OF THE EARN AND TEITH. 



161 



nal structure. If it be said that these in sketch 11 are the margins of a lower 

 lake, there is, first, the difficulty of accounting for their being so exactly the 

 same height above the water, and then there is the fact of their continuity 

 down past all supposed barriers at Gart or elsewhere. Leaving the pass of 

 Leny, and going on towards Callander, we find it is for the most part on these 

 terrace levels that the new west end villas are built ; and when the railway was 

 being cut in 1867, it was striking to observe the close resemblance which the 

 fine grey sands, with their false beddings, and the coarse gravels, bore, 

 both in their structure and relative positions, to those seen in the sections on 

 Loch Lubnaig.* 



r^y^K _ 



i 



Sketch 11. — Looking from below the Pass of Leny towards Callander. 



Further to the east it would be easy to give from different points of the 

 river course examples of the threefold levels ; but it may be interesting to take 

 one from its great feeder, the Keltie, so well known as forming the Falls of 

 Bracklin. It is seen (sketch 12) a little above its junction with the Teith, 

 and the view will serve to show that the same system found on the main stream 

 pervades also the tributaries. The upper level presents itself in two stages, 

 and to this fact we shall afterwards refer. 



The succeeding portion of the Teith, down as far as Doune, shows a con- 

 tinual succession of the same deposits. The village of Dalvaich especially lies 

 in the midst of a series of these terraces, deserving a far more careful examina- 

 tion than it was in my power to give them. They may be followed down 

 through the grounds of Lanrick Castle, and come out well at the fine old 

 churchyard of Kilmadock. But one of the most striking examples either on 

 the Earn or Teith is that given in sketch 13, above Deanston, on the opposite 



* To illustrate this, two sections are given in Plate IV. Pig. 2 is from the terrace on the 

 shores of Loch Lubnaig ; fig. 3 is from the railway cutting at Callander. In both the fine grey lami- 

 nated sands, with their false beddings, are seen to have been denuded in a remarkable way, and are 

 overlaid by coarse gravels. 



VOL. XXVI. PART I. 2 U 



