101 JOURNAL OF THE 
and other seuth Atlantic states is that to be found in the 
great belts of slates and crystalline schists lying in the 
eastern part of the Piedmont plateau region. (See 
map). Here, as in structural type shown in fig. 3 
below, layers or sheets of rocks are nearly vertical, and 
are composed of material varying in hardness and dura- 
bility ; but throughout much of this belt, and especially 
along its western border, the variations are less well de- 
fined and ona smaller scale, the thin, hard layers being 
so numerous and so generally distributed that in the 
streams like the Haw and Deep rivers, which cross the 
larger portions of these belts nearly at a right angle, 
there is almost a continuous series of small rapids or 
shoals with an aggregate fall of from 5 to 20 feet to the 
mile. 
The possibility of waterpower development on the 
Haw, Deep and Yadkin, as they cross the central and 
most extensive of these slate belts in Alamance, Ran- 
dolph, Davidson, Stanly and Montgomery counties, is 
greater than on any other portion of these rivers. 
ON THE HAW AND DEEP RIVERS. 
Both the Haw and Deep rivers rise in the granitic and 
eneissic area, the former to the northwest and the latter 
to the southwest of Greensboro, and are sufficiently 
large in volume to be available for small powers by the 
time they reach the western border of the slate belt. 
Throughout their course of about 50 miles across it each 
river is a succession of shoals or rapids, many of which 
have already been developed, while a number of others 
are capable of being developed on a considerable scale. 
The slates and schists of this region have a general 
northeasterly course, and, as a rule, dip steeply toward 
the northwest, so that these streams with a southeaster- 
ly course have cut their beds directly across the upturned 
