JOHNSON: TALLULAH DISTRICT 
235 
roaring among the trees far below him, and wonders how it got there. 
The wagon road winds tediously back and forth around the sides of 
the hills before it finds its way down to the level so suddenly reached 
by the stream. Here, in an unglaciated region, we find tributaries 
which do not join their mains at accordant levels, as we should expect 
under normal conditions. 
(9) The right-angled bend made by the Chattooga- Tugaloo River .— 
This curious “elbow” is a striking feature on the map, and becomes 
even more suggestive when we note that the southwest course pursued 
by the Chattooga until it joins with the Tallulah to make the Tugaloo, 
is apparently continued by Deep Creek and the Soque River into the 
Chattahoochee. We are led to wonder if there may not be some 
rational explanation for this peculiar drainage pattern. 
Resume. 
We have a whole series of interesting topographic features grouped 
together in this area for which we seek a rational explanation. It 
is not sufficient to say that they “happen” to be so. All the tribu¬ 
taries of one drainage system, be they large or small, have open up¬ 
land valleys, while all the larger tributaries of another system close 
by and in the same upland, have deep gorges. The smaller tribu¬ 
taries of this latter system first flow through open upland valleys, 
and then all have falls at their mouths by which they reach the bot¬ 
toms of the gorges. Falls or rapids are abundant in all the streams 
of one system, but are practically unknown in the streams of the 
other system. A peculiar elbow bend occurs in the main line of one 
drainage system, which seems to bear some relation to the course of 
the main line of the other system. Associated with these features 
are two peneplain levels, separated by a marked escarpment. The 
systematic grouping of features is certainly very notable, and if we 
can find a single reasonable explanation which will bring them all 
into a systematic relationship, there will be a good reason for accept¬ 
ing such an explanation as valid. When found, however, it must 
account for certain minor lack of agreement in cases, such as the 
presence of extensive falls in the Tallulah River, and the absence of 
any such falls in its neighbor the Chattooga, where only shallow falls 
and rapids occur, although the stream is of about the same size as 
the Tallulah. 
