SOME NOTES ON ARBOR LOW AND OTHER LOWS. 



loS 



north and another 30° east of north (which may be 

 readily done by describing an equilateral triangle with its 

 base due east and west and its apex due south) we shall find 

 that the line 30° west of north passes exactly through the middle 

 of the northerly gateway or entrance to the " circle." Con- 

 tinuing it farther it passes exactly through the centre of a 

 nearly semi-circular depression in the hills against the sky line, 

 formed by Chelmorton Low to the right, and Brown Edge to 

 the left. This cup-shaped hollow is so marked that it is one 



- Section N?I. -• 

 Arbor Low to C hinley Churn 



Scales 



f Horizontal, 6 miles 

 \ Vertical, 600 feet 



to an inch. 



of the most conspicuous objects to be seen from Arbor Low. 

 Producing the line still farther, it passes exactly through the 

 summit of Chinley Churn, at a distance of about fifteen miles 

 (see Section No. i). This line is almost exactly horizontal. 

 Given a clear day, it is possible (but only just possible) to see 

 the point of the hill (Chinley Churn) through the before- 

 mentioned hollow, the lowest point of which nearly obstructs 

 the view. The section along this line shows this clearly, and 



