Unless we assume, (which we have no right to do,) that the extent of irreclaimable mountain, marsh, and sand, is much greater in proportion to the area of Belgium, Prussia, and Germany, the countries chiefly referred to by Mr Laing, than it is in Britain, we apprehend that their reserve is, to say the least, considerably larger than ours. We must notice also, that our author seems to regard the unreclaimed land of Britain as if it were a fund on which we can fall back at any time, when unfavourable harvests abroad shall have curtailed our accustomed supplies from the countries of the Continent. But a little consideration will show that, after we have once learnt to trust to annual foreign supplies, it is utterly vain to expect that their occasional deficiency will be supplemented, in case of emergency, from our own spare resources. Land is not like the instruments of production employed by the manufacturer. People talk of having recourse to our less fertile soils, as if it were a matter as easily and speedily accomplished as setting a mill in motion by raising the sluice. But the ponderous machine of agriculture is not so easily set a-going. On unreclaimed soils, an expenditure of from £12 to £25 an acre is required at the very outset. Fences and houses have to be erected, roads and drains to be formed, roots to be grubbed up, stones to be removed, before even the seed can be placed in the ground. Taking the farmer's capital into account, we are probably within the mark when we assert that £26 an acre, on the average, must be laid out on new land, before a single bushel can be reaped from it; and, even when ready for a rotation, an additional preparation of two or three years is necessary to bring it into a state for bearing wheat. Now, is there any speculator so insane as to risk such an expenditure on the possible chance of an occasional and simultaneous failure of the crops on the Continent? Even if grain were at a famine price, will any one be found to throw away his money in ploughing up "lawns, woods, shrubberies, village greens, and waste corners," when the very next season may see our ports swarming as usual with foreign grain ships, and "buyers firm" at 35s. a quarter?