16. TOBOYNE TOWNSHIP F*. 361 



Little Illinois valley and meets Sherman's creek at Mount 

 Pleasant. Houston s run rises in the valley between North 

 and South Bower, through the former of which it has cut a 

 gap and iiows along a valley (which seems to have no name) 

 past the Monterey tannery to Beavertown, meeting Sher- 

 man's creek about two miles below Blain. 



Laurel run rises in the long narrow valley between Bower 

 and Kittatinny mountains, and flows with a very straight 

 course till it meets the larger stream about a mile west of 

 Landisburg. 



The drainage of the Horse valley is described below. 



The structure and position of the mountains of Toboyne 

 township will be found under the head of the Medina sand- 

 stone, of which their axes consist. But beside the mount- 

 ains there are lower ridges formed by the outcrop of other 

 rocks which demand notice. Details of these will be found 

 under the head of the Iron sandstone and the Ore sandrock. 

 But their relations to the mountain ridges may be mentioned 

 here. 



A low range south of New Germantown rises gradually 

 under the name of the Buck hills near Blain, and continues 

 growing slowly but irregularly higher and higher until it 

 becomes, by the outcropping of the Medina sandstone, the 

 Rising mountain. In the same manner the Chestnut hills 

 rising near Centre continue ascending until they merge in 

 Amberson ridge. 



A very unevenly crested hill called Boy cV s ridge skirts the 

 north side of Bower's mountain, and is composed of the 

 outcrop of the hard Iron sandstone and Ore sandrock. 



The Cambro- Silurian rocks, {Trenton limestone, Utica 

 shale and Hudson river shale.) 



Toboyne shares with Jackson township the distinction of 

 containing the oldest rocks in Perry county. They are 

 found in the Horse valley. Elsewhere the Medina and 

 Oneida sandstones forming ail the great mountain ranges of 

 the county are the oldest rocks exposed at the surface, but 

 in the Horse valley, owing to the enormous erosion and re- 

 moval of material, rocks of still older date come up to day- 



