In modern days the comb probably reached its most costly and ornamental state at the court of Louis XIV., where hair-dressing was an art more appreciated and often better paid than the higher efforts of genius. Combs of ivory and of tortoise-shell, richly inlaid with gold and pearl, formed an essential adjunct of the toilet of the court beauties. In Great Britain the fabrication of horn into combs was a very ancient process, chiefly in Yorkshire and the midland counties. But towards the end of the last century the increased demand for combs caused makers to establish themselves all over the country; and in Scotland there were one or two houses of some eminence in the trade at the period--some twenty-five years back--at which we have now arrived. It was, however, one of those trades that, as its artificers were concerned, would not stand investigation. Making combs on nearly the same principles as those pursued by their forefathers--that is, by simply cutting out the interspace between the teeth, with various sorts and sizes of saws--its followers, barely entitled to the name of skilled workmen, were dissipated, unsettled, and irregular in their habits. We come now to treat of the grand era in the comb trade--of the time when it was destined, like the great staple manufactures of our country, to undergo a revolution. The introduction of machinery and steam-power, with the division of labor, is suggestive of an important stride in the progress of the trade. About the year 1828 Mr. Lynn invented a machine of a singularly ingenious design, having for its principal object that of cutting two combs out of one plate of horn or shell; and two years afterwards Stewart, Rowell & Co. commenced the manufacture in Aberdeen. To the first of these circumstances the trade was indebted for the successful idea of a machine, which affected at the same time a saving of half the material, and an increase of produce almost inconceivable. To the latter it is still more indebted for the first application of steam-power to the machinery; and, what we think of infinitely greater importance, the introduction of those true principles in the philosophy of production contended for by Adam Smith--a philosophy which, in its legitimate application, has the invariable effect of elevating alike the character of the produce and the producers.