These are navigable a considerable way, and receive several other navigable rivers into them; but except these there are very few rivers in England which are navigable much above the first town of note within their mouth.
Most of our other greatest and most navigable rivers are navigable but a very little way in; as the northern Ouse but to York, the Orwell but to Ipswich, the Yare but to Norwich; the Tyne itself but a very little above Newcastle, not in all above twelve miles; the Tweed not at all above Berwick; the great Avon but to Bristol; the Exe but to Exeter; and the Dee but to Chester: in a word, our river-navigation is not to be named for carriage, with the vast bulk of carriage by pack-horses and by waggons; nor must the carriage by pedlars on their backs be omitted.[40] This carriage is the medium of our inland trade, and, as I said, is a branch of the trade itself.

This great carriage is occasioned by the situation of our produce and manufactures.

For example--the Taunton and Exeter serges, perpetuanas, and duroys, come chiefly by land; the clothing, such as the broad-cloth and druggets from Wilts, Gloucester, Worcester, and Shropshire, comes all by land-carriage to London, and goes down again by land-carriages to all parts of England; the Yorkshire clothing trade, the Manchester and Coventry trades, all by land, not to London only, but to all parts of England, by horse-packs--the Manchester men being, saving their wealth, a kind of pedlars, who carry their goods themselves to the country shopkeepers every where, as do now the Yorkshire and Coventry manufacturers also.
Now, in all these manufactures, however remote from one another, every town in England uses something, not only of one or other, but of all the rest.

Every sort of goods is wanted every where; and where they make one sort of goods, and sell them all over England, they at the same time want other goods from almost every other part.

For example: Norwich makes chiefly woollen stuffs and camblets, and these are sold all over England; but then Norwich buys broad-cloth from Wilts and Worcestershire, serges and sagathies from Devon and Somersetshire, narrow cloth from Yorkshire, flannel from Wales, coal from Newcastle, and the like; and so it is, _mutatis mutandis_, of most of the other parts.
The circulating of these goods in this manner, is the life of our inland trade, and increases the numbers of our people, by keeping them employed at home; and, indeed, of late they are prodigiously multiplied; and they again increase our trade, as shall be mentioned in its place.
As the demand for all sorts of English goods is thus great, and they are thus extended in every part of the island, so the tradesmen are dispersed and spread over every part also; that is to say, in every town, great or little, we find shopkeepers, wholesale or retail, who are concerned in this circulation, and hand forward the goods to the last consumer.