Reference may here be made to the ancient millstones, for hand use, made of Hertfordshire pudding-stone, and known as querns, of which the writer gave two fine specimens from Harpenden to the British Museum. Both stones have one flat and one convex surface, but the convexity is much greater in the upper stone, which is almost conical, and is completely perforated at the centre. When in use, a stick, to serve as the axis of rotation, was inserted in this hole and received in a socket in the nether stone. The labour involved in making these pudding-stone querns must have been enormous. With the Saxon period we reach the age of church building; but apart from such portions of certain churches as are of that age, Hertfordshire is exceedingly poor in evidence of the Saxon dominion. A glass Anglo-Saxon basin, together with a bronze Frankish pot of late sixth or early seventh century work, was, however, discovered at Wheathampstead in 1886. Anglo-Saxon relics are believed also to have been unearthed at Redbourn at a very early period, when they were attributed to St Amphibalus; and a Saxon burial-place appears to have been found near Sandridge in modern times, although unfortunately ploughed over. Apart from the above, there are only a few isolated “finds,” such as of the coins known as minimi, and of a gold ornament discovered at Park Street in 1744. 16. Architecture. (_a_) Ecclesiastical--Abbeys and Churches. The architecture of Hertfordshire buildings may be most conveniently discussed under three separate sections, namely:--(_a_) ecclesiastical, or buildings related to the church; (_b_) military, or castles; and (_c_) domestic, or dwelling houses and cottages.