The tool-making animal, having obtained this marvellous means of multiplying, or rather treasuring and applying, mechanical force, went on at least some thousands of years before waking up to its grand significance. Among the nations that first obtained excellence in textile fabrics, very little use has ever been made of the wheel. The spinning-girl of Dacca, who twists, and for ages has twisted, a pound of cotton into a thread two hundred and fifty miles long, beating Manchester by ninety miles, has no wheel, unless you so call a ball of clay, of the size of a pea, stuck fast on one end of her spindle, by means of which she twists it between her thumb and finger. But this wonderful mechanical feat costs her many months of labor, to say nothing of previous training; while the Manchester factory-girl, aided by the multiplying power of the wheel, easily makes as much yarn, though not quite so fine, in a day. If it were an object to rival the tenuity of the finest India muslin, machinery could easily accomplish it. But that spider-web fabric is carried so nearly to transparency, that the Emperor Aurengzebe is said to have reproved his daughter for the indelicacy of her costume while she wore seven thicknesses of it. She might have worn twelve hundred yards without burdening herself with more than a pound weight; what she did wear did not, probably, weigh two ounces. The Chinese and Japanese have spinning-wheels hardly equal to those brought over by our pilgrim fathers in the Mayflower. But they have also, what Western civilization has not, praying-wheels. In Japan the praying-wheel is turned by hand; but in China, according to Hue, it is sometimes carried by water-power, and rises to the dignity of a mill. The Japanese, however, have mills for hulling rice, turned by very respectable water-wheels. The Egyptians and Greeks had water-wheels, and in fact understood all the mechanical powers. Archimedes, all the world knows, astounded the Romans by mechanical combinations which showered rocks on the besiegers of Syracuse, and boasted he could make a projectile of the world itself, if he could only find a standing-place outside of it.