Meanwhile progress in the preparations for the muster of the regiment into the service of the United States had not been delayed. Colonel H. E. Converse, A.Q.M.G., assisted by Colonel F. B. Stevens, A.D.C., had been on duty at the post, representing the State in the final settlement of property accountability on the part of the battery commanders, and as the result of their labors the title to the arms and equipments of the regiment was passed to the general Government. The physical examinations had been concluded, and recruits had been received for all vacancies. Muster-rolls and all other papers were ready on Saturday, May 7th, and on the evening of that day Colonel Pfaff reported his command as prepared for the mustering-in ceremony. It was first proposed to have this take place on Sunday, but on second thought it was considered better to defer it until the following day—which, as it proved, resulted in giving to "K" Company, of the Second Massachusetts Infantry, the honor of being the first command in the State to complete its actual muster. [Illustration: BVT. LIEUT.-COL. CARLE A. WOODRUFF, U.S.A. (Major 2d Artillery.) Mustering-in Officer for the Regiment. ] Contrary to the prevailing rule, Monday, the 9th of May, proved to be a sunny and pleasant day. Early in the morning, the regiment was formed in its battery streets, in readiness for its entry into the volunteer army. Promptly at eight o'clock, Major Carle A. Woodruff, Second United States Artillery, commanding the post, and with it the other defenses of Boston Harbor, took his station before regimental headquarters, in readiness for the ceremony. The regiment felt itself honored by his detail as its mustering-officer: a typical American soldier, he had received the brevets of captain, major, and lieutenant-colonel for gallant and meritorious services at Gettysburg, at Trevillian Station, and during the Civil War as a whole, while he also had been decorated with the medal of honor for distinguished gallantry in action at Newby's Cross Roads. He had been closely identified with the regiment since its change from the infantry to the artillery arm, and its officers held him in the warmest esteem.