Those occupations which were of the most absolute necessity to the support of existence, were, doubtless, the earliest, and, in the infancy of society, the sole employments that engaged attention. But when the art and industry of a few were found sufficient for the maintenance of many, property began to accumulate in the hands of individuals, and as all could no longer be engaged in the productions of the necessaries of life, those who were excluded applied their ingenuity to those arts which, by contributing to the convenience of the former, might enable them to participate in the fruits of their labour; and several of these have acquired a pre-eminence over the more useful avocations. A taste for the wonderful seems to be natural to man in every stage of society, and at almost every period of life; we, therefore, cannot wonder that, from the earliest ages, persons have been found, who, more idle or more ingenious than others, have availed themselves of this propensity, to obtain an easy livelihood by levying contributions on the curiosity of the public. Whether this taste is to be considered as a proof of the weakness of our judgment, or of innate inquisitiveness, which stimulates us to enlarge the sphere of our knowledge, must be left to the decision of metaphysicians; it is sufficient for our present purpose to know that it gave rise to a numerous class of persons, whom, whether performers of sleight of hand, rope-dancers, mountebanks, teachers of animals to perform extraordinary tricks, or, in short, who delude the senses, and practice harmless deception on spectators, we include under the common title of Jugglers. If these arts served no other purpose than that of mere amusement, they yet merit a certain degree of encouragement, as affording at once a cheap and innocent diversion: but Jugglers frequently exhibit instructive experiments in natural philosophy, chemistry, and mechanics; thus, the solar microscope was invented from an instrument to reflect shadows, with which a Savoyard amused a German populace; and the celebrated Sir Richard Arkwright is said to have conceived the idea of the spinning machines, which have so largely contributed to the prosperity of the cotton manufacture in this country, from a toy which he purchased for his child of an itinerant showman. These deceptions have, besides, acted as an agreeable and most powerful antidote to superstition, and to that popular belief in miracles, conjuration, sorcery, and witchcraft, which preyed upon the minds of our ancestors; and the effects of shadows, electricity, mirrors, and the magnet, once formidable instruments in the hands of interested persons for keeping the vulgar in awe, have been stripped of their terrors, and are no longer frightful in their most terrific forms.