66 



BATHYMETRICAL SURVEY OF 



the other lochan weeds were seen in several places, with a little open 

 water in the eastern half. 



To the north of the north-eastern end of Loch Laidon lies the 

 little Lochan a' Chlaidheimh, where three counties (Perthshire, 

 Argyllshire, and Inverness-shire) meet. This lochan was visited on 

 May 14, 1902, but was not sounded, as there was no boat on it. It is 

 evidently very shallow in all parts, full of rocks and boulders, a rock 

 showing above water even in the very centre, and all along the shores 

 rocks are numerous, extending in lines out from the shore. A couple of 

 miles to the east of Lochan a' Chlaidheimh lies Lochan Sron Smeur, 

 next to be dealt with, on which there was a boat. 



FIG. 19. LOCHAN SRON SMEUR. 



(Photograph by H. C. Lamb.) 



Lochan Sron Smeur (see Plate XVIII.). Lochan Sron Smeur (or 

 Sron Smear) is situated a little to the east of the road running from 

 Rannoch to Loch Ossian, and is said to contain small black trout, but 

 is strictly preserved. It is over half a mile in length, less than a quarter 

 of a mile in maximum breadth, the mean breadth being one-seventh of 

 a mile, or 25 per cent, of the length. Its waters cover an area of over 

 50 acres (or about one-twelfth of a square mile), and it drains an area of 

 nearly two square miles, nearly twenty-four times the area of the loch. 

 It was surveyed on May 12, 1902, the maximum depth observed being 

 33 feet. The volume of water contained in the lake is estimated at 

 22,592,000 cubic feet, and the mean depth at 10'3 feet, or 31 per cent, 

 of the maximum depth. The loch is of simple conformation, the western 



