The Constitution having been adopted, the doors of the Committee Rooms on Sacramento Street were opened for initiation into the body.  The greatest caution was exercised to prevent the admission of any disreputable or unreliable man.  Every person presenting himself was carefully scrutinized at the outer door by a trusty guard and at the stair head within by another; and if unknown to them, was required to be vouched for by two respectable citizens.  From Thursday the 15th until Saturday the 17th at two o’clock P. M. a crowd of people were constantly pressing forward for admission.  On Thursday both battalions of the City military refused to act further as a guard upon the Jail; and the companies for the most part disbanded; several of them reorganizing as part of the Vigilance Committee force.  The defense of the Jail being thrown entirely upon the Sheriff; he placed arms and ammunition in it; and made strenuous efforts to provide a force which might suffice with his Deputies, the Police & co. to accomplish that object.  On Friday his Deputies were very busy in serving printed notices upon all citizens whom they could induce to receive them, or to listen to their reading.  The summons was to meet at the Fourth District Court Room in the City Hall at half past three o’clock to aid him in keeping the peace.  The meeting took place at the time and place appointed, but for various reasons, did not prove a very decided success.  The replies made when the question was propounded to each individual whether he was prepared to proceed with the Sheriff to the Jail to defend it against all assailants, were very various.  A merchant said he had been summoned, but he refused most positively to move, and wished it to be most distinctly understood that he was not a member of the Vigilance Committee, nor did he intend to act against it.  A lawyer declined serving, and on his reason for doing so being required, said he was afraid; as he was afterwards in the ranks of the Vigilance Committee, with a musket on his shoulder, it may be presumed that his fear was of fighting against the people.  A medical man professed great doubts about his ability; said he was not accustomed to the use of firearms, and thought it not unlikely that he might wound himself or kill his neighbor.  At length, a party started with the Sheriff for the Jail; but whether their sober second thought was discouraging; or they had no stomach for the fight; or found their courage oozing out of their finger ends; the number began to diminish immediately after starting; at every corner some would detach themselves from the group; at every saloon or restaurant a distressing hunger or thirst would silently but imperiously demand a halt; and as the Jail was neared, a light pair of heels was frequently put in requisition without the slightest ceremony.  As might be supposed, the number that finally reached their destination, was distressingly out of proportion to the work to be done; and the Sheriff, after detaining them for a time, was reported to have dismissed them with but scant courtesy.