Light is admitted only solution manual mechanics the doorway. Sometimes a few pillars, left standing in the rock at the time of excavation, give this chamber the aspect of a little hypostyle hall. Other chapels there contain six or eight, and are very irregular in plan. One tomb, unfinished, was in the first instance a simple oblong hall, with a barrel roof and six columns. Later on, it was enlarged on the right side, the new part forming a kind of flat-roofed portico supported on four columns (fig. The false door of the olden time became a niche cut in the end wall, almost solution manual mechanics facing the entrance.