The Romans seem to have followed the Greeks, in this passion for dancing; and the theatrical dances, upon the pantomime plan, were in Rome pushed to such a degree of perfection as is even hard to conceive. Whole tragedies plaid, act by act, scene by scene, in pantomime expression, give an idea of this art, very different from that which is at present commonly received. Every step in dancing has its name and value. But not one should be employed in a vague unmeaning manner. All the movements should be conformable to the expression required, and in harmony with one another. The steps regular, and properly varied, with a graceful suppleness in the limbs, a certain strength, address, and agility; just positions exhibited with ease, delicacy, and above all, with propriety, caracterise the masterly dancer, and in their union, give to his execution its due beauty. The least negligence, in any of these points, is immediately felt, and detracts from the merit of the performance. Every step or motion that is not natural, or has any thing of stiffness, constraint, or affectation, is instinctively perceived by the spectator. The body must constantly preserve its proper position, without the least contortion, well adjusted to the steps; while the motion of the arms, must be agreeable to that of the legs, and the head to be in concert with the whole. But in this observation I pretend to no more than just furnishing a general idea of the requisites towards the execution: the particulars, it is impossible, to give in verbal description, or even by choregraphy or dances in score. Many who pretend to understand the art of dancing, confound motions of strength, with those of agility, mistaking strength for slight, or slight for strength; tho' so different in their nature. It is the spring of the body, in harmony with sense, that gives the great power to please and surprize. The same it is with the management of the arms; but all this requires both the theory of the art, and the practice of it. One will hardly suffice without the other; which makes excellence in it so rare. The motion of the arms is as essential, at least, as that of the legs, for an expressive attitude: and both receive their justness from the nature of the passions they are meant to express. The passions are the springs which must actuate the machine, while a close observation of nature furnishes the art of giving to those motions the grace of ease and expertness. Any thing that, on the stage especially, has the air of being forced, or improper, cannot fail of having a bad effect. A frivolous, affected turn of the wrist, is surely no grace.