The mess uniform consists of a white mess jacket upon which the shoulder straps are worn; a white waistcoat; dark blue plain trousers, and black shoes. There is no blue mess jacket and no evening dress coat. [Illustration: Austrian Navy. Officers’ sleeve decorations indicating rank 1. Admiral 2. Vice Admiral 3. Rear Admiral 4. Captain 5. Commander 6. Senior Lieutenant 7. Lieutenant 8. Sub Lieutenant 9. Midshipman 10. Naval Cadet 11. Surgeon General 12. Staff Officer with rank of Rear Admiral] With the frock coat uniforms a plain black silk necktie is worn tied in a flat double-bow knot. The rank is indicated on the frock coat and upon the blue service coat by stripes of gold lace upon the sleeves above the cuff. In the case of officers of flag rank a gold Austrian Imperial crown is worn above the stripes. These stripes for the different grades of rank are shown in the accompanying illustration. On the white service coat the rank is indicated by stripes upon the shoulder straps in the same manner as in the United States Navy, these stripes being of the same number, widths and arrangements as upon the sleeves of the frock and service coats. The corps or branch of the service to which an officer belongs is indicated by the “curl” in the upper stripe of the rank stripes upon the sleeve and shoulder strap, and by stripes of colored silk between the gold rank stripes for the different Staff corps. These distinctive colors for the different corps or branches are:— Engineers Gray. Medical officers Black. Naval Constructors Crimson. Paymasters Light blue. Professors Dark blue. White gloves are prescribed for all uniforms. Medical officers of flag rank wear an eight-pointed gold star above the rank stripes on the sleeves, other Staff officers of flag rank wear a four-circle rosette there, and Medical officers wear as a distinctive device on the shoulder strap over the rank stripes the rod of Esculapius entwined with a serpent in silver. Midshipmen at the Naval Academy wear a dark blue double-breasted round-about jacket with a turn-down collar and two rows of gilt buttons down the front, a straight visored blue cap, dark blue trousers and black shoes, for dress and a uniform similar to that worn by the seamen, for work and drills. Chief Warrant officers and Warrant officers wear dress and service uniforms like those of commissioned officers, and Chief Petty officers wear similar uniforms to those of Warrant officers except that the specialty or branch marks are worn on the sleeves between the elbow and the shoulder. The rank of Chief Warrant officers, Warrant officers and Chief Petty officers is indicated by gold stripes upon the sleeves above the cuffs as follows:—