410 
wells had its course entering Allistons Branch hear its head-waters. The 
present Allistons Branch, then, is the lower part of the main stream that in 
former times principally drained the area now occupied by Flatwoods. 
The map shewing the main drainage, the main channel and its tributaries, 
are inferences that can scarcely be avoided. There are indications, how- 
ever, that portions were drained by underground channels to other streams ; 
as, for instance, the extreme southeast corner, the eastern part of section 
30 and the portions already mentioned near the northwest corner of the 
region. The sinks of these portions are evidences that their drainage was 
as it is now, and was only temporarily interfered with by the forces that 
destroyed the old drainage. Very probably other portions of considerable 
area were drained into the main channel from underground passages, the 
water coming to the surface farther down in the form of springs. 
Next, the relation of Flatwoods proper with the adjunct south of 
Stogsdill Pond will be considered. The lack of any deep well immediately 
west of Stogsdill Pond leaves the data somewhat incomplete, but this 
portion has an elevation of 820 feet, and it seems likely that bed-rock is 
much higher here than either to the north or to the south. Bed-rock out- 
crops at 760 feet one-half mile west of this portion, and it is found at 800 
feet in Mr. Myer’s well one-half mile southeast. Thus it is very probable 
that there was a divide between Flatwoods proper and the small adjunct 
to the south. It must have been very low near Stogsdill Pond, for wells 
Nos. 16 and 17 penetrate sand their entire depth, and No. 17 was said to be 
eighty feet deep, but, as said before, the writer doubts the reputed depth of 
this well. 
The region east of the Myer’s well seems to have been considerably 
filled, as indicated by well No. 20, and the sharp ravines which are etching 
their way in the flat area near by. Examinations of these ravines show 
that they contain no bed-rock, but were rather grooved into the stratified 
sand and fine gravel of which the flat area is composed. 
In the extreme southwest corner of section 1 is also a filled area, but 
farther east bed-rock is found, and on top of the ridge there is no sign. of 
silt or sandy material. Undoubtedly the head of a stream reached into this 
corner, near where the present stream is endeavoring to clean out the 
filled-in material. Thus the evidence shows that a divide with a very 
irregular summit once separated the adjunct basin from Flatwoods proper. 
Turning to the western edge of the adjunct basin, we find sharp 
V-shaped valleys or ravines of McBrides Creek etching their way into the 
