We have so far considered the circles at Stonehenge, Stenness, the Hurlers and Stanton Drew, and the avenues in Brittany and on Dartmoor. Before I refer to my later work in the south-west of England or attempt to present a summary of the results of the inquiry, I think it will be convenient to turn for a time to another branch of it, for that there is another closely connected series of facts to be considered in relation to the monuments folklore and tradition abundantly prove. So far in this book I have dealt chiefly with stones--as I hold, associated with, or themselves composing, sanctuaries. We have become acquainted with circles, menhirs, dolmens, altars, viæ sacræ, various structures built up of stones. Barrows and earthern banks represented them later. The view which I have been led to bring forward so far is that these structures had in one way or another to do with the worship of the sun and stars; that they had for the most part an astronomical use in connection with religious ceremonials. The next question which concerns us in an attempt to get at the bottom of the matter is to see whether there are any concomitant phenomena, and, if there be any, to classify them and study the combined results. Tradition and folklore, which give dim references to the ancient uses of the stones, show in most unmistakable fashion that the stones were not alone; associated with them almost universally were many practices referred to on p. 26, such as the lighting of fires, passing through them, and dancing round them; in the neighbourhood of the stones and associated with the fire practices were also sacred trees and sacred wells or streams. Folklore and tradition not only thus may help us, but I think they will be helped by such a general survey, brief though it must be. So far as my reading has gone each special tradition has been considered by itself; there has been no general inquiry having for its object the study of the possible origin and _connection_ of many of the ancient practices and ideas which have so dimly come down to us in many cases and which we can only completely reconstruct by piecing together the information derived from various sources. I now propose to refer to all these matters with the view of seeing whether there be any relation between practices apparently disconnected in so many cases if we follow the literature in which they are chronicled. We must not blame the literature, since the facts which remain to be recorded now here, now there, are but a small fraction of those that have been forgotten. Fortunately, the practices forgotten in one locality have been remembered in another, so that it is possible the picture can be restored more completely than one might have thought at first.