In this hall (or _atrium_, to speak classically) the clients and visiters of inferior rank were usually received. In the houses of the more "respectable," an _atriensis_, or slave peculiarly devoted to the service of the hall, was invariably retained, and his rank among his fellow slaves was high and important. The reservoir in the centre must have been rather a dangerous ornament, but the centre of the hall was like the grass-plat of a college, and interdicted to the passers to and fro, who found ample space in the margin. Right opposite the entrance, at the other end of the hall, was an apartment (_tablinum_,) in which the pavement was usually adorned with rich mosaics, and the walls covered with elaborate paintings. Here were usually kept the records of the family, or those of any public office that had been filled by the owner: on one side of this saloon, if we may so call it, was often a dining room, or _triclinium_; on the other side, perhaps, what we should now term a cabinet of gems, containing whatever curiosities were deemed most rare and costly; and invariably a small passage for the slaves to cross to the farther parts of the house without passing the apartments thus mentioned. These rooms all opened on a square or oblong colonnade, technically termed peristyle. If the house was small, its boundary ceased with this colonnade, and in that case its centre, however diminutive, was ordinarily appropriated to the purpose of a garden, and adorned with vases of flowers placed upon pedestals, while under the colonnade, to the right and left, were doors, admitting to bed rooms,[1] to a second _triclinium_, or eating room, (for the ancients generally appropriated two rooms at least to that purpose, one for summer and one for winter, or perhaps one for ordinary, the other for festive occasions;) and if the owner affected letters, a cabinet, dignified by the name of library,--for a very small room was sufficient to contain the few rolls of papyrus which the ancients deemed a notable collection of books. [Footnote 1: The Romans had bed rooms appropriated not only to the sleep of night, but also to the day siesta (_cubicula diurna_.)]