kepurt of Mcdimjsfor 181)0. By Dr J. Hardy. 69 



actions, Teesdalia nudicaulis is represented as growing at the head 

 of Slitrig about Eobert's Linn, and what especially shows its 

 proximity to the "realms of frost and snow" is that Cochharia 

 officinalis has been gathered near the burn above the cataract, 

 and that Epilobium ahinifoUum fullows the little rills which 

 furrow the peat on the hills at Slitiig Head. 



Above the two bluffs on either side of the fall the water comes 

 down deliberately across ledge-like steps ; and there is a final 

 upper leap only a single step high. We saw its evei-y day 

 performance, for it recj[uired a spate to make it lively. Boggy 

 grassy ground lay beyond towards Windburgh Fell. The 

 general effect is dreary. One can readily imagine how wildly 

 the winter storms will sweep across these shelterless bogs and 

 moors. There are old folds near the cliff edge above the crum- 

 bling crags, most necessary resources from the bitter blasts. 



The party who walked to the Limekiln Edge saw only a rolling 

 waste beyond. " The Nine-Stane Eig " was within reasonable 

 compass, but the summons to depart was urgent. 



Before leaving, some Geological and Botanical notices deinaud 

 consideration, to wind up the out-door work. 

 Geological. 



A very good account of the Geology of Eobert's Liuu occurs in 

 the late Prof. Nicol's " Geology of Eoxburghshire," iu the 

 " Transactions of the Highland and Agricultural Society of Scot- 

 land," July 1845, which is less known than it deserves. As we 

 had not the opportunity of examining the ground, it may be 

 usefully placed here. 



"At Stobs' limery, the rock (limestone) which rests on hardened sand- 

 stone, is of a light yellowish grey or greenish colour, intermixed with 

 grains or veins of pure crystallised calc-spar. It is in part about 14 feet 

 thick, but thins out, and becomes broken and disturbed towards the east, 

 Avhere trap rocks appear. It also contains irregular cavities lined with 

 line crystals of calcareous spar, often coloured red. We obsersed no 

 fossils in this rock or those immediately associated with it. In a small 

 rivulet to the east of this is a curious example of the changes produced on 

 the strata by igneous rocks. The stream, one of the sources of the Slitrig 

 forms a considerable fall, known as Eobert's Linn, in the ravine below 

 which the rocks are well displayed. The highest seen is a thick bed of 

 dark coloured greenstone which rests on a bed known as the Jasper Eock, 

 and this on thick masses of incoherent sandstone, mostly red, with patches 

 of yellow. The geological Jasper Eock consists of veins of red agate or 

 chalcedony, mixed with greenish clay, lime, and quartz sands, and we have 

 no doubt is one of the marly limestones common in this formation, altered 

 by the trap. The siliceous portion bears a strong resemblance to that 



