Of the proportion, which the product of any region bears to the people, an estimate is commonly made according to the pecuniary price of the necessaries of life; a principle of judgment which is never certain, because it supposes what is far from truth, that the value of money is always the same, and so measures an unknown quantity by an uncertain standard.  It is competent enough when the markets of the same country, at different times, and those times not too distant, are to be compared; but of very little use for the purpose of making one nation acquainted with the state of another.  Provisions, though plentiful, are sold in places of great pecuniary opulence for nominal prices, to which, however scarce, where gold and silver are yet scarcer, they can never be raised.

In the Western Islands there is so little internal commerce, that hardly any thing has a known or settled rate.  The price of things brought in, or carried out, is to be considered as that of a foreign market; and even this there is some difficulty in discovering, because their denominations of quantity are different from ours; and when there is ignorance on both sides, no appeal can be made to a common measure.

This, however, is not the only impediment.  The Scots, with a vigilance of jealousy which never goes to sleep, always suspect that an Englishman despises them for their poverty, and to convince him that they are not less rich than their neighbours, are sure to tell him a price higher than the true.  When Lesley, two hundred years ago, related so punctiliously, that a hundred hen eggs, new laid, were sold in the Islands for a peny, he supposed that no inference could possibly follow, but that eggs were in great abundance.  Posterity has since grown wiser; and having learned, that nominal and real value may differ, they now tell no such stories, lest the foreigner should happen to collect, not that eggs are many, but that pence are few.

Money and wealth have by the use of commercial language been so long confounded, that they are commonly supposed to be the same; and this prejudice has spread so widely in Scotland, that I know not whether I found man or woman, whom I interrogated concerning payments of money, that could surmount the illiberal desire of deceiving me, by representing every thing as dearer than it is.

From Lochbuy we rode a very few miles to the side of Mull, which faces Scotland, where, having taken leave of our kind protector, Sir Allan, we embarked in a boat, in which the seat provided for our accommodation was a heap of rough brushwood; and on the twenty-second of October reposed at a tolerable inn on the main land.