The following is from the History of Brigham Young of this date:
I wrote to Bro. Parley P. Pratt requesting him to learn the faith and desire of the saints, and those who were faithful and determined to remain so to counsel them to come to Utah; all others to remain in California which would be a strainer to the stream from that direction leading into the reservoir.
[History of Brigham Young, Aug. 19, 1854]
[Journal History of the Church of Jesus Christ of Latter-day Saints, Aug. 19, 1854, 1]
[transcribed and proofread by David Grow, Aug. 2006]