Then there are big mounds or heaps, called Barrows. All over the world, not only in Europe, but in northern Asia, in India, and in America, burial-mounds of various sizes have been met with. Some of these are oval in shape, and are called Long Barrows; others are round, and are called Round Barrows. The Long Barrows are thought to be the older kind, and were apparently the burial-places of great leaders. The Round Barrows were also burial-places, but those who raised them burned their dead. The great pyramids of Egypt are barrows, only they are made of stone, not of earth. At Silbury, in Wilts, there is a huge mound, covering about five acres of ground and some one hundred and thirty feet in height. Many interesting things have been brought to light when these many varieties of barrows have been properly and scientifically explored by men who have the knowledge and intelligence to "see" what there is to see, and who do not attack these old earthworks with the idea of coming upon some long-hidden hoard of gold or silver. Indeed, much damage has been done by folk who, from time to time, have rifled these mysterious old earthworks with that one, sordid idea. There is much yet to be done in the way of scientific exploration, and much to be learned. [Illustration: _Round Barrow_] [Illustration: _Long Barrow_] The circles of stones at Stonehenge and Avebury seem to have been connected with the worship of these early people. A writer, who has given much attention and study to the subject, gives us some idea as to how these huge stones were got into position at Stonehenge. He thinks that they must have been dragged thither by enormous numbers of men from the Marlborough Downs. "Trunks of trees ... pierced with holes for levers would furnish rollers to propel the stones to very near their destination. Then it is necessary to suppose the site of Stonehenge occupied by a mound, artificial or natural, the ascent being by an easy incline from the quarter whence these stones were brought. On the top of the mound we must suppose as many holes dug as there were upright stones to be placed. On the arrival of each stone it would be dropped into its hole; and, when all were thus placed, there would only remain the more easy task of laying on the imposts, each end of which has evidently been mortised on to the perpendiculars. The earth would then be dug away, leaving the structure complete."[4] [4] W. Long, in the _Wilts Arch. Mag._, p. 121. [Illustration: STONEHENGE [See page 12]] In 1918 Stonehenge was given to the nation, and we may hope that what is left of it will be carefully preserved in the time to come.