58 CHANNELS AND GLENS OF AYRSHIRE. 



deep glen in the rock, the buried glen this time being to the east 

 side of the present one, as is well seen at the head of the rocky 

 glen where a high bank of drift appears on that side, 30 feet of 

 it choking up the mouth of the old valley, the rock continuing for 

 some distance on the other side. 



River Ayr. — At Catrine the Water of Ayr has widened out its 

 valley a good bit, forming the hollow in which the town of Catrine 

 is situated. Between here and Ballochmyle "big brig" it has 

 left the old valley, cutting through the trap and sandstone of the 

 Permian formation. It again enters the old valley where joined 

 by the Lugar Water, but soon leaves it again, cutting deeply into 

 the Permian red rocks at Barskimming, where, for convenience of 

 the wayfarer, there are long tunnels (with daylights emerging on 

 the wall of the gorge) cut through the rock along the north side 

 of the stream. A short distance below Barskimming House the 

 Ayr wheels to the left and makes a breach into the side of the 

 old valley deposits, exhibiting a high scaur of boulder-clay with a 

 thick sand and gravel bed in its centre, the sand and gravel and 

 lower till containing marine shells. It immediately wheels to the 

 right, and then to the left, and cuts for a long distance more or 

 less through red rocks. 



Below Tarholm the Ayr wheels to the N.N.E. for about a mile, 

 cutting through carboniferous rock, then turns to the west and 

 cuts through rock till it comes near to Auchencruive House. 



The total length of the rock-gorges of the Ayr (excluding minor 

 features) is about six miles. The old drift-filled valley is mostly 

 to the south of the rocky gorges. 



Whitehaugh Burn. — Further up stream than the Garpel Farm 

 steading, the burn has left the old valley and cut a narrow 

 channel through rock, but beyond the rocky ravine it is carving 

 away at the drift deposits in the old valley, and has produced a 

 bit of scenery closely resembling that of the Windy Wizzen near 

 Loudoun Hill, but with the great difference of a stream flowing 

 through it. The drift-filled valley is to the east of the rocky 

 gorge. 



Greenock Water. — The Greenock Water above Chapelhouse 

 (a ruin) comes out of a small rocky cut to the left, having here 

 quitted the old valley, but only to a small extent. The drift-filled 



