536 Native Jasper. By Mr James Thomson. 



High Haddock Stones 

 Sh.eriflE's Stone 

 Beggar's Rest 

 Eookhope Edge Stone 

 The King's Stone* 



Big Nichol* 



54 



49 



24 



54 



49 



21 



54 



49 



13 



54 



48 



5 



55 



38 



22 



55 



40 



12 



1 



2 13 



2 9 



2 9 23 



2 10 5 



2 11 2 



2 8 40 



Between Tiptoe MiU and 

 Tiptoe Throat, on the 

 right hank of the TiU. 



* These two stones should have heen entered fourth and fifth in the early 

 part of the list, the order followed being that in which the six-inch 

 ordnance maps of the county are numbered. 



County Boundary 

 County Boundary. 

 County Boundary. 

 Close to trigonometrical 



Native Jasper. By Mr James Thomson, Shawdon Gardens. 



The Jaspers found in Eamsliope Burn, near the head of the 

 Eeed water, are not composed of true volcanic rock, but a con- 

 glomerate, made up of water-rounded pebbles of lava mixed with 

 other pebbles of Silurian Gray wacke. The lava pebbles are com- 

 posed of porphyritic rock, much the same as those of Coquetdale, 

 and like them containing many cavities filled with jasper. Some- 

 times these Jaspers form the whole or nearly whole of a pebble 

 and as they resist disintegration very much better than porphy- 

 ritic, they are found in streams wasbed down by floods, sometimes 

 beautifully polished by the action of the water. The specimens 

 now shown to the members of this society were found in Eams- 

 hope Burn. Tbis burn falls into the Eeed through a deep gorge; 

 the jasper pebbles roll from the face of the crumbling rocks into 

 the stream below, and are by this means carried into the Eeed- 

 water. There is no doubt that the pebbles found in this place are 

 capable of being worked into very pretty ornaments for the 

 pdrson, and for writing and toilet tables. Of course the value of 

 these stones consists in their being found amongst our native 

 hills. 



I am much indebted to Mr T. C. Clough of the Geological Sur- 

 vey Office, whose acquaintance I made this summer in the Eeed- 

 water district, for the information he gave me regarding the 

 formation of Jasper. As much of it is already known to mem- 

 bers of your society, I need not repeat it again, but draw their 

 attention to the beauty of the stone when it passes through the 

 hands of the lapidary. 



