KNOX COUNTY. 329 



FBET. 



1. Soil, black loam 6 to 10 



2. Blue clay 12 to 14 



3. Quicksand and washed griivel. 



A well at Centerburg passed through — 



FEET. 



1. Yellow clay 12 



2. Blue clay.... .' 39 



wheD water was obtained. The material below was not penetrated; no 

 wells here are sunk to the rock. 



The timber in this region is beach, maple, oak, white and black ash, 

 and black walnut. Of the latter a very large amount of valuable timber 

 has been cut for shipment east. 



The small streams in Hilliar township form the head waters of Lick- 

 ing River. They are bordered with gently rolling hills of modified 

 Drift, containing angular fragments of the Waverly and rounded granitic 

 bowlders, and rising forty feet above the bed of the stream. The soil is 

 a' mixture of clay and sand, rich in the debris of the lime rocks. 



The wells at Lock, on the south line of Milford, pass through eight to 

 fifteen feet of yellow clay, and fifteen to twenty feet of blue clay, then 

 on the higher lands striking gravel, on the lower, quicksand. The sur- 

 face is of the same general character through Milford and Miller town- 

 ships, viz., undulating hills from which thp finer material of the Drift 

 has been washed, bordering flood plains tnrough which the small streams 

 flow, generally over beds of water-rolled pebbles, this material resting 

 upon unmodified drift. A section of the bank exposed by a bend in 

 Licking Creek shows this arrangement of the materials : 



FEET. 



1. Yellow clay and coarse unatratifled gravel 4 



2. Water-washed §aiid and gravel, rudely stratified 8 



3. Yellow boulder clay 1 to2 



4. Blue boulder clay to bottom 15 



The whole mass is filled with rock debris, that of the two upper mem- 

 bers nearly all rounded and water-worn. Granitic and limestone frag- 

 ments occur in all. 



Eastward from Lock, Drift apparently fills the old valley of erosion to 

 the foot of the hills east of the Baltimore and Ohio Railroad. These 

 hills rise somewhat abruptly to the height of three hundred feet above 

 the valley. Their slopes are covered with Drift, so that ;no rock ex- 

 posures are found until the dqgcent into the valley of Owl Creek is 

 reached, about one mile from Mt. Vernon. The rock is here broken and 

 crushed as if by lateral thrust. An old water-plain borders the west 



