THE FEESH- WATER LOCHS OF SCOTLAND. 201 



the usual irregular form, consisting of a number of narrow branches, 

 separated by conspicuous promontories, and contains several small islands. 

 It is shallow, with a few deeper holes, with depths of 25 feet in the south 

 portion, and 27 feet (the maximum) in the north portion. It is fully half 

 a mile in length. On June 3, 1904, there was a difference of 8*4 between 

 the temperature at the surface and that at 25 feet, a fall of no less than 

 0-4 being observed between 15 and 20 feet : 



Surface 60-4 Fahr. 



15 feet 59-4 



20 53-0 



25 52-0 



Loch Hunder (see Plate LXXVII.). Loch Hunder lies on the west 

 flank of the South Lee, as Loch Obisary lies at the foot of Eaval. It is 1 J 

 miles long by two-thirds of a mile in greatest breadth, and nearly a quarter 

 of a mile in mean breadth. The outline, though much indented, is simpler 

 than usual in the lochs of Uist. It is more like a valley loch, but the 

 presence of many islands indicates that it is not a simple basin. These 

 islands divide the loch into three distinct basins. The northern basin is 

 cut off from the middle basin by two large islands, the larger of which is 

 joined by an artificial causeway to the east shore. It has a maximum 

 depth of 38 feet. In the passage between the island and the west shore 

 the minimum depth is 7 feet. The middle basin contains the maximum 

 depth of the whole loch, 60 feet. It is separated from the southern basin 

 by a chain of three islands. The middle one, called Dim Ban, is in the 

 centre of the loch, and has fairly deep water both to the east and west. 

 The eastern island is connected with the shore by a causeway, and close to 

 it, on a smaller island, is a large Dim. Between the middle island and the 

 western one is a depth of 34 feet. The southern basin has a depth of 55 

 feet, a short distance south of Dun Ban. The volume of water in Loch 

 Hunder is 146 millions of cubic feet. The superficial area is about 185 

 acres, or fully a quarter of a square mile. The drainage area of 2^ square 

 miles includes Loch a' Chonnachair, which is a quarter of a mile distant, the 

 stream from it passing through a little loch occupying about half that 

 distance. The burn flowing from Loch Hunder to Loch Eport is only 40 

 or 50 yards in length. When surveyed on June 2, 1904, the loch was 

 22'55 feet above sea-level. There was a range of temperature of 7" from 

 surface to bottom, distributed as shown in the table appended : 



Surface 59-OFahr. 



10 feet 58-6 



20 ... 57'3 



25 53-6 



50 , 52-0 



