Dr. Mac C u l l o c ii ' s Supplement, Isfc. 1 5 7 



same ground in much greater detail, I have been enabled to supply 



the deficiencies which were acknowledged in that paper, Hid to 



correct the errors into which I had unwarily fallen. I hold it my 



A line drawn from toe head of Loch Sniaert to that of Loch SUpin will, nod I 



exceptions, tepa ta of Lord afacdonald from those which !i'- to the n 



of it. It is not too much to say of the latter division (hat the outline of the COMl is in- 

 correct, and the internal features something worse than conjectural. I5.it the division 

 h in. !i i onstitntea Lord Macdonald's estate, having been taken from a sarvev of thai district 

 executed by an intelligent provincial surveyorfor his Lordship, is deserving of considerable 



e, and will be found over most parts Sufficiently accurate in its internal features 

 for the purposes of the geolo Even in the latter I have found it net 



make some additions and alterations J in the former part of the island these are consider- 

 able. I must however Bay, that even iii this case I have limited the corrections to those 

 parts of the map where it was u< Ci ssarj to denote the boundaries of different rocks; the 

 northern parts, presenting only one substance, were not in immediate need of it, and I do 

 not pretend to arrange the geogiaphy of the island. It is necessary to point out the 

 alterations which have been made. 



The region lying between Loch Eishort and the foot of the syenite hills, which include* 

 the valley of Strath, has been redrawn and reduced as far as was possible to the pn lent 

 size, the intricacy of the position in the rocks which constitute it absolutely requiring a 

 more accurate detail of the leading features of the ground. Slight alterations have been 

 mail, in the shades which indicate the relative altitudes of the hills, wherever that was 

 called for, and the result will be apparent to those who shall compare the present map 

 with Arrowsnnth's. At the point of Sleat and in the Kyle ri'ch two or three alterations 

 have been made in the line of coast, these being absolutely required; others which might 



have 1 n made have been omitted, as they were not wanted for the particular objects of 



this work. 



Tin- changes made on the eastern side arc much more important. The estate of Strathaird 

 which includes Blaven and Coruisk, has been corrected from a private BUrvej in possession 

 of the proprietor, Mr. Macalistcr. The Cuchullin hills are in the original map entirely 

 misplaced, while the remarkable lake above mentioned has been omitted. These I have 

 rectified as far as was in my power, since both their form and extent were important. The 

 tract to the north of this including Mr. Macleod's property, remains with very little 

 alteration, since its uniformity of composition did not call for any particular care. 



The directions of the strata are marked by prolonged lines extending to the neighbour- 

 |ng shores or islands wherever they presented the same substances, and on these the 

 tendency as well as the quantity of the dip is occasionally pointed out by an appropriate 

 Index and numbers, wherever it seemed necessary to specif) them. 



Finally, whatever corrections may be found in this map are merely intended to serve tlis 

 purpose of this paper; the formation of a correct map of Sky must yet be coi^idercd a 

 work far distant. 



Vol. iv. x 



