OF THE COUNTY OF pOWN. 17 



grinding (lone, and lies in feparate blocks of many 

 tons weight ; from hence it turns to the weft, along 

 the top of Slieve-na-boly, where it takes its courfe to 

 the fouth-weft, and afterwards through the parifties of 

 Drumgoolan and Drumballyroney, to the lordfhip of 

 Newry, which it alfo traverfes, and at length joins the 

 granite hills of the county of Louth. Notwithftanding 

 granite is the predominant ftoue in the diftricT: I have 

 pointed out, it does not entirely exclude the fchift, or 

 flate, which is often feen in contact with it, and raifmg 

 its head from a furrounding mafs of the former, which 

 itfelf is again entirely inclofed, or fet in fchift. From 

 thefe mountains flow the two principal rivers of the 

 county, the Bann and the Lagan, befides Newry river, 

 and various fmaller ftreams. Quarries of this ftone 

 are opened in many places, particularly In the neigh- 

 bourhood of Newry, Rathfryland, and in different 

 parts along the face of the mountains ; from the little 

 river of Annalong there is an exportation to other 

 parts on the coaft. This county likewife abounds 

 with many other kinds of foffils, clays of different 

 finenefs, marie, limeftone gravel, &c. Upon the 

 whole, the county of Down, from the nature of its 

 rocks, and from the minerals already found, feems to 

 deferve the attention of an able mineralogift ; it has 

 already been traverfed by a very induftrious one, 

 whofe labours I dare fay will be productive of bene- 

 fit, by pointing out many ufeful fubftances, which have 

 hitherto been looked upon with neglect. 



D SECT. 



