Or the Power of Rainfall in Denudation. 221 



the 2 8 til August, the hills over the eight miles of their flanks 

 specified appeared covered with foam ; it thundered and 

 lightened the while, and the sleepers along the burnside at 

 Dollar were awakened by harsh rasping sounds of huge 

 boulders grating, capsizing, and breaking, and above all the 

 thunderino- noise of a head wave rushino- down from the hills. 

 This lasted but a quarter of an hour, though it appears to 

 have been the aoent of chanoe alono; the line of the flood's 

 action. 



At Tillicoultry the mountain stream runs down a street 

 to join the Dollar at Glenfoot. There are several factories 

 along its course. The street was covered with good sized 

 boulders which impeded carts a month after the flood. Here 

 it was that a manufacturer was swept away, and drowned 

 in the vain attempt to save two of Ms workers. 



At Harvieston House, about a mile above Tillicoultry, a 

 small stream descends almost in a straight line from the 

 King's Seat, 2111 feet, to the 200 feet contour line; it carried 

 mud, water, and cUhris down in its mad course, and, on 

 reaching the turnpike road, carried off the bridge fording it, 

 besides knocking down a well-built stone wall, and thus 

 rendering the turnpike impassable. A little above this the 

 torrent made a new channel in the well-nigh perpendicular 

 hill side, making a scarp twenty feet broad, and removing the 

 surface soil of a depth of five feet down into the valley. 



But it was at Dollar where the flood made its most inter- 

 esting geologic lessons on a large scale with considerable 

 municipal damage, though happily with no loss of lives. The 

 Dollar Burn is like the central portion of the letter Y on 

 the Ordnance map, running into the Devon below the 

 town. The left fork is the Burn of Sorrow, and the right the 

 opposite streamlet from AVhitewisp Hill ; both touch a con- 

 tour line of 2000 feet. Castle Campbell is situated at the 

 junction of the two forks of the letter. It was along the 

 upright stem, beginning at the Gloom Hill, that the flood 

 effected its ravages. These are delineated in detail in the 

 accompanying plan on the 26-inch Ordnance Survey map, 

 prepared at my request by Mr John Cram of Dollar. It 

 should be premised that the physiography of the Ochils here 

 VOL. IV. z 



