Now there is no supposition but one, relating to the value of money in different countries, which, combined with the natural elements of the value of produce in each, would constitute the present natural prices of commodities in these countries, or the rates at which they actually exchange with each other. This is the supposition that the differences in the value of money in different countries are proportioned to the differences in the money prices of agricultural labour.[E] The conditions of the supply of an Indian commodity are the advance and consumption of a certain quantity of Indian labour, with the profits on all the advances for the time that they are employed. Thus, if for the production of an Indian commodity, a fixed capital consisting of accumulated labour and profits, equal to 300 days, were advanced for a year, and a quantity of accumulated and immediate labour, consisting of the wear and tear of the machinery, the materials to be worked up, and direct labour, equal to 1500 days, were consumed on the commodity in the same time, profits being 20 per cent., the natural value of such commodity in India would be equal to the 1500 days labour consumed, with a profit of 20 per cent. upon 1800 days labour, which would amount to 1860 days labour. If labour in India were fourpence a day, the fixed money capital in this case would equal £5, the labour advanced and consumed £25, and the labour consumed, together with the profits on the whole advances, would be equal to £31. And this would evidently be the natural price at which the commodity would circulate, and according to which it would exchange with any foreign commodity brought to India.