Icolmkill, or Iona, is a small island which St Columba chose for his habitation--It was respected for its sanctity, and college or seminary of ecclesiastics--Part of its church is still standing, with the tombs of several Scottish, Irish, and Danish sovereigns, who were here interred--These islanders are very bold and dexterous watermen, consequently the better adapted to the fishery: in their manners they are less savage and impetuous than their countrymen on the continent; and they speak the Erse or Gaelick in its greatest purity. Having sent round our horses by land, we embarked in the district of Cowal, for Greenock, which is a neat little town, on the other side of the Frith, with a curious harbour formed by three stone jetties, carried out a good way into the sea--Newport-Glasgow is such another place, about two miles higher up. Both have a face of business and plenty, and are supported entirely by the shipping of Glasgow, of which I counted sixty large vessels in these harbours--Taking boat again at Newport, we were in less than an hour landed on the other side, within two short miles of our head-quarters, where we found our women in good health and spirits. They had been two days before joined by Mr. Smollett and his lady, to whom we have such obligations as I cannot mention, even to you, without blushing. To-morrow we shall bid adieu to the Scotch Arcadia, and begin our progress to the southward, taking our way by Lanerk and Nithsdale, to the west borders of England. I have received so much advantage and satisfaction from this tour, that if my health suffers no revolution in the winter, I believe I shall be tempted to undertake another expedition to the Northern extremity of Caithness, unencumbered by those impediments which now clog the heels of, Yours, MATT. BRAMBLE CAMERON, Sept. 6. To Miss LAETITIA WILLIS, at Gloucester. MY DEAREST LETTY,