30 
KENDALL : THE GLACIER LAKES OF CLEVELAND. 
south-east. So that whilst there would be a considerable lake 
to discharge by the Foulsike overflow, there would be only space 
for a series of small narrow lakelets along the southern edge. 
These lakelets appear to have drained by a marginal channel 
trenching the face of the escarpment, which at last attained the 
depth of 70 feet, and the lower part of which is now occupied 
by Burn-Howe Beck (Plate XII.). 
The recessed character of the grit escarpment brought about 
— as the ice-edge retreated — the formation of two other marginal 
lakes similar to that in the valley of Kirk-Moor Beck, and each 
of these had its own separate overflow channel cutting through 
the narrow watershed between the Robin-Hood's Bay drainage- 
slope and the great intercepting drain of Jugger-Howe Beck. 
These overflows doubtless originated in the channels produced 
by streams running directly off the ice-front itself as it slowly 
retreated. 
We now have the recess of Robin Hood's Bay occupied by 
three lakes — Kirk-Moor Lake on the north, Evan-Howe Lake 
in tlie centre, and Blacksmith-Hill Lake on the south. 
The first of these was drained by Foulsike, and the second by 
a gigantic trench, Evan-Howe Slack, a valley about half a mile 
long, 100 yards wide across the floor, and nearly 100 feet deep. 
During the shrinkage of the ice-lobe, the spur separating 
this lake from Kirk-Moor Lake to the northward was gradually 
uncovered, and, as the outlet of Evan-Howe Lake was lower 
than that of its neighbour, channels were cut across the lower 
parts of the spur whereby Kirk-Moor Lake was drained into 
Evan-Howe Lake. Therefore the Foulsike overflow now became 
functionless. 
The southern lakelet was drained by the Blacksmith Hill 
overflow, which is a gorge almost exactly comparable in its 
dimensions with Evan-Howe Slack (Plate X.). It is about 
1,000 yards long, and 50 to over 100 feet deep ; a small stream 
occupies about two- thirds of its length. The intake is about 
510 feet above O.D., but, as in all other large channels, there is 
a good deal of peat in the floor. The lake was probably, from its 
inception, fed by the drainage previously flowing down Burn- 
Howe Dale, which channel was consequently abandoned. Tlie 
