12 
BULLETIN OF THE LABORATORIES 
interesting Producti have been found imbedded in these concretions. 
Northeast of Granville is a very rough section of the county and here 
the conglomerate is more highly developed than elsewhere, and is often 
highly fossiliferous, Chonetes illinoisensis, Spirifer carter!, and two 
other species, as well as large specimens of Hemipronites being the 
characteristic fossils. The highest hills in this vicinity are perhaps 150 
feet above the altitude of the conglomerate, at the “dug way,” and may- 
be near the line of juncture with the coal-measure sandstone or, in- 
deed, may contain a few feet of that rock, though only surface frag- 
ments of such a rock have been seen. The thickness of the conglom- 
erate or coarse Waverly sandstone is estimated at twenty feet and grad- 
uates insensibly into the olive free-stone, as well shown a half mile 
northeast of the “ dug way,” 'half way from Granville to Newark. 
The free- stone extends in these hills to some 120 feet above their bases, 
(or perhaps 60-80 feet above the" 18-inch layer of conglomerate, this 
being a mere estimate). The dip is here very slight, probably south- 
east. 
Hebron Hill, south of Granville, is 106 feet above the B. & O. 
track, south of it. South of Newark, along the right bank of South 
Fork of Licking, are many exposures of the Waverly rock. The 
abutment of the bridge crossing this stream, west of Mechanicsburg, 
is 170 feet lower than the top of Hebron Hill and about 60 feet below 
the B. & O. track, as indicated. The hills east of the bridge rise, 180 
feet and do not reach the coal-measure sandstone. The village of 
Mechanicsburg is 150 feet above the abutments, but a few rods east, 
at the Licking township line, are hills over 200 feet high, with thirty 
to forty feet of the characteristic white sandstone and conglomerate. 
It is here massive and might be quarried with ease. A few rods north- 
east is a high hill, 300 feet above the bridge, where there seemed to 
be about 115 feet of coal-measure rock, part of which is a ferrugine- 
ous shale, and extends far above the horizon of the Bald Hill coal. 
Indeed, some indications of its presence could be detected. The sum- 
mit of this hill is some 60 feet higher than the horizon of Bald Hill 
coal and another hill east of Bald Hill rises to a considerably greater 
height, though not to the horizon of the Flint Ridge shale, as does 
Bald Hill, 100 feet above the coal. The reservoir lies in a depressed 
region in Union and Licking townships, but is bounded on the east by 
low hills. A trip through this region revealed the presence of Waverly 
shales and freestone, with characteristic fossils. A mile eastward, 45 
