This was also an interesting day in consequence of the return of Orson Pratt to the quorum of the Twelve. He had returned & repented in dust & ashes, as it were for opposing Joseph & the Twelve &c. [Upon returning from his mission, Pratt was upset at his wife's claim Joseph had approached her about plural marriage during his absence.] We met at Brigham Youngs the first Presidency & the Twelve & conversed over the subject & Orson Pratt desired much to return to the quorum of the Twelve. We had an interesting time together.
We then assembled at the river & Joseph the Seer went into the river from the Ice & Baptized Orson Pratt & his wife & widow Granger. Joseph confirmed them & ordaind Orson Pratt to the Apostle-ship & his former standing which caused Joy to our hearts.
Elder Amasa Lyman who had been appointed in his stead as a member of the quorum of the Twelve was taken in to the first Presidency which left the place again vacant for Orson Pratt.
[Source: Wilford Woodruff's Journal: 1833-1898 Typescript, Volumes 1-9, Edited by Scott G. Kenney, Signature Books 1993, http://amzn.to/newmormonstudies]