Зображення сторінки

tional return, than that obtained from the best soils and situations. And in proportion as the further increase of population required a still greater addition to the supply, the general law would resume its course, and the further augmentation would be obtained at a more than proportionate expense of labour and capital.

§ 3. That the produce of land increases, cæteris paribus, in a diminishing ratio to the increase in the labour employed, is, as we have said, (allowing for occasional and temporary exceptions,) the universal law of agricultural industry. This principle, however, has been denied, and experience confidently appealed to, in proof that the returns from land are not less, but greater, in an advanced, than in an early, stage of cultivation—when much capital, than when little, is applied to agriculture. So much so, indeed, that it is affirmed) the worst land now in cultivation produces as much food per acre, and even as much to a given amount of labour, as our ancestors contrived to extract from the richest soils in England.

It is very possible that this may be true; and even if not true to the letter, to a great extent it certainly is so. Unquestionably a much smaller proportion of the population is now occupied in producing food for the whole, than in the early times of our history. This, however, does not prove that the law of which we have been speaking does not exist, but only that there is some antagonizing principle at work, capable for a time of making head against the law. Such an agency there is, in habitual antagonism to the law of diminishing return from land ; and to the consideration of this we shall now proceed. It is no other than the progress of civilization. I use this general and somewhat vague expression, because the things to be included are so various, that hardly any term of a more restricted signification would comprehend them all.

Of these, the most obvious is the progress of agricultural knowledge, skill, and invention. Improved processes of

agriculture are of two kinds : some enable the land to yield a greater absolute produce, without an equivalent increase of labour; others have not the power of increasing the produce, but have that of diminishing the labour and expense by which it is obtained. Among the first are to be reckoned the disuse of fallows, by means of the rotation of crops ; and the introduction of new articles of cultivation capable of entering advantageously into the rotation. The change made in British agriculture towards the close of the last century, by the introduction of turnip husbandry, is spoken of as amounting to a revolution. These improvements operate not only by enabling the land to produce a crop every year, instead of remaining idle one year in every two or three to renovate its powers, but also by direct increase of its productiveness ; since the great addition made to the number of cattle by the increase of their food, affords more abundant manure to fertilize the corn lands. Next in order comes the introduction of new articles of food, containing a greater annount of sustenance, like the potato, or more productive species or varieties of the same plant, such as the Swedish turnip. In the same class of improvements must be placed a better knowledge of the properties of manures, and of the most effectual modes of applying them; the introduction of new and more powerful fertilizing agents, such as guano, and the conversion to the same purpose, of substances previously wasted; inventions like subsoil-ploughing or tile-draining, by which the produce of some kinds of lands is so greatly inultiplied ; improvements in the breed or feeding of labouring cattle ; augmented stock of the animals which consume and convert into human food what vrould otherwise be wasted ; and the like. The other sort of improvements, those which diminish labour, but without increasing the capacity of the land to produce, are such as the improved construction of tools; the introduction of new instruments which spare manual labour, as the winnowing and threshing machines ; a more skilful and economical application of muscular exertion, such as the introduction, 50 slowly accomplished in England, of Scotch ploughing, with two horses abreast and one man, instead of three or four horses in a team and two men, &c. These improvements do not add to the productiveness of the land, but they are equally calculated with the former to counteract the tendency in the cost of production of agricultural produce, to rise with the progress of population and demand.

Analogous in effect to this second class of agricultural improvements, are improved means of communication. Good roads are equivalent to good tools. It is of no consequence whether the economy of labour takes place in extracting the produce from the soil, or in conveying it to the place where it is to be consumed. Not to say in addition, that the labour of cultivation itself is diminished by whatever lessens the cost of bringing manure from a distance, or facilitates the many operations of transport from place to place which occur within the bounds of the farm. Railways and canals are virtually a diminution of the cost of production of all things sent to market by them; and literally so of all those, the appliances and aids for producing which, they serve to transmit. By their means land can be cultivated, which would not otherwise have remunerated the cultivators without a rise of price. Improvements in navigation have, with respect to food or materials brought from beyond sea, a corresponding effect.

From similar considerations, it appears that many purely mechanical improvements, which have, apparent to least, no peculiar connexion with agriculture, nevertheless enable a given amount of food to be obtained with a smaller expenditure of labour. A great improvement in the process of smelting iron, would tend to cheapen agricultural implements, diminish the cost of railroads, of waggons and carts, ships, and perhaps buildings, and many other things to which iron is not at present applied, because it is too costly; and would thence diminish the cost of production of food. The same effect would follow from an improvement in those processes of what may be termed manufacture, to which the material of food is subjected after it is separated from the ground. The first application of wind or water power to grind corn, tended to cheapen bread as much as a very important discovery in agriculture would have done; and any great improvement in the construction of corn-mills, would have, in proportion, a similar influence. The effects of cheapening locomotion have been already considered. There are also engineering inventions which facilitate all great operations on the earth's surface. An improvement in the art of taking levels is of importance to draining, not to mention canal and railway making. The fens of Holland, and of some parts of England, are drained by pumps worked by the wind or by steam. Where canals of irrigation, or where tanks or embankments are necessary, mechanical skill is a great resource for cheapening production.

Those manufacturing improvements which cannot be made instrumental to facilitate, in any of its stages, the actual production of food, and therefore do not help to counteract or retard the diminution of the proportional return to labour from the soil, have, however, another effect, which is practically equivaleật. What they do not prevent, they yet, in some degree, compensate for.

The materials of manufactures being all drawn from the land, and many of them from agriculture, which supplies in particular the entire material of clothing; the general law of production from the land, the law of diminishing return, must in the last resort be applicable to manufacturing as well as to agricultural history. As population increases, and the power of the land to yield increased produce is strained harder and harder, any additional supply of material, as well as of food, must be obtained by a more than proportionally increasing expenditure of labour. But the cost of the material forming generally a very small portion of the entire cost of the manufacture, the agricultural labour concerned in the production of manufactured goods is but a small fraction of the whole labour worked up in the commodity. All the rest of the labour tends constantly

[ocr errors][ocr errors][merged small][merged small][ocr errors][merged small][merged small][ocr errors][merged small][ocr errors][ocr errors][merged small]

and strongly towards diminution, as the amount of production increases. Manufactures are vastly more susceptible than agriculture, of mechanical improvements, and contrivances for saving labour; and it has already been seen how greatly the division of labour, and its skilful and economical distribution, depend on the extent of the market, and on the possibility of production in large masses. In manufactures, accordingly, the causes tending to increase the productiveness of industry, preponderate greatly over the one cause which tends to diminish it: and the increase of production, called forth by the progress of society, takes place, not at an increasing, but at a continually diminishing, proportional cost. This fact has manifested itself in the progressive fall of the prices and values of almost every kind of manufactured goods during two centuries past; a fall accelerated by the mechanical inventions of the last seventy or eighty years, and susceptible of being prolonged and extended beyond any limit which it would be safe to specify.

Now it is quite conceivable that the efficiency of agricultural labour might be undergoing, with the increase of produce, a gradual diminution ; that the price of food, in consequence, might be progressively rising, and an ever growing proportion of the population might be needed to raise food for the whole; while yet the productive power of labour in all other branches of industry might be so rapidly augmenting, that the required amount of labour could be spared from manufactures, and nevertheless a greater pro: duce be obtained, and the aggregate wants of the community be on the whole better supplied, than before. The benefit might even extend to the poorest class. The increased cheapness of clothing and lodging might make up to them for the augmented cost of their food.

There is, thus, no possible improvement in the arts of production which does not in one or another mode exercise an antagonistic influence to the law of diminishing return to agricultural labour. Nor is it only industrial improvements

« НазадПродовжити »