Section 331, R.S. 2158, prohibited cooly trade. Section 332, R.S. 2159; Mar. 3, 1911, ch. 231, 291, 36 Stat. 1167, related to forfeiture of vessels engaged in cooly trade. Section 333, R.S. 2160, related to penalty for building vessels to engage in cooly trade. Section 334, R.S. 2161, related to punishment for engaging in cooly trade. Section 335, R.S. 2162, excepted voluntary emigration of coolies from prohibition. Section 336, act Mar. 3, 1875, ch. 141, 1, 18 Stat. 477, related to inquiry and certification by consular officers. Section 337, R.S. 2163, related to examination of vessels. Section 338, act Mar. 3, 1875, ch. 141, 2, 18 Stat. 477, related to penalties for involuntary transportation of Chinese, Japanese, and others for purpose of holding to service. Section 339, act Mar. 3, 1875, ch. 141, 4, 18 Stat. 477, related to punishment for contracting to supply cooly labor.