It will be understood that after passing through the first assorters' hands the notes are in two lots of "fit" and "unfit," each lot being in bundles of one thousand notes of one denomination, and each bundle composed of packages of notes of single groups. The next operation is to mass all the packages of all denominations composing the day's assortment by groups. This is done by the first assortment teller, who distributes the packages on a low table, according to the marks of the assorters, and straps the packages of each group into a bundle on which he marks the number of the group and the amount. The distinctions of "fit" and "unfit" are still maintained. There are then forty-four bundles of "fit" notes and a like number of "unfit," each bundle containing all denominations of notes of the banks composing a single group. In this shape the money is on the day following put in the vault of the agency. This receptacle is a room whose massive iron walls would not be likely to tempt burglars even in the most inviting surroundings. It is situated in the basement of the north wing of the Treasury. The ponderous double doors are secured by two combination locks of the most approved construction, one of which is set and can be opened only by the superintendent and the chief bookkeeper, and the other only by the assorting teller and his assistant. There is, besides, on the outer door a chronometer lock which would defy the efforts of all those officials together, and of all other persons whatsoever until the appointed hour when the vault is to be opened in the ordinary course of business. Along the interior of the walls are compartments in which are stored redeemed notes, those of each group by themselves, until they shall be removed for assortment by individual banks. The vault usually contains about ten millions of dollars. The money which we have followed thus far is packed into a cart and hauled into this place, where it is deposited group by group with the rest. It is customary to assort the currency of from one to four groups by banks each day. Let us follow rapidly one of these groups through the remainder of the processes. The money of a group accumulated from day to day in the vault is in the morning transported to the assorting room, where it is delivered to the second assortment teller. By him the bundles are opened, the inventory verified, and the packages separated by denominations, reference being had in this process to the upper note of each package. The packages of each denomination are then strapped together by means of cardboards and rubber bands, and the group number, the denomination, and the amount marked upon each bundle. Next morning the money is delivered in this shape to the second assorters.