4 



By the application of lime these grounds have been regene- 

 rated, the population resuscitated, the smoke is seen gently- 

 curling from the cottage in the wood, the ploughboy's whistle, 

 and the lowing herds that fill the land with health and pros- 

 perity, have risen as from the dead. This is a living example 

 of what science might do, and speaks loud to those who are 

 tardy in perceiving the advantages that would result from the 

 scientific investigation of the manifold hidden resources of the 

 state which now lie slumbering in their wealth. 



Near Dillstown, in Monahan township, on the land of Col. 

 Eichelberger, there exists a bed of marl, which might also be 

 happily employed in ameliorating the composition of some un- 

 healthy soils : it might be added alone, or mixed and used in 

 compost. 



The rocks that show themselves in York county are decidedly 

 Transition. We observed no appearance of organic remains, 

 in place: specimens of encrinites were shown us from the bed 

 of the Susquehanna, but they were specimens that had been 

 carried down by the river, and cannot be considered as charac- 

 terizing any rocks that we saw in situ. At some former period 

 this district was the scene of violent eruption and dislocation. 

 The direction of the strata of these schistose rocks is from a 

 few degrees northof north-east to as many south of south-west, 

 lying vertical at different, though generally at highly inclin- 

 ed angles. 



If we turn our backs upon the South Mountain, leaving Dills- 

 town, which stands near its base in Monahan township, pro- 

 ceeding on through Warrington, Dover, West Manchester, on 

 to York, we will cross in succession the following rocks, lime- 

 stone, syenite, eurite, greywacke, greywacke slate, or argilla- 

 schist, breccia, coal, and limestone upon which the city of York 

 stands. 



LIMESTONE. 



This rock is frequently termed, and in truth is most known, 

 as the blue limestone, from a frequent characteristic blue colour. 

 It however is sometimes yellow and white, and almost black ; 

 in this case I have found it to be coloured with carbonaceous 



