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 th« 

 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 do so. He gives the amount of lime 

 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 burniflg 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 



