The title of this work is an index of the performance. It is a collection of useful instructions for a young tradesman. The world is grown so wise of late, or (if you will) fancy themselves so, are so opiniatre, as the French well express it, so self-wise, that I expect some will tell us beforehand they know every thing already, and want none of my instructions; and to such, indeed, these instructions are not written. Had I not, in a few years' experience, seen many young tradesmen miscarry, for want of those very cautions which are here given, I should have thought this work needless, and I am sure had never gone about to write it; but as the contrary is manifest, I thought, and think still, the world greatly wanted it.