GREENE COUNTY. 677 
one-third cents per bushel. When retailed at the kilns, it is sold for 
twenty-five cents per bushel. 
The Cedarville lime has the reputation of being “cooler” than the 
- limes with which it comes into competition; that is, it does not give out 
as much heat in slaking, and slakes with more difficulty, or at least with 
less rapidity. Whatever differences of this sort exist must be referred 
to its physical state rather than to its chemical constitution, as it agrees 
in this respect perfectly with the Yellow Springs, Springfield, and Sidney 
limes. 
At Yellow Springs the business of lime-burning is extensively carried 
on by W. Sroufe, Esq. Mr. Sroufe has not yet introduced patent draw- 
kilns, but is making preparations to doso. He gives the amount of hme 
produced at his kilns during 1874 as thirty thousand bushels. The cost 
of wood averages three dollars and twenty-five cents per cord, and one 
cord, as at Cedarville, is required for the burning of fifty bushels of lime. 
The lime is sold at fifty-five dollars per car load, as is that manufactured 
at Cedarville. 
The Yellow Springs quarries reach down to the building-stone courses 
that underlie the lime-producing stratum. Mr. Sroufe reports the sale of 
five hundred perches of building stone during 1874. The average price 
of building stone is one dollar and seventy-five cents per perch. No 
courses well adapted to cutting have yet been worked here. 
The Cedarville beds impress a peculiar appearance on the valleys in 
which sections of them are disclosed. They generally appear in a smooth, 
vertical wall, bluish-white in color, and overhanging the even courses of 
the Springfield stone. The latter are more easily eroded than the cap- 
rock, by reason of the shaly partings found between them. It therefore 
results that when a stream has once cut its way through the cap-rock the 
gorge becomes fully as wide, or even wider, at the bottom than at the top, 
as is the case at Clifton. As the work of erosion advances, large masses 
of the cliff are left unsupported, and are at last precipitated into the ravine, 
as is shown so abundantly in the valley of the Miami between Clifton 
and Grinnell’s Mill. The present state of the valley at Clifton shows 
very clearly the manner in which the whole work has been accomplished. 
We can be certain that the valley has been growing through the illim- 
itable past by the same stages that we can mark so clearly at the present 
day. : 
The springs that issue from the Niagara series are very important and 
serviceable, but attention will be called at this place to but a single point, 
in connection with them, viz., the heavy deposits of travertine which 
some of them have made and are still making. The great fountain from 
2s 
