The remains of 39 villas have been discovered, up to the present, in the region which was covered by lapilli and ash during the eruption of Vesuvius in A.D. 79. Twelve of these were excavated between the years 1749 and 1782, in the vicinity of Castellammare di Stabia; the rest have been excavated during the last half-century, either in the immediate neighbourhood of Pompeii or in the territory of the modern comuni adjoining it (Boscoreale, Scafati, Gragnano). A list of 36 of the villas arranged in the chronological order of their excavation is given in Rostovtzeff's Social and Economic History of the Roman Empire. Rostovtzeff concludes his note with the words ‘Useful work could be done by a scholar who would devote a little time and care to a study of the Campanian “villae rusticae,” and endeavour to investigate the history of the buildings.’ Unfortunately all of the villas were buried again after their excavation, and, in investigating the history of the buildings, we have only the scanty information furnished by the reports, which, often amounts to nothing at all. Inability to see the buildings, however, would not be such a great disadvantage if, at the time of the excavation, adequate records had been made of the building materials used, and the methods of their use.