80 OBSERVATIONS 
which I had drawn from the fingular fpecimen of the Portfoy 
granite *, . 
Ir was inthe year 1785, that-we were thus gratified by a fight 
of the jundtion of the granite with the Alpine fchifte, or primary 
ftrata, as they may be called, of the north country. We now 
were eager to fee the junction of the granite country, which I 
knew to be at the head of Loch Dune, with the fchiftus ftrata 
of the fouth of Scotland. In the year 1786, therefore, Mr 
CrerK and I fet out by the fhire of Ayr, to fearch round the 
coaft of Galloway, in order to find the junction of the granite 
mountains with the fchiftus or vertical ftrata, of which I knew 
that Galloway confifted. 
WE were extremely fortunate in finding what we looked for, 
in two different places in Galloway ; firft, in the mountain of 
Cairn’s muir, between two and three miles from the Ferry-town of 
Cree ; and, fecondly, in a little bay upon the fea-fide, about 
mid-way between Covend and Saturnefs point on the Solway 
frith. Here we were as much fatisfied, as we had been the year 
before, that the granite had invaded the fchiftus or Alpine 
ftrata, having not only broken and floated the fchiftus in every 
way poflible, but in the laft of thofe two places, we found the 
granite introduced, for fome length, in fmall veins between the 
ftratified bodies, giving every mark of the moft fluid injection 
among the broken and diftorted ftrata. 
In Auguft 1787, I fet out for Arran. Mr Crerx could not 
go at that time, and Mr Joun Crerk, junior, was fo kind as 
to accompany me. We had exceeding good weather for ex- 
ploring the lofty mountains of that ifland, and returned ex- — 
tremely fatisfied with our expedition. 
I PROPOSE to give a particular account of the conftruction 
of Arran, or a mineralogical hiftory of it; therefore it will here 
only be neceflary to fay, that I found my former conclufions 
fully confirmed by all the appearances in this moft interefting 
ifland ; and I brought fpecimens with me, fome of them of great 
fize, 
* Tranf. R. S. Edin. vol. I. p. 255. Phyf. Cl. 
