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INTRODUCTION.
I NOW offer to the public a short essay, accom|panied with two explanatory prints, in which I shall endeavour to shew what the principles are in nature, by which we are directed to call the forms of some bodies beautiful, others ugly; some graceful, and others the reverse; by considering more minutely than has hitherto been done, the nature of those lines, and their different combinations, which serve to raise in the mind the ideas of all the variety of forms imagina|ble. At first, perhaps, the whole design, as well as the prints, may seem rather intended to trifle and con|found, than to entertain and inform: but I am per|suaded that when the examples in nature, referr'd to in this essay, are duly consider'd and examined upon the principles laid down in it, it will be thought worthy of a careful and attentive perusal: and the prints themselves too will, I make no doubt, be examined as attentively, when it is found, that almost every figure in them (how odly soever they may seem to be group'd together) is referr'd to singly in the essay, in order to assist the