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 still less degree of alteration in the nature and appearance of the object, to a change so total that no trace is perceptible of the original shape and structure. There is little resemblance between a piece of a mineral substance found in the earth, and a plough, an axe, or a saw. There is less resemblance between porcelain and the decomposing granite of which it is made, or between sand mixed with sea-weed, and glass. The difference is greater still between the fleece of a sheep, or a handful of cotton seeds, and a web of muslin or broad cloth; and the sheep and seeds themselves are not spontaneous growths, but results of previous labour and care. In these several cases the ultimate product is so extremely dissimilar to the substance supplied by nature, that in the custom of language nature is represented as only furnishing materials.
Nature, however, does more than supply materials; she also supplies powers. The matter of the globe is not an inert recipient of forms and properties impressed by human hands; it has active energies by which it co-operates with, and may even be used as a substitute for, labour. In the early ages people converted their corn into flour by pounding it between two stones; they next hit on a contrivance which enabled them, by turning a handle, to make one of the stones revolve upon the other; and this process, a little improved
