[40] British and Foreign State Papers, 1823-4, and 1826-7. 
      Brazil abolished the trade in 1830.

 [41] This treaty was further defined in 1833:  Ibid., 1830-1,
      p. 641 ff.; 1832-3, p. 286 ff.

 [42] Ibid., 1833-4, pp. 218 ff., 1059 ff.

 [43] Ibid., 1837-8, p. 268 ff.

 [44] Ibid., 1838-9, p. 792 ff.

 [45] Viz., Feb. 28, 1825; April 7, 1830; Feb. 16, 1831; March
      3, 1831.  The last resolution passed the House:  House
      Journal, 21 Cong. 2 sess. pp. 426-8.

 [46] Cf. House Doc., 26 Cong. 2 sess.  V. No. 115, pp. 35-6,
      etc.; House Reports, 27 Cong. 3 sess.  III.  No. 283, pp.
      730-55, etc.

 [47] These were the celebrated cases of the “Encomium,”
      “Enterprize,” and “Comet.”  Cf. Senate Doc., 24 Cong. 2 sess. 
      II.  No. 174; 25 Cong. 3 sess.  III.  No. 216.  Cf. also case of
      the “Creole”:  Ibid., 27 Cong. 2 sess.  II.-III.  Nos. 51, 137.

 [48] Ibid., 26 Cong. 2 sess.  IV.  No. 179; Senate Exec. 
      Doc., 31 Cong. 2 sess.  III.  No. 29; 32 Cong. 2 sess.  III.  No.
      19; Senate Reports, 31 Cong. 2 sess.  No. 301; 32 Cong. 1
      sess.  I. No. 158; 35 Cong. 1 sess.  I. No. 36; House Doc., 26
      Cong. 1 sess.  IV.  No. 185; 27 Cong. 3 sess.  V. No. 191; 28
      Cong. 1 sess.  IV.  No. 83; House Exec.  Doc., 32 Cong. 2 sess. 
      III.  No. 20; House Reports, 26 Cong. 2 sess.  No. 51; 28
      Cong. 1 sess.  II.  No. 426; 29 Cong. 1 sess.  IV.  No. 753; also
      Decisions of the U.S.  Supreme Court, 15 Peters, 518.  Cf. 
      Drake, Revelations of a Slave Smuggler, p. 98.

 [49] British and Foreign State Papers, 1834-5, p. 136.

 [50] Ibid., pp. 135-47.  Great Britain made treaties
      meanwhile with Hayti, Uruguay, Venezuela, Bolivia, Argentine
      Confederation, Mexico, Texas, etc.  Portugal prohibited the
      slave-trade in 1836, except between her African colonies.  Cf.
      Ibid., from 1838 to 1841.

 [51] These estimates are from the following sources:  Ibid.,
      1822-3, pp. 94-110; Parliamentary Papers, 1823, XVIII.,
      Slave Trade, Further Papers, A., pp. 10-11; 1838-9, XLIX.,
      Slave Trade, Class A, Further Series, pp. 115, 119, 121;
      House Doc., 19 Cong. 1 sess.  I. No. 1, p. 93; 20 Cong. 1
      sess.  III.  No. 99; 26 Cong. 1 sess.  VI.  No. 211; House Exec. 
      Doc., 31 Cong. 2 sess.  I. No. 1, p. 193; House Reports, 21
      Cong. 1 sess.  III.  No. 348; Senate Doc., 28 Cong. 1 sess. 
      IV.  No. 217; 31 Cong. 1 sess.  XIV.  No. 66; 31 Cong. 2 sess. 
      II.  No. 6; Amer.  State Papers, Naval, I. No. 249;