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 with poverty. The characteristic of poverty seems to be, to live from hand to mouth: the characteristic of riches is, to have a store to apply to for the commodities wanted for immediate consumption; but in every case of productive labour as explained by Adam Smith, there is always a period, though in some cases it may be very short, when either the stock destined to replace a capital, or the stock reserved for immediate consumption is distinctly augmented by it; and to this quality of adding to the national stock, the term enriching, or productive of riches seems to be peculiarly appropriate. But it is not enough that it should be susceptible of accumulation, and of adding to the national stock, to entitle it to be called productive according to the meaning of Adam Smith. In order to make the term useful for practical purposes, the results of the kind of labour to which it refers should be susceptible of some sort of definite valuation. The laws of the legislator, the precepts of the moralist, and the conclusions of the natural philosopher may certainly be said to be susceptible of accumulation and of receiving assistance from past labour; but how is it possible to estimate them, or to say to what amount the country has been enriched by them? On the other hand, the labour, which is the necessary condition of the supply of material objects is estimated in the price at which they are sold, and may fairly be presumed to add to the wealth of the country an amount at least equal to the value paid for such labour; and probably with few or no exceptions, the labour which is realized upon material products is the only kind that is at once susceptible of accumulation and definite valuation. It has been observed by M. Garnier, in his valuable edition of the Wealth of Nations, that it seems very strange and inconsistent to denominate musical instruments riches, and the labour which produces them productive, while the music which they yield, and which is the sole object for which they are made, is not to be considered in the same light; and the performers who can alone put them to their proper use,