Page:Proceedings of the Royal Society of London Vol 69.djvu/149

ascertain the Date of Stonehenge from its Orientation. and as the distance between it and its original companion is known both by the analogy of the two perfect trilithons and by the measure of the mortice holes on the lintel they formerly supported, we obtain by bisection the measure (viz. 11 inches) from its edge of a point in

Fia. 2. The stake placed on the fallen stone indicates the axis shown on Fig. 1, in relation to the leaning stone (on the left), and the centre of the 14 .E. trilithon.

the continuation of the central axis of the avenue and temple, and which has now to be determined very accurately. The banks which form the avenue have suffered much degradation. It appears from Sir 'Richard Colt Hoare's account that at the beginning of the last century they were distinguishable for a much greater distance than at present, but they are still discernible, especially on the northern side,