Let those who question this simple origin for these circles study any one of them with as many or as few scientific instruments as they wish; then, after allowing for the variation of the obliquity, nature’s almanac is there to be read within the oldest astronomical observatory known to man. A word as to the age of the circles. Sir Norman Lockyer deduced from the variation of the obliquity in relation to the avenue and the Friar’s Heel at Stonehenge, that the temple must have been erected about the year 1680 B.C., or within a margin of 200 years of that date. Professor Gowland, as the result of the excavations conducted by him in 1901, arrived at practically the same period, when he inferred that it was constructed by “the men of the Neolithic or, it may be, of the early Bronze Age.” The assumption in these pages is that Stonehenge was the first and not the last of its series. If that be correct, it follows that the design must have been introduced by the new race, that of the Bronze Age, when they invaded this country from the south. The Neolithic tribes had been here for thousands of years before B.C. 1500, and it is unlikely that they, to whom metal was unknown, attained the architectural skill to erect a colossal and uniform temple. It is true that with one possible exception no trace of metal was found during the recent excavations at either Stonehenge or Arbor Low; but on the other hand, all the interments (with again one exception, and that of late date) found in circles are of the Bronze Age. These interments, of which one instance was in a small circle on Stanton Moor, do not necessarily indicate any sepulchral purpose for these monuments, but rather suggest that sometimes the priest himself would be laid to rest in the shrine of his order. Again, the general character of the numerous tumuli usually surrounding the momuments is of the Bronze period, and there seems to be some affinity between the “cup and ring” designs of the rock carvings and the plan of these circles. One fact is certain—that as a class they are not of any later times, for upon the vallum of Arbor Low stands the great “low” which yielded clear evidence of a burial of one who worked with bronze, and similar proof was furnished by the discovery of a like interment in the summit of Gib Hill.