Note 4 — MEMOIRS OF Dr. JOSEPH PRIESTLEY. [WRITTEN BY HIMSELF.]

It is about sixty miles from Needham to London, so that the roads must have been in a bad state to render a water passage more eligible than by land. The first turnpike in England was authorized by an act of Ch. II. 1663 but the system was not adopted with spirit until near the middle of the last century. The manufacturing inland towns of Great Britain, such as Manchester, Leeds, Halifax, &c. chiefly carried on their business through the medium of travelling pedlars, and afterwards on pack horses. The journey in this manner from Manchester to London occupied a fortnight; and it was not unusual for a trader going the first time himself on this expedition to take the prudent precaution of making his will. At present the mail stage performs the journey in about a day and a half. In the beginning of this century (as Dr. Aikin in his history of Manchester observes) it was thought a most arduous undertaking to make a public road over the hills that separate Yorkshire and Lancashire; now, they are pierced by three navigable canals. Indeed the prosperous state of British manufactures and commerce, seems to have originated and progressed with the adoption of turnpikes and canals. They facilitate not merely the carriage and interchange of heavy materials necessary to machinery, but they make personal intercourse cheap, speedy and universal; they thus furnish the means of seeing and communicating improvements, and of observing in what way one manufacture may be brought to bear upon another widely different in its kind. We are not yet sufficiently aware of their importance in America, even to the interests of agriculture.

T. C.