THE FRESH-WATER LOCHS OF SCOTLAND. 
243 
the entrance of the Glenaladale river, there is a twist in the 50-feet 
contour, where the water shoals from 55 to 20 feet. Still further down, 
opposite the entrance of the Allt na Dalach, sinuosities in the 50-feet 
contour occur on both sides of the loch, the water shoaling off the south- 
eastern shore from 47 to 35 feet, and off the north-western shore from 
41 to 19 and 22 feet. The last-mentioned shoaling occurs to the north- 
east of Eileanan Comhlach, at the entrance of the Allt a’ Ghiubhais, 
and it is curious to observe a similar shoaling on the opposite (south- 
west) side of the island from 41 to 18 and 21 feet, while between the 
island and the mouth of the stream a depth of 32 feet was observed. 
FIG. 41. LOCH SHIEL, FROM PRINCE CHARLIe’s MONUMENT. 
(Photograph hg Mr. T. N. Johmton, M.B., C.M., F.R.S.E.) 
Towards the lower end of the wide part of the loch, and almost due 
south of Eilean Druim nan Laogh (or Heron island, as it is now called 
in the district), there is, near the middle of the loch, a shoal covered by 
only 2 or 3 feet of water. During the visit of the Lake Survey the 
regular mail steamer was laid up for repairs, having shortly before 
struck on this shoal and damaged the propeller. The captain, of the 
steamer supplied information as to the position of the shoal, and the 
local gillie employed by the surveyors stated that in calm weather the 
bottom can be seen, but in the stormy weather prevailing at the time 
of the survey he was unable to find it, so that it must be of very small 
extent, for deep soundings were recorded near the spot indicated. The 
