T?TE FRESH-WATEK LOCHS OF SCOTLAND. 
259 
From the table on page 258 it will be seen that in the twenty reservoirs 
under consideration 1065 soundings were taken, and that the aggregate area 
of the water-surface is about 3 square miles, so that the average number of 
soundings per square mile of surface is 355. The aggregate volume 
of water contained in the reservoirs is estimated at about 998J millions 
of cubic feet. The area drained by these reservoirs is 43f square miles, 
or about 14 times the area of the lochs. 
