184 Proceedings of the Royal Physical Society. 



Choosing a tract on the watershed of England, lying south- 

 ward from Spadeadam Waste, in the parish of Lanercost, 

 Cumberland, a monotonous rolling slope covered with long, 

 low drums, from the trend of which it might be inferred that 

 the drift had been well drawn out in the direction of ice-flow, 

 I ascended the streams, and at favourable points (I preferred 

 points at which I had as nearly as possible lost my bearings 

 among their windings) set myself to orientate from its struc- 

 ture. The following list of the trials made will indicate the 

 extent of my success. The rock striations of the neighbour- 

 hood vary between E. 10 N". and E. 20 S.^ 



Trial No. Direction Indicated. 



In the cases marked indeterminate I failed to "agree 

 upon a verdict." But in general, exercising proper care, and 

 taking one stone with another, and having regard, especially, 

 to such groups of well-glaciated spindle-shaped stones as 

 agree in their trend, and serve as the index-houlclers of the 

 sections, the verdict may be given with considerable confi- 



1 It is quite wortli noting that while the rock striations are generally east 

 or a little south of it, the trend of the drums is almost invariably north of 

 east, though generally less than twenty degrees. 



^ From this point downwards the observations were made on lower ground 

 further west. 



