342 On the supposed Moraines of Glaciers in Scotland. 



and are each nearly 200 feet long, not in straight lines, but 

 of a serpentine form. The highest (No. 3. A.) is about 200 

 feet above the vale, running ncarlij horizontally across the 

 steep spur of the hill, and has three circular hollows in its 

 course, two about fifteen feet deep, and the third about thirty- 

 five, the tracks between being from 10 to 12 feet deep. The 

 next (No. 3. B.) commences close below the west end of that 

 horizontal one, bending to the right and left down hill, and 

 is more uniform in depth than either of the other two. It 

 contains two deep and finely i-ounded oval holes, one about 

 thirty, the other forty feet deep. The third (No. 3. C.) begins 

 near the middle of the upper one, and continues down hill in 

 a slanting direction towards the east : it has the most rugged 

 appearance of the three, the rock being bare and precipitous 

 upon the higher side, and terminating at the lower end with 

 a circular cavity about fifty feet deep. The rough markings 

 on the more precipitous or eastern sides of the hollows a and 

 c represent the bare rock partially covered with soil and vege- 

 tation ; but none such occur on the side of B, which runs down 

 hill with the ground nearly level on each side, covered with a 

 fine grassy surface. 



The sides of these gullies are very steep, although mostly 

 covered with a fine grassy surface. It is evident they had 

 been originally much deeper, having been greatly filled up by 

 debris, which from time to time has fallen from the heights 

 above*. By what means can we conceive these hollows to 

 have been scooped out of the rock, except by the agency of 

 water, and by water falling from a considerable height? The 

 rock seems favourable for being worn down in that manner, 

 the graywacke strata rising near to the perpendicular, and 

 the beds of the rock being thin, intersected with numerous 

 cutters (joints). Yet where is the Water ? None runs there 

 now, nor can ever have run there in the present state of that 

 locality. It seems to me likewise that these hitherto unac- 

 countable ravines have been clearly explained by M. Agassiz 

 in his description of the Cinix and Lajnaz, names given to 

 similar holes and guttered tracks which he had observed upon 

 the flanks of the Swiss Alps, and which, he says, have been 

 worn out by water pouring through fissures in the glaciers 

 while they were slowly pressing onwardf. 



* The Meigle Hill rises about 450 feet above the rude pillar represented 

 in the sketch No. 3. This pillar stands about 60 feet above the upper line 

 of hollows marked a, and is built on the lowest terrace I can trace in that 

 quarter, which is No. 10 of the series described in Chambers's Journal; 

 but others are more distinctly marked upwards to the south-west. 



t On the sides of the Swiss valleys, round holes, such as cascades make. 



