After instructions were given us by Col. Johnson, and the Commission had exhausted its eloquence upon the “Children of the Great Father at Washington,” and had started for the Fresno, we were allowed to go in pursuit of some very sly marauders who had stolen into our camp in the night, loosened and run off some of our animals, and taken some others herded in the foot hills, but no extended operations were allowed, as Major Savage ordered us to be in readiness for a campaign against the Yosemities, when the first big storm should come, that would prevent their escape across the Sierra Nevada. After a few days’ delay the storm did come with continued violence, as recorded. In view of the facts and dates here given how absurd the statement that we did not go to the Yosemite “until about the 5th or 6th of May, 1851.” Our idleness in camp from Feb. 10th and the patient indulgence of the Commissioners, while waiting for the results of our first operations, surpass belief. And now I reluctantly notice an error of statement by Mr. Julius N. Pratt in the _Century_ Magazine for December, 1890. Had the usual courtesy been extended of allowing me to see and answer Mr. Pratt’s erroneous impressions in the same number, I am convinced that he would have kindly withdrawn his article. I am led to this belief, not alone from letters received, but from the _internal evidence_ of an upright character conveyed by Mr. Pratt’s graphic account of “A Trip to California by way of Panama in 1849,” in the _Century_ for April 1891. The _Century_ Magazine is a most powerful disseminator of truth, or error, and though I cannot hope for a complete vindication through this volume, its readers shall have the facts of “The Date of Discovery” set before them, “for a truthful regard for history” and my own self-respect require it. In the _Century_ Magazine for September, 1890, page 795, is an article from my pen which gives the date of discovery of the Yosemite as March, 1851. Mr. Pratt, in the December number following, assumes, with “a truthful regard for history,” that I was in error, and gives about “January 10th, 1851, as the approximate, if not exact date of discovery.” Many of the men whom Mr. Pratt supposed to have been the discoverers, were, or became, my own comrades. When Mr. Pratt’s article appeared, I at once sent a reply, but it received no recognition. Knowing that Mr. Theodore G. Palmer, of Newark, New Jersey, was in the only engagement occurring with Indians in Mariposa county at the time given by Mr. Pratt as the date of his supposed discovery of the Yosemite, I wrote, requesting Mr. Palmer to call on the editor of the _Century_ in my behalf.