Small tables or stands of bronze supported by three slender legs were called tripods. The top was flat, but not infrequently surrounded by a deep rim, making a convenient receptacle for light objects. The rim of the example shown in Fig. 191 is ornamented with festoons and bucrania, while the upper parts of the legs are modelled to represent winged sphinxes. This stand was not found in the temple of Isis, as is often stated, but probably in Herculaneum. [Illustration: Fig. 191.--Bronze stand with an ornamented rim around the top.] The bisellium, the 'seat of double width,' was a chair of simple design without a back, used in the Theatre and Amphitheatre by members of the city council and others upon whom the "honor of the bisellium" had been conferred. The remains of one with bronze mountings have been restored. The restoration, however, does not seem to be correct in all particulars, and instead of presenting it we may refer the reader to the somewhat conventional bisellium carved on the tomb of Calventius Quietus (Fig. 242). [Illustration: Fig. 192.--Lamps of the simplest form, with one nozzle.] The lamps are found in a great variety of forms. The essential parts are the body, containing the oil, which was poured in through an opening in the top, and the nozzle with a hole for the wick (Fig. 192). Hand lamps were usually provided with a handle, hanging lamps with projections containing holes through which the chains could be passed. The opening for the admission of oil was often closed by an ornamental cover (Figs. 195, 196). In front of it, near the base of the nozzle, was frequently a much smaller orifice through which a large needle could be inserted to pick up the wick when it had burned out and sunk back into the oil, and air could be admitted when the cover was closed. [Illustration: Fig. 193.--Lamps with two nozzles. At the left, a hanging lamp; at the right, a hand lamp.] The material of the lamps was clay or bronze. The bronze lamps were more costly and ordinarily more freely ornamented. Those of clay were left unglazed, or covered with a red glazing like that of the Arretian ware; lamps with a greenish glaze are occasionally found. [Illustration: Fig. 194.--Lamps with more than two nozzles.] The light furnished by the wicks was dim and smoky. A more brilliant light was obtained by increasing the number of nozzles. Lamps with two nozzles are often found. These were sometimes placed at one end, the handle being at the other; sometimes in the case of hanging lamps, at opposite ends, as in the example shown in Fig. 193. Lamps with several nozzles are not infrequently met with. The shape is often circular, as in two of the examples presented in Fig. 194, one of which had six wicks, the other twelve. Sometimes a more ornamental form was adopted. Lamps having the shape of a boat are not uncommon; the one represented in Fig. 194 was provided with nozzles for fourteen wicks.