306 SKY. GEOLOGY. RED SANDSTONE. 



trace all the changes that occur ; but the observations 

 made in the interior include the most essential circum- 

 stances, and are fully justified by corresponding remarks 

 made 011 the south-western shore of Sleat where the 

 rocks are fully open to investigation. 



The low valley that stretches northward from Loch 

 in Daal does not interrupt the continuity of the strata, 

 though it intersects the whole series. Between this 

 valley and the line of coast just described the beds 

 in the interior are, as far as can be discovered, con- 

 sistent throughout, but in the opposite direction some 

 considerable irregularities take place, which must next 

 be examined by assuming a fresh portion that may be 

 included between this spot and a transverse line crossing 

 to the north-eastward of Ord. Fortunately the two shores 

 of Loch Eishort are included in this division, and we are 

 thus materially assisted in verifying observations less satis- 

 factorily made among the boggy wastes of this obscure 

 and difficult country. 



Tracing from Loch in Daal to the west, the lines 

 of bearing of the schistose beds, and of the varieties 

 of quartz rock that accompany them, are found con- 

 tinued to the head of Loch Eishort with the usual 

 easterly dip. But here that dip becomes suddenly re- 

 versed, while some beds are found in a vertical position ; 

 these, although they cannot be consistently traced, being 

 probably situated between those of westerly and those 

 of easterly inclination. Here also the ordinary red sand- 

 stone makes its appearance, first alternating both with 

 the schist and the blue rock, but shortly becoming pre- 

 dominant, and at length excluding the other substances, 

 while it preserves a western dip. Thus it continues along 

 the north-west shore of that loch into the interior, until 

 its termination in the syenite, which near the upper part 

 of the loch covers the place where the junction of the 

 sandstone and the limestone should be found. On the 

 south-eastern shore there is much of the usual confusion 



