The progress of machinery has called into existence a great number of factories, especially in worsted and mixed stuffs, has given value to many descriptions of wool formerly valueless, and, coupled with the repeal of the duty, brought into the market many kinds unknown a few years ago. "Properties once prized," Mr. Southey remarks in his Essay on Wools, "have given way to some other property upon which machinery can better operate, and yield more desirable results. Spanish wool, once deemed indispensable, is now little sought after. It is supplanted by our colonial wool, which is steadily advancing in quality and quantity, while angora goat, and alpaca wools are forcing their way into and enhancing the value of our stuff trade." . . . "Machinery has marshalled before its tremendous power the wool of every country, selected and adopted the special qualities of each. Nothing, in fact, is now rejected. Even the burr, existing in myriads in South America and some other descriptions of wool, at one time so perplexing to our manufacturers, can now, through the aid of machinery, be extracted, without very material injury to the fibre." . . . "In no description of manufacture connected with the woollen trade has machinery been more fertile in improvements than in what may be termed the worsted stuff trade." "The power-looms employed, in the West Riding of Yorkshire, in the worsted stuff trade, increased from 2,763 in 1836, to 19,121 in 1845 (and are probably not far from 28,000 at the present time). Worsted goods formerly consisted chiefly of bombazets, shalloons, calamancoes, lastings for ladies' boots, and taminies. Now the articles in the fancy trade may be said to be numberless, and to display great artistic beauty. These articles, made with alpaca, Saxony, fine English and Colonial wools, and of goats' hair for weft, with fine cotton for warp, consist of merinoes, Orleans, plain and figured Parisians, Paramattas, and alpaca figures, checks, etc." The machines for combing and carding, of the most improved make, will work wool of one and a half inch in the staple, while for the old process of hand- combing four inches was the minimum. But we must not enter further into these details, as it is our purpose rather to indicate the interest and importance of certain manufactures than to describe the process minutely.