272 REPORT ON THE DENEHOLE EXPLORATION there is no doubt that it is one of the earliest of habits, yet one can- not but believe that *" this form of granary is the same as that between the Lena and the Oxus before the days of Arpad," and that it was either reintroduced or refreshed by the migrating hordes which came again and again from Central Asia, and peopled Russia and Europe with swarms of half savages. When M. Jourdain was in Spain in 1810, the smaller husbandmen had no barns, and kept their corn exclusively underground, but there is plenty of evidence to show that the custom has now declined. French writers state that the same has happened in France, and perhaps it may be said of most countries. Just as there has been a falling off of the habit of storing grain in pits in recent times, it may be shown that it was more common and wide-spread in mediaeval and earlier ages. M. Doyere says that all the towns of Spain had once collections of silos, which is certainly not the case at present. In searching for ancient silos, he came upon some interesting examples at Alcala; he could get no information about them, and he had to rely on his own observations, thus becoming personally acquainted with seventeen. He subsequently heard of about one hundred more of a like antiquity. He does not define the age, except by speaking of them as Moorish, though they may, from his description of the situation, be just as well of Roman age. The pits are close to each other. Some are filled up with surface rubbish, others less so; a result partially accounted for by the habit of passers by testing their depth by throwing great stones into them. From a small one which had a communication, of recent and accidental formation with another, he was able to enter and measure one of the large ones. This, which had a cone of rubbish at the bottom, could not have been less than ten metres deep, though the bottom was not reached. The mouth was narrow, originally narrower, and widening out gradually. This pit was excavated in a very hard rock, either with a pick or a hammer, some of the pick marks crossed each other. It once had a covering plate. Other such ancient pits have been met with at Cordova and elsewhere. It has always been the custom to store grain thus, from the earliest times in Spain, but it is very rare to find any account of the matter. In France it was a commoner custom to store corn in silos, in comparatively recent times, as at Le Quercy, etc., than it is now, and still more so in the mediaeval periods. Most of the instances recorded are, however, not merely pits, but souterrains, in which the