528 PKOF. T. m'k. hughes on some 



occurs in place close by on the north side ; and all stand on 

 pedestals of limestone. 



JN'os. i. and iii. are Silurian. Those in no. ii. belong to a different 

 horizon of the same limestone as that on which thej^ rest. 



The Cunswick boulders have higher ground in front of them in 

 the direct line of transport. 



The Parleton-Knot boulders are on ground sloping to the south, 

 but have a very steep hill on the north, up which the ice must have 

 been pushed. 



The Norber boulders are some on the north side, some on the 

 south slope of the hill up which they were transported. 



Now to examine these cases more in detail. 



The Cunswick-Tarn boulders are few in number. There were 

 probably many more, which have been broken up and used for 

 walling. Those which remain stand in a pasture north of the Tarn, 

 which lies in a drift-puddled depression in the Mountain Limestone 

 close under the cliff, towards which, owing to the northerly dip, the 

 beds are slightly inclined. The blocks consist of the roughly cleaved 

 Silurian rock which occurs immediately to the north. 



Pig. 1. — Boulder of Silurian, resting on Mountain Limestone^ 

 Cunswick Tarn, Kendal. 



This boulder must have measured originally about 8 X 6 X 3 ft. It has, however, 

 been broken, and only the larger part now rests on a pedestal, which rises 

 some 20 inches above the surrounding grass-covered limestone. The surface 

 of the pedestal is smoothed and furrowed roughly N. and S. 



The blocks rest upon pedestals of the Mountain Limestone, 

 standing some 12 to 20 inches above the surrounding rock. This is 

 not so obvious in the case of boulders rising out of pasture-land, as 

 on the bare tables of limestone seen on Parleton Knot or Norber 

 Brow ; but even here it can be made out by scraping a little round 

 them. 



The tops of the pedestals on which the boulders rest retain the 

 smooth surface given to them by the glacier, and have striae running 

 north and south. It looks as if just that part of the underlying 

 glaciated rock had been preserved which the boulder had protected 

 from the falling rain, aad over which it had prevented the growth 



