CHAPTER IV.
OF THE TRADESMAN ACQUAINTING HIMSELF WITH ALL BUSINESS IN GENERAL It is the judgment of some experienced tradesmen, that no man ought to go from one business to another, and launch out of the trade or employment he was bred to: _Tractent fabrilia fabri_--'Every man to his own business;' and, they tell us, men never thrive when they do so.
I will not enter into that dispute here.

I know some good and encouraging examples of the contrary, and which stand as remarkable instances, or as exceptions to the general rule: but let that be as it will, sometimes providence eminently calls upon men out of one employ into another, out of a shop into a warehouse, out of a warehouse into a shop, out of a single hand into a partnership, and the like; and they trade one time here, another time there, and with very good success too.
But I say, be that as it will, a tradesman ought so far to acquaint himself with business, that he should not be at a loss to turn his hand to this or that trade, as occasion presents, whether in or out of the way of his ordinary dealing, as we have often seen done in London and other places, and sometimes with good success.
This acquainting himself with business does not intimate that he should learn every trade, or enter into the mystery of every employment.

That cannot well be; but that he should have a true notion of business in general, and a knowledge how and in what manner it is carried on; that he should know where every manufacture is made, and how bought at first hand; that he should know which are the proper markets, and what the particular kinds of goods to exchange at those markets; that he should know the manner how every manufacture is managed, and the method of their sale.
It cannot be expected that he should have judgment in the choice of all kinds of goods, though in a great many he may have judgment too: but there is a general understanding in trade, which every tradesman both may and ought to arrive to; and this perfectly qualifies him to engage in any new undertaking, and to embark with other persons better qualified than himself in any new trade, which he was not in before; in which, though he may not have a particular knowledge and judgment in the goods they are to deal in or to make, yet, having the benefit of the knowledge his new partner is master of, and being himself apt to take in all additional lights, he soon becomes experienced, and the knowledge of all the other parts of business qualifies him to be a sufficient partner.

For example--A.B.

was bred a dry-salter, and he goes in partner with with C.D., a scarlet-dyer, called a bow-dyer, at Wandsworth.
As a salter, A.B.has had experience enough in the materials for dyeing, as well scarlets as all other colours, and understands very well the buying of cochineal, indigo, galls, shumach, logwood, fustick, madder, and the like; so that he does his part very well.