In the excellent work of M. de Sismondi, De la richesse commerciale, he says in a note on the subject of rent, 'Cette partie de la rente fonciere est celle que les Economistes ont decoree du nom du produit net comme etant le seul fruit du travail qui aj outat quelquechose a la richesse nationale. On pourrait au contraire soutenir contre eux, que c'est la seule partie du produit du travail, dont la valeur soit purement nominale, et n'ait rien de reelle: c'est en effet le resultat de l'augmentation de prix qu'obtient un vendeur en vertu de son privilege, sans que la chose vendue en vaille reellement d'avantage.' [3] The prevailing opinions among the more modern writers in our own country, have appeared to me to incline towards a similar view of the subject; and, not to multiply citations, I shall only add, that in a very respectable edition of the Wealth of nations, lately published by Mr Buchanan, of Edinburgh, the idea of monopoly is pushed still further. And while former writers, though they considered rent as governed by the laws of monopoly, were still of opinion that this monopoly in the case of land was necessary and useful, Mr Buchanan sometimes speaks of it even as prejudicial, and as depriving the consumer of what it gives to the landlord. In treating of productive and unproductive labour in the last volume, he observes, [4] that, 'The net surplus by which the Economists estimate the utility of agriculture, plainly arises from the high price of its produce, which, however advantageous to the landlord who receives it, is surely no advantage to the consumer who pays it. Were the produce of agriculture to be sold for a lower price, the same net surplus would not remain, after defraying the expenses of cultivation; but agriculture would be still equally productive to the general stock; and the only difference would be, that as the landlord was formerly enriched by the high price, at the expense of the community, the community would now profit by the low price at the expense of the landlord. The high price in which the rent or net surplus originates, while it enriches the landlord who has the produce of agriculture to sell, diminishes in the same proportion the wealth of those who are its purchasers; and on this account it is quite inaccurate to consider the landlord's rent as a clear addition to the national wealth.' In other parts of his work he uses the same, or even stronger language, and in a note on the subject of taxes, he speaks of the high price of the produce of land as advantageous to those who receive it, it but proportionably injurious to those who pay it. 'In this view,' he adds, 'it can form no general addition to the stock of the community, as the net surplus in question is nothing more than a revenue transferred from one class to another, and from the mere circumstance of its thus changing hands, it is clear that no fund can arise out of which to pay taxes. The revenue which