Hon. C. M. Dean, Supt. Indian Affairs, Ft Smith. [_Inclosure_]--_Copy_ PINE RIDGE, CHOC. NA. Nov. 15, 1855. REV. S. B. TREAT, Cor. Secretary of the A.B.C.F.M. Rev. & Dear Brother, When the Rev. G. W. Wood visited us as a deputation from the Prudential Committee, he treated us, our views, and _our practice_ so kindly, and spoke to us so many encouraging words, that we were constrained to meet him in a similar spirit of concilliation. We were willing to re-examine the difference in views on the subject of slavery, which for a long time had existed between the Committee and ourselves, and to see if there was not common ground on which we could stand together. At the opening of the meeting at Good Water, Mr. Wood laid aside the letter of June 22nd '/48. This was a subject we were not to discuss. He then introduced, by way of compromise, as we understood it, certain articles to show that there were principles, or modes of expression, in relation to slavery, in which there was substantial agreement. To these articles, though not expressed in every particular as we could have wished, (and after some of them had been modified by oral explanations,) we gave our assent, for the sake of peace. We hoped it would put an end to agitation on a subject which had so long troubled us, and hindered us in our work. We took it for granted that the Committee had yielded certain important points, insisted on in the letter of June 22nd '/48. This gladdened our hearts, and disposed us to meet Mr. Wood's proposal in a spirit of concilliation and confidence. We are not skilled in diplomacy, and had no thought that we were assenting to articles which would be considered as covering the whole ground of the letter of June 22nd. The first intimation that we had been mistaken, was from a statement made by Mr. Wood, in New York, that the result of the meeting at Good Water "_involved no change of views or action_ on the part of the Prudential Committee and Secretaries." In Mr. Wood's report to the Pru. Com. which was read at Utica, the Good Water document was placed in such a relation on to other statements, as to make the impression that we had given our full and willing assent to the entire letter of June 22d. The Com. on that Report, of which Dr. Beman was chairman, say, "The great end aimed at by the Pru. Com. in their correspondence with these missions for several years; and by the Board at their last annual meeting; has been substantially accomplished."