one, dangerous, I. 208; objections to Free Soil Party for same, refuted, III. 34; XVI. 338. Illinois, appeal to Republicans of, in 1856, VI. 13. Impeachment, privileges of debate in the Senate on officers liable to, XV. 241, 249. A political proceeding, XVI. 136-141, 228. Character of offences liable to, XVI. 141; authorities on same, XVI. 143-147. Form of procedure in, untechnical, XVI. 148; precedents and authorities proving same, XVI. 149-157. Rules of evidence in cases of, XVI. 157-164; authorities respecting same, XVI. 158-160. Income Tax, XVIII. 40. McCulloch on, XVIII. 41-43. Sir R. Peel on, XVIII. 43. Reason for, in England, XVIII. 44. Independence, and those who saved the original work, XVI. 256. Indians, included under word “person” in the Constitution, III. 298; VIII. 277; XI. 194. Massacre of Cheyenne, XII. 66. Industrial Exhibition at London, in 1862, VIII. 157. Inhabitancy, question of, XVIII. 11. Authorities respecting, XVIII. 13 _et seq._, 18. Judicial decision on admissible evidence to prove, XVIII. 15 _et seq._ Insane, gentleness in treatment of, I. 106. International Law, sanctions war, I. 13, 293; II. 340; XVIII. 182. Wheaton’s works on, II. 216, 219, 220, 222-225. Authorities on supremacy of, II. 339. Object of, II. 350. Modes of establishing principles of, VIII. 31. Should not be violated, VIII. 37; XIX. 67. British pretensions under, VIII. 41. Needed reforms in maritime, VIII. 75-79. Gen. Halleck’s work on, VIII. 330. Does not require recognition of a _de facto_ power, X. 105; authorities declaring same, X. 106-108. Morality a part of, X. 109. Montesquieu on, XII. 86. Everett’s knowledge of, XII. 87. Lieber’s acquaintance with, XII. 88. Intervention, belligerent, III. 180; X. 84; XIX. 73. Protest against foreign, IX. 307. Character of foreign, X. 48-50, 86. Instances of, in external affairs, X. 51-53; and in internal affairs, X. 53-71. Unarmed, X. 85. By recognition, X. 87; instances of same, X. 87-94. Authorities respecting belligerent, XIX. 74 _et seq._