The river Nerbudda neither is nor ever can, I fear, be made navigable, and the produce of its valley would require to find its way to distant markets over the Vindhya range of hills to the north, or the Sâtpura to the south. If the produce of the soil, mines, and industry of the valley cannot be transported to distant markets, the Government cannot possibly find in it any available net surplus revenue in money; for it has no mines of the precious metals, and the precious metals can flow in only in exchange for the produce of the land, and the industry of the valley that flows out. If the Government wishes to draw a net surplus revenue from the valley or from the districts that border upon it, that is, a revenue beyond its expenditure in support of the local public establishments, it must either draw it in produce, or for what can be got for that produce in distant markets.[5] Hitherto little beyond the rude produce of the soil has been able to find its way into distant markets from the valley of the Nerbudda; yet this valley abounds in iron mines,[6] and its soil, where unexhausted by cropping, is of the richest quality.[7] It is not then too much to hope that in time the iron of the mines will be worked with machinery for manufactures; and that multitudes, aided by this machinery, and subsisted on the rude agricultural produce, which now flows out, will invest the value of their labour in manufactured commodities adapted to the demand of foreign markets and better able from their superior value, compared with their bulk, to pay the cost of transport by land. Then, and not till then, can we expect to see these territories pay a considerable net surplus revenue to Government, and abound in a middle class of merchants, manufacturers, and agricultural capitalists.[8]