402 



regions passes under this black soil. But farther out into the black soi . 

 the silt underneath almost pinches out. The low region containing the 

 black soil was undoubtedly the centre of the basin in former times, even 

 as it is now. This low-lying, fertile region is very near the 720-foot con- 

 tour line ; thus it is some forty feet below the silt line at the foot of the 

 hills surrounding. 



It was said that the slope of the basin is generally toward the mathe- 

 matical center; this is not true specifically, as there are some excep- 

 tions. Several places considerably elevated occur. The large one in 

 Section 31, T. 10 N., R. 2 W. reaches to the height of 795 feet, approxi- 

 mating the peripheral regions. A well shows that bed rock is near the 

 surface of this old monadnock. In section 36, west of the above, a long 

 arm-like island projects out into the basin, and near the south of the 

 middle of the section a notch occurs in the arm, which almost separates the 

 north end, leaving a round-like knob projecting some forty feet above the 

 basin. This elevation also has bed-rock in it near the surface. Section 

 25, T. 10 N., R. 3 W. has two elevations some twenty feet above the gen 

 eral level of the basin. It was not determined whether these had bed-rock 

 near the surface, but indications are, especially in the western one, that 

 it is there at a shallow depth. The elevation on the section line between 

 sections 26 and 35, T. 10 N., R. 3 W. is a rounded knoll about twenty-five 

 feet above the general level of the basin. Indications are that it con- 

 tains no bed-rock. The northern part of Section 6, T. 10 N., R. 2 W., con- 

 tains a slight elevation, perhaps twelve feet above the low-lying area 

 adjacent. A deep well proves that it contains no bed-rock. Southeast 

 in section 5, and entering section S, is a long elevation parallel to the long 

 axis of the basin and about twenty feet high. A well proves that this one 

 also contains no bed-rock. 



While dealing with the irregularities of the surface of the basin, at- 

 tention must be called to the depression at the southwestern edge of Flat- 

 woods, on the section line between sections 2 and 3, T. 9 N., R. 3 W. This 

 depression, containing about two acres, is the site of a small lake which is 

 being rapdly filled by in-wash and vegetation. The elevation of the sur- 

 face of this small lake, bearing the name of Stogsdill Pond, is about 770 

 feet. It is enclosed on three sides by sloping banks which reach thirty 

 feet above the water. It is open on the north. 



The south bank of Stogsdill Pond is the lowest opening to a sort of 

 an adjunct to the Flatwoods basin. The surface of this adjunct slopes 



