If so, certainly it is in the power of a man of science, with as observing an eye, to go still further, and conceive, with a very little turn of thought, many other necessary circumstances concerning proportion, as of what size and in what manner the bones help to make up the bulk, and support the other parts; as well as what certain weights or dimensions of muscles are proper (according to the principle of the steelyard) to move such or such a length of arm with this or that degree of swiftness or force. But though much of this matter, may be easily understood by common observation, assisted by science, still I fear it will be difficult to raise a very clear idea of what constitutes, or composes the _utmost beauty of proportion_; such as is seen in the Antinous; which is allowed to be the most perfect in this respect, of any of the antique statues; and tho' the lovely likewise seems to have been as much the sculptor's aim, as in the Venus; yet a manly strength in its proportion is equally express'd from head to foot in it. [Illustration: Fig. 6] Let us try, however, and as this master-piece of art is so well known, we will set it up before us as a pattern, and endeavour to fabricate, or put together in the mind, such kind of parts as shall seem to build another figure like it. In doing which, we shall soon find that it is chiefly to be effected by means of the nice sensation we naturally have of what certain quantities or dimensions of parts, are fittest to produce the utmost strength for moving, or supporting great weights; and of what are most fit for the utmost light agility, as also for every degree, between these two extremes. He who hath best perfected his ideas of these matters by common observations, and by the assistance of arts relative thereto, will probably be most precisely just and clear, in conceiving the application of the various parts and dimensions, that will occur to him, in the following descriptive manner of disposing of them, in order to form the idea of a fine-proportion'd figure. Having set up the Antinous as our pattern, we will suppose there were placed on one side of it, the unwieldy elephant-like figure of an Atlas, made up of such thick bones and muscles, as would best fit him for supporting a vast weight, according to his character of extreme heavy strength. And, on the other side, imagine the slim figure of a Mercury, every where neatly formed for the utmost light agility, with slender bones and taper muscles fit for his nimble bounding from the ground.--Both these figures must be supposed of equal height, and not exceeding six foot[8]. [8] If the scale of either of these proportions were to exceed six foot in the life, the quality of strength in one, and agility in the other, would gradually decrease, the larger the person grew. There are sufficient proofs of this, both from mechanical reasonings and common observation.