On Sunday and Monday I was advised that many Californians had visited Pico at Workman's, and that the same story had been told them of his having returned to resume his gubernatorial functions, &c., and also that he should not report to me, but go direct to San Fernando, from whence he would communicate with you. The moment I became satisfied that he intended to adopt this course, I issued an order (copy inclosed) requiring him to report to me immediately in person. I sent my adjutant with a detachment of men to the ranch of Workman to deliver to Don Pio in person a copy of this order, with instructions to bring him in by force, in case he refused or even hesitated to obey. The adjutant returned here at twelve o'clock on Monday with information that the Don had left for San Fernando. I immediately despatched Lieutenant Davidson with a detachment of dragoons and a copy of the order, with instructions similar to those given Adjutant Bonnycastle. About five o'clock on Tuesday morning I received a visit from a gentleman named Reed, living at the mission of San Gabriel, who informed me that Don Pio Pico had arrived at his house quite late in the evening of Monday, on his way to San Fernando. Reed inquired if he did not intend reporting to me in person; he answered in the negative; when Reed assured him, if he attempted to pass my post without reporting, I would cause him to be arrested, and that he was aware of my being displeased at his passing through San Diego without reporting to the commandant of that post. Don Pio Pico, upon receiving this information, became alarmed, and requested Reed to come in and see me, to say he intended no disrespect, and would come and report at any hour I would name. Reed is a highly respectable man, and has ever been friendly to the American cause; and I gave him a copy of the order I had issued in regard to Don Pio, requesting him to deliver it, and say to Don Pio, he could come in at any hour he chose, within twenty-four hours. Accordingly about eight P.M., the same evening, the ex-governor came in. He was unaccompanied even by a servant, evidently desiring it should not be known he was in town. I received him kindly, told him I had no desire to treat him harshly, but that the American authorities must be respected, and if he had not come in I should certainly have arrested him. He informed me that he left Guaynas on the 22d of May, crossed to Mulige, which he left for California on June third, and arrived at San Diego, July sixth. He says that when he left Guaynas nothing had been heard of the action of the Mexican Congress upon the treaty, but it was generally supposed it would be ratified. He says the Mexican government did not answer any of his communications; and the moment he saw the armistice published in a newspaper, he determined to return home, as he supposed he could return with credit, under the stipulations of the armistice. He brings with him no