Ever since 1838, when Mr. Gally Knight published his Normans in Sicily,” with a folio volume of drawings by Mr. George Moore, who accompanied him on his Sicilian tour, the cathedral church of Cefalú has been known to antiquaries and architectural students as the most important example of the earliest Sicilian Norman pointed style. Many years later it was visited by Professor Freeman, who unhappily did not survive to carry his Sicilian history into the medieval period; had he done so there can be little doubt that the present paper would have been wholly superfluous. The late Mr. Fergusson, the architect, also seems to have been familiar with the main features of the architecture, but whether from Mr. Knight's work or from actual inspection I am not in a position to say.