THE FRESH-WATER LOCHS OF SCOTLAND. 
223 
The only extensive basin in the islands is the Harray basin, which 
drains 60 square miles of country, and includes five lochs which were 
surveyed. Lochs Hundland and Boardhouse are in one basin, the Muckle 
and Peerie Waters in Eousay are in another ; all the other lochs drain 
independently into the sea, The lochs surveyed thus fall into eight distinct 
basins. The shores of all the lochs slope at a very low angle, and are 
paved with flat stones, so that approach to the shore in a boat was usually 
difficult, except at spots artificially deepened. 
Though some of the lochs were partly overgrown with weeds, very 
commonly the bottom was free from weeds, and could be seen in the 
deepest parts. The paving of flat stones could be seen to continue all 
