The history of various articles of diet and medicine, will amply prove how much their reputation and fate have depended upon authority. For instance, it was not until many years after ipecacuanha had been imported into England, that Helvetius, under the patronage of Louis XIV. succeeded in introducing it into practice: and to the praise of Katherine, queen of Charles II. we are indebted for the general introduction of tea into England. Tobacco, notwithstanding its fascinating powers, has suffered romantic vicissitudes in its fame and character; it has been successively opposed and commended by physicians, condemned and eulogized by priests and kings[18], and proscribed and protected by governments, whilst, at length, this once insignificant production of a little island, or an obscure district, has succeeded in diffusing itself through every climate, and in subjecting the inhabitants of every country to its dominion. The Arab cultivates it in the burning desert;—the Laplander and Esquimaux risk their lives to procure a refreshment so delicious in their wintry solitude;—the seaman, grant him but this luxury, and he will endure with cheerfulness every other privation, and defy the fury of the raging elements;—and, in the higher walk of civilized society, at the shrine of fashion, in the palace and in the cottage, the fascinating influence of this singular plant, commands an equal tribute of devotion and attachment. Nor is the history of the potatoe less extraordinary or less strikingly illustrative of the imperious influence of authority. In fact, the introduction of this valuable plant received, for more than two centuries, an unprecedented opposition from vulgar prejudice, which all the philosophy of the age was unable to dissipate, until Louis XV. wore a bunch of the flowers of the potatoe in the midst of his court, on a day of mirth and festivity. The people then, for the first time, obsequiously acknowledged its utility, and began to express their astonishment at the apathy which had so long prevailed with regard to its general cultivation. The history of the warm bath furnishes us with another curious instance of the vicissitudes to which the reputation of our valuable resources are so uniformly exposed. That, in short, which for so many ages was esteemed the greatest luxury in health, and the most efficacious remedy in disease, fell into total disrepute in the reign of Augustus, for no other reason than because Antonius Musa had cured the emperor of a dangerous malady by the use of the cold bath. The coldest water, therefore, was recommended on every occasion. This practice, however, was but of short duration. The popularity of the warm bath soon lost all its premature and precocious popularity; for, though it had restored the emperor to health, it shortly afterwards killed his nephew and son-in-law Marcellus; an event which at once deprived the remedy of its credit, and the physician of his popularity.[19]