732 GEOLOGY OF OHIO. 
At the mouth of Brush Creek is an isolated hill of rock, separated from 
the adjacent highlands on one side by what is evidently an old channel 
of Brush Creek or Big Yellow Creek, a channel long since deserted by 
the stream which formed it. 
The sandstone above Coal No. 6, on Big Yellow Creek, contains many 
quartz pebbles as large as peas, as it does in Columbiana on the east and 
Tuscarawas on the west. None of the sandstones below Coal No. 6 show 
this peculiarity. 
The limestones of this section are all inclined to be nodular, and those 
under coals Nos. 5, 6, and 7, and the black fossiliferous limestone, thirty 
feet above No. 7, on Tidball Run, below Salineville, often contain minute 
coiled shells—Spirorbis carbonarius. This is supposed to be the calcareous 
tube of an annelid somewhat like Serpula; it is frequently found adher- 
ent to the leaves of plants which had fallen into the water. It also covers 
in countless numbers some of the surfaces of the cannel coal beneath the | 
“Big Vein” at Linton. 
At several places on Yellow Creek a micaceous sandstone, some twenty 
feet below the “Roger Vein” (Coal No. 5), is saturated with lime, form- 
ing a “bastard limestone ’’—a peculiarly tough rock. It contains some 
iron, and the exposed surfaces are frequently brown, while the rock — 
within is still blue or gray. Along its outcrop it weathers into rounded 
angles, showing its solubility. 
Many reports are current of the discovery of galena on Big Yellow 
Creek, and much mystery is thrown around the subject, as if it were 
a matter of great importance. This is, however, not peculiar to that 
locality, as nearly every county in the State has its lead man, who claims 
to have found important deposits of this metal, and manufactures a cer- 
tain degree of cheap notoriety by pretending to be the possessor of an 
important secret, which he carefully guards. With sincere regret for 
the necessity of robbing such persons of the capital which they employ 
with so much pleasure, if not profit, 1am compelled to say that all these 
rumors of the discovery of valuable lead veins, or the allied legend of 
the manufacture of bullets by the Indians from lead obtained in certain 
secluded places are, for Ohio, either deliberate frauds or creations of the 
imagination ; for not only has no valuable deposit of lead yet been found 
in the State, but enough has been learned of its geological structure to 
warrant the statement that no such thing exists here. 
In the country about Big Yellow Creek there are many of the works 
of the Mound Builders. A son of Mr. James Dorrance reports having 
opened several mounds on the upland, and from these he has obtained 
a large number of wrought flints and other stone implements. A little 
