Of the private apartments the first to be mentioned is the peristyle, which usually lay behind the atrium, and communicated with it both through the tablinum and by fauces. In its general plan it resembled the atrium, being in fact a court, open to the sky in the middle, and surrounded by a colonnade, but it was larger in its dimensions, and the centre court was often decorated with shrubs and flowers and fountains, and was then called _xystus_. It should be greater in extent when measured transversely than in length,[9] and the intercolumniations should not exceed four, nor fall short of three diameters of the columns. Of the arrangement of the bed-chambers we know little. They seem to have been small and inconvenient. When there was room they had usually a procœton, or ante-chamber. Vitruvius recommends that they should face the east, for the benefit of the early sun. One of the most important apartments in the whole house was the triclinium, or dining-room, so named from the three beds, which encompassed the table on three sides, leaving the fourth open to the attendants. The prodigality of the Romans in matters of eating is well known, and it extended to all matters connected with the pleasures of the table. In their rooms, their couches, and all the furniture of their entertainments, magnificence and extravagance were carried to their highest point. The rich had several of these apartments, to be used at different seasons, or on various occasions. Lucullus, celebrated for his wealth and profuse expenditure, had a certain standard of expenditure for each triclinium, so that when his servants were told which hall he was to sup in, they knew exactly the style of entertainment to be prepared; and there is a well-known story of the way in which he deceived Pompey and Cicero, when they insisted on going home with him to see his family supper, by merely sending word home that he would sup in the Apollo, one of the most splendid of his halls, in which he never gave an entertainment for less than 50,000 denarii, about $8,000. Sometimes the ceiling was contrived to open and let down a second course of meats, with showers of flowers and perfumed waters, while rope-dancers performed their evolutions over the heads of the company. The performances of these _funambuli_ are frequently represented in paintings at Pompeii. Mazois, in his work entitled "Le Palais de Scaurus," has given a fancy picture of the habitation of a Roman noble of the highest class, in which he has embodied all the scattered notices of domestic life, which a diligent perusal of the Latin writers has enabled him to collect. His description of the triclinium of Scaurus will give the reader the best notion of the style in which such an apartment was furnished and ornamented. For each particular in the description he quotes some authority. We shall not, however, encumber our pages with references to a long list of books not likely to be in the possession of most readers.