186 SOME NOVA SCOTIAN ILLUSTRATIONS 
kames, partly of sand and gravel, the main source of its 
materials, blue slate, would seem to have been derived from the 
south, not from the north, and from beds which are somewhat 
remote. The course of the ridge, across the general slope of the 
country and parallel with the coast, is also peculiar, suggesting a 
possible beach origin. 
Other good examples of kames or gravel ridges are to be 
seen in Shelburne County, between Clyde Village and Port 
Clyde, and at the head of a long, narrow promontory separating 
Negro Harbor from Port la Tour. In each of these cases the 
ridges are several miles in length, somewhat tortuous in their 
course, but with a general southerly trend, are from 20 to 40 
feet high, and usually just broad enough at top to afford room 
for a roadway, a use to which, in both of the instances given, 
they have been applied. 
But by far the most remarkable of such ridges is the so-called 
“Boar's Back” of Digby County, the total length of which, 
though somewhat interrupted, cannot well be less than twenty 
miles. The best place for its examination (where also are the 
“ moving stones” referred to in Lord Dunraven’s account of his 
travels in Nova Scotia, regarded by him as inexplicable, but the 
result, probably, of the expansion of lake ice), is on the “ Hecta- 
nooga Road” in Yarmouth County, a short distance north-west 
of where this joins the Weymouth Road, near Wentworth Lake.* 
As usual this kame consists of sand and gravel, with some 
imbedded boulders, and also, as usual, it is bordered on either 
side by extensive low and flat tracts, occupied mainly by bogs 
and barrens. In a few instances, as on the Jordan River, above 
Jordan Falls, the kames are found to bifureate, or to enclose 
deep circular or oval depressions, forming “ kettles.” 
IV. UPLIFTS AND DISLOCATIONS. 
Marine and River EHrosion.—No finer opportunity for the 
study of disturbed strata could readily be found than that 
afforded by the south coast of Nova Scotia. Almost every 
* See Church’s Map of Digby County. 
