1. The two cents must be paid at the time the letter is posted.

2. The name of the soldier or sailor, his class or description,

and the name of the ship, corps, or detachment to which he

belongs, must be specified in the direction of the letter; and

in the case of letters <i>sent</i> by soldiers or seamen, the

officer in command must sign his name and specify his rank,

and the name of the ship or regiment, corps or detachment,

which he commands.