the Orvieto frescoes, [63], [86];

later works, [87];

altar-piece at Arcevia, [92];

last works, [98], [106];

drawings, [107], [110];

his imitators and influence, [111], [119]

Signorelli, Pier Tommaso, [15], [115]

Signorelli, Polidoro, [9], [115];

his death, [10]

Signs of the Destruction of the World, [82]