That is, the farmers quoted by _Blackwood_ have on an average of good and bad years, on average land, been growing nearly 4½ bushels wheat more per acre, than the farmers, on the most fertile soils in the country, quoted in the Parliamentary Report of 1814. It is quite true that Messrs Brodie and Turnbull grow more oats and barley per acre than Messrs Watson and Dudgeon, on their average of years; and, you might have added, more than Mr M'Culloch did with his boasted high farming in the abundant crop of 1849. You say that the figures of Messrs Brodie and Turnbull give "their average produce for a series of years, and elaborate extracts from their books are adduced to corroborate them," (p. 14.) Now, in giving his evidence, Mr Brodie pointedly states that he had taken his farm "two years ago;" and therefore it could not be "for a series of years" that he gave the average produce of his farms. Mr Brodie _produced no extracts from his books_, and altogether you misstate his case. Mr Turnbull's evidence is more copious. To the question--"What is your course of cropping?" his answer is--"My heavy land in a rotation of six--remainder, of about 80 acres, is in a rotation of four; 334 acres are under the plough; the remainder (20 acres) always in grass." And he describes his six-shift course, which applies to 250 acres of the whole arable land, to be--"Fallow, wheat, grass, oats, beans, and wheat." Mr Turnbull did grow more corn crops than Messrs Watson and Dudgeon; but you forget to tell your reader that, during your "cycle of thirty years," he had three-fourths of his farm, for five several years, in fallow, absolutely barren, and not producing a mouthful of bread or anything else, for the people. If the loss incurred during these five years of bare fallow is considered, and if regard is had not only to cereal produce, but to the cattle grown and fed on their pasturage, it may be safely concluded that Messrs Watson and Dudgeon are at least as large benefactors, in supplying food to the people from inferior soils, as Messrs Brodie and Turnbull were, on the very best lands in Scotland. You seem to fancy, because Mr Brodie valued his clover at £6, 6s. per acre, and his turnips at from £8 to £10 per acre, that, in the department of stock, he greatly excelled Messrs Watson and Dudgeon. You forget, again, to tell your reader that it was the _Scotch acre_ that Mr Brodie spoke of: was this accident or ignorance? If this error is corrected, and if the exorbitant prices of butcher-meat at the period referred to are remembered, the value of the green crop, as assumed by Mr Brodie, will surprise no one.