282 PHILOSOPHICAL TRANSACTIONS. [aNNO I698. 



pillars, but in a different situation, not perpendicular and erect, but lying as it 

 were on their sides, in a slanting position. 



Beyond this hill eastward, at several distances, stand many sets of straight 

 and upright columns, ranged in curious order along the sides of the hills ; that 

 parcel of them which is most conspicuous and nearest the Causeway, the 

 country people call the looms or organs, from its formal shape ; which is so 

 very regular, that all its several pillars may be distinctly counted, and they are 

 just 50 in number ; tlie largest and tallest, at least 40 feet high, consist of 44 

 distinct joints, and stand directly in the middle of all the rest, which .gradually 

 decrease in length on both sides of it, like organ pipes. 



At 4 miles westward of the Giant's Causeway, 1 mile and 4- distant from the 

 sea, 3 miles from the 'town of Coleraine, and about 2 from Dunluce, an old 

 seat of the Marquisses of Antrim, several ranges of tall pillars show themselves 

 along the side of a rock for about 300 paces together : a church within a 

 quarter of a mile of them, called, Ballywillan-church, was built for the most 

 part with stone taken from the pillars, which are all of the same sort of stone 

 with the columns of the Giant's Causeway, and like those too, consist of re- 

 gularly cut, loose, and distinct joints, placed one upon the top of the other. 

 But in the following respects they differ : 1 . That some of these inland pillars 

 are of a much larger size than any in the Causeway, being 2 -l feet in diameter : 

 2. That tliere are only found among these such as have 3, 4, 5, and 6 sides; 

 none that have 7 or 8, like some of the Giant's Causeway : 3. That the joints 

 of these do not observe that kind of articulation, by cavities and convexities, 

 as those of the Causeway do ; but their upper and lower surfaces touch only in 

 planes, and they stand united by means of their weight and pressure alone, so 

 that a small force will sever them. 



' As to the internal substance of this stone, it is of an extraordinary hard, 

 close, and compact texture : its grain so very even and fine, that it hardly ap- 

 pears, unless viewed near the eye, and when the stone is newly broke ; then it 

 shows itself on its surface like a very minute small glistening sand, thickly in- 

 terspersed with the rest of the solid ; which, as its parts are so firmly combined 

 together, has something more of gravity in proportion to its bulk, than most 

 other sorts of stone, unless such as partake of the marchasite or pyrites, and 

 are more ponderous than usual from a metalline principle being an ingredient 

 in their composition : of which this does not at all participate, or at least not 

 in any considerable quantity that I can discover. It seems as if it were one 

 plain homogeneous body, without any mixture of cochlite, belemnite, veins of 

 spar, or such like extraneous matter, so commonly met with in most other 

 stony concretes : nor can there be observed rays, furrows, striae, or any man- 



