We have had frequent evidences, in preceding chapters, of the large influence of the clergy in the temporal affairs of New England. The ranks of the Puritan ministry contained men of the best ability and station; they were pre-eminently the strongest class, and as the popular leaders, deeply impressed their character upon the laws and institutions of the community. They were held in great affection and reverence; but in a body of sturdy, intelligent parishioners they could maintain their supremacy only by the exercise of superior mental gifts: their calling was one offering rich rewards for excellence, and attracted to it men of the finest calibre, like the Mathers and Hooker. The sloth or the dullard was soon taught by his people that he had mistaken his calling. Jonathan Edwards, although of a later period than that of which we are treating, was a fair type, and his early resolution "to live with all my might while I do live," was an expression of the spirit which dominated his order. Sidenote: Medicine. It was an age in which quackery flourished. The regular physicians, though excellent men and highly regarded by the people, depended upon nostrums, and had little medical knowledge; they were in the main "herb-doctors" and "blood-letters." Many of the practitioners were barbers, and others clergymen. "This relation between medicine and theology," writes Dr. Holmes, "has existed from a very early period; from the Egyptian priest to the Indian medicine-man, the alliance has been maintained in one form or another. The partnership was very common among our British ancestors." There were few facilities for the study of medicine in the colonies until after the Revolution. The first medical school in America was established in Philadelphia, about 1760. 77. Occupations. Sidenote: Domestic manufactures. Unlike the Southern colonists, New Englanders were dependent on England only for the most important manufactures. Mechanics were sufficiently numerous in every community. The lumber industry was important, and in Connecticut and Massachusetts there was profitable iron mining, which gave rise to several kindred pursuits. There being abundant water-power, small saw and grist mills were numerous; there were many tanneries and distilleries; the Scotch-Irish in Massachusetts and New Hampshire made linens and coarse woollens, and beaver hats and paper were manufactured on a small scale. The people were largely dressed in homespun cloth, and a spinning-wheel was to be found in every farm-house. It was not until after the Revolution, however, that New England manufacturing interests attained much magnitude; the home government, through the Acts of Navigation and Trade (page 104, § 44), had discouraged, as far as possible, American efforts in this direction. Sidenote: Fisheries.