The first page of figures from Theoria Philosophiæ Naturalis from 1763. Figure 1 is the force curve which received so much attention from later natural philosophers such as Joseph Priestley, Humphrey Davy, and Michael Faraday. The ordinate is force, with positive values being repulsive, and the abscissa is radial distance.
The concept of "ley lines" is generally thought of in relation to Alfred Watkins, but the stimulus and background for the concept is attributed to the English astronomer Norman Lockyer . [3] [4] [5] On 30 June 1921, Watkins visited Blackwardine in Herefordshire , and went riding a horse near some hills in the vicinity of Bredwardine , when he noted that many of the footpaths there seemed to connect one hilltop to another in a straight line. [6] He was studying a map when he noticed places in alignment. "The whole thing came to me in a flash", he later told his son. [7] It has been suggested that Watkin's experience stemmed from faint memories of an account in September 1870 by William Henry Black given to the British Archaeological Association in Hereford titled Boundaries and Landmarks , in which he speculated that "Monuments exist marking grand geometrical lines which cover the whole of Western Europe". [8] Watkins believed that, in ancie...
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