Governor Brigham Young Checks the Slave Trade--The Prosecution of Offenders--A Noted Trial--A Cruel Argument to Induce Mormons to Buy Indian Children. At this time Brigham Young was governor of Utah and had the oversight of Indian affairs. Some little business in the slave trade had been done on the trip the summer before by our old guide, who was a regular trader. Governor Young asked me something about this business, telling me to look out, and if any of these traders came in, to let him know, as the laws of the United States, which then extended over this Territory, prohibited this business, and that it would be his duty to put a stop to the same. He hoped to do this by advising these traders in regard to the present conditions. When this party of traders spoken of arrived. Governor Young was notified and came to Provo. The leaders of this company came to see the governor, I acting as interpreter. Mr. Young had the law read and explained to them, showing them that from this on they were under obligations to observe the laws of the United States instead of Mexico; that the treaty of Guadalupe de Hidalgo, had changed the conditions, and that from this on they were under the control of the United States. He further showed that it was a cruel practice to enslave human beings, and explained that the results of such a business caused war and bloodshed among the Indian tribes. The Mexicans listened with respect, admitting that the traffic would have to cease. It was plainly shown to them that it was a cruel business which could not be tolerated any longer; but as it had been an old established practice, they were not so much to blame for following the traffic heretofore. Now it was expected that this business would be discontinued. All seemed satisfied and pledged their words that they would return to their homes without trading for children. Most of them kept their promise, but one small party, under Pedro Lion, violated their obligations and were arrested and brought before the United States court. Judge Snow presiding.