THE FRESH-WATER LOCHS OF SCOTLAND. 



271 



to the entrance of the river Orchy, the length exceeds 24 miles, and is 

 nearly equal to the length of Loch Ness (including Loch Dochfour), 

 which most nearly approaches it in this respect. The loch is, on the 

 whole, very narrow less than a mile across, except at the junction of the 

 narrow arm with the main body, where, measured in certain directions, 



English Mile* 



FIG. 28. INDEX MAP OF THE ETIVE BASIN. 



the width may be said to exceed 2 miles ; bnt at other places the width 

 diminishes, and at one point is barely a quarter of a mile. The mean 

 breadth of the entire loch is about half a mile, or only 2'3 per cent, of 

 the length the smallest percentage observed in any of the lochs sounded 

 by the Lake Survey, recorded also for East Loch Scadavay in North Uist, 

 followed by 2-5 per cent, for Loch Shiel, and 3 per cent, for Loch Shin. 



