1'wrtnin the Date of Ktomhengc from its Orientation. 141 



arid 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, 



