38 
Again ; to obtain the proper direction of the line to the Sun 
Stone from the West corner of No. 55; the angle which that 
line makes with the East and West line being 41° 7’ 16” I 
marked off the length 720 of the said divisions due East from the 
said corner of No. 55. Then 

Log. Rad.—Tan. 41° 7’ 16” = 1°9410166 
Log. horizontal 720 = 2°8573325 
Log. perpendicular 628°5 = 2:7983491 
Therefore, the length of the perpendicular side from the 
extremity of the horizontal line was made 6285 of the divisions, 
and the sloping line drawn from the West corner of No. 55 to the 
extremity of the 628°55 line truly represents the position of the 
alignment from the Sun stone to the great trilithon at sunrise on 
the longest day when the Temple was building. I regret to find 
that when drawing the map, misreading the last figure of this 
perpendicular, I marked off 620 instead of 628 divisions, where- 
fore the Sun stone is placed on this map too much South by 
about the j part of an inch. 
8. From outer edge of No. 55 to Sun stone is 3400 inches. 
y. The centres of the tumuli (Nos. 92 and 93) are about 
391 inches apart according to Dr. Petrie. 
10. The distance between the inner faces of outlying stones 
Nos. 91 and 93 is 3396 inches. 
11. The diameters of the three outer earth circles respectively 
are 3595, 4045, and 4495 inches. 
12. The outlines of some stones extends beyond the blackened 
portion. This denotes that the enclosed part left white represents 
the amount by which that stone above ground projects beyond its 
base. 
The measurements printed below, which were taken by me in 
