The Principles of Political Economy

tion are two: labour, and a

ing them. In all but these few and (except in the very commencement of human society) unimportant cases, the objects supplied by nature are only instrumental to human wants, after having undergone some degree of transformation by human exertion. Even the wild animals of the forest and of the sea, from which the hunting and fishing tribes derive their sustenance — though the labour of which they are the subject is chiefly that required for appropriating them — must yet, before they are used as food, be killed, divided into fragments, and subjected in almost all cases to some culinary process, which are operations requiring a certain degree of human labour. The amount of transformation which natural substances undergo before being brought into the shape in which they are directly applied to human use, varies from this or a st

ce which enabled them, by turning a handle, to make one of the stones revolve upon the other; and this process, a little improved, is still the common practice of the East. The muscular exertion, however, which it required, was very severe and exhausting, insomuch that it was often selected as a punishment for slaves who had offended their masters. When the time came at which the labour and suffe

s actively operative in the one case as in the other. A workman takes a stalk of the flax or hemp plant, splits it into separate fibres, twines together several of these fibres with his fingers, aided by a simple instrument called a spindle; having thus formed a thread, he lays many such threads side by side, and places other similar threads directly across them, so that each passes alternately over and under those which are at right angles to it; this part of the process being facilitated by an instrument called a shuttle. He has

r manner, and the physical properties by which a softer substance gives way before a harder, make it separate into planks, which he arranges in certain positions, with nails driven through them, or adhesive matter between them, and produces a table, or a house. He moves a spark to fuel, and it ignites, and by the force generated in combustion it cooks the food, melts or softens the iron, converts into beer or sugar the malt or cane-juice, which he has previously moved to the spot. He has no other means of acting on matter than by moving it. Motion, and resistance to motion, are the only things which his muscles are constructed for. By muscular contraction he can create a pressure on an outward object, which, if sufficiently powerful, will

directly produce by his muscles, it is not necessary that he should produce directly by them all the movements which he requires. The first and most obvious substitute is the muscular action of cattle: by degrees the powers of inanimate nature are made to aid in this too, as by making the wind, or water, things already in motion, communicate a part of their motion to the wheels, which before that inv

hen two conditions are equally necessary for producing the effect at all, it is unmeaning to say that so much of it is produced by one and so much by the other; it is like attempting to decide which half of a pair of scissors has most to do in the act of cutting; or which of the factors, five and six, contributes most to the production of thirty. The form which this conceit usually assumes, is that of supposing that nature lends more assistance to human endeavours in agriculture, than in manufactures. This notion, held by the French Economistes, and from which Adam Smith was not free, arose from a misconception of the

ordinary purposes, on the banks of rivers or lakes, may be regarded as of unlimited abundance; but if required for irrigation, it may even there be insufficient to supply all wants, while in places which depend for their consumption on cisterns or tanks, or on wells which are not copious, or are liable to fail, water takes its place among things the quantity of which is most strictly limited. Where water itself is plentiful, yet waterpower, i.e. a fall of water applicable by its mechanical force to the service of industry, may be exceedingly limited, compared with the use which would be made of it if it were more abundant. Coal, metallic ores, and other useful substances found in the earth, are still more limited than land. They are not only strictly local but exhaustible; though, at a given place and time, they may exist in much greater abundance than would be applied to present use even if they could be o

soon as a limitation becomes practically operative; as soon as there is not so much of the thing to be had, as would be appropriated and used if it could be obtained for asking; the ownership or use of the natural agent acquires an exchangeable value. When more water power is wanted in a particular district, than there are falls of water to supply it, persons will give an equivalent for the use of a fall of water. When there is more land w